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*** Evolution of Command Line options of different C++ compilers ***
[ Abstract ]
Technical details on Evolution of Command Line options of different C++ compilers, more than 10, will be provided.
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MinGW v6.1.0 64-bit Options - Group 6
-ansi A synonym for -std=c89 (for C) or -std=c++98 (for
C++).
-d Enable dumps from specific passes of the compiler.
-fRTS= Select the runtime.
-fabi-compat-version= The version of the C++ ABI used for -Wabi
warnings and link compatibility aliases.
-faccess-control Enforce class member access control semantics.
-fada-spec-parent= -fada-spec-parent=unit Dump Ada specs as child
units of given parent.
-fall-virtual This option lacks documentation. Uses of this
option are diagnosed.
-fallow-parameterless-variadic-functions Allow variadic functions without
named parameter.
-falt-external-templates No longer supported. Uses of this option are
diagnosed.
-fasm Recognize the "asm" keyword.
-fbuilding-libgcc This option lacks documentation.
-fbuiltin Recognize built-in functions.
-fbuiltin- This option lacks documentation.
-fcanonical-system-headers Where shorter, use canonicalized paths to systems
headers.
-fcheck-pointer-bounds Add Pointer Bounds Checker instrumentation.
fchkp-* flags are used to control
instrumentation. Currently available for C, C++
and ObjC.
-fchkp-check-incomplete-type Generate pointer bounds checks for variables
with incomplete type.
-fchkp-check-read Generate checks for all read accesses to memory.
-fchkp-check-write Generate checks for all write accesses to memory.
-fchkp-first-field-has-own-bounds Forces Pointer Bounds Checker to use
narrowed bounds for address of the first field in
the structure. By default pointer to the first
field has the same bounds as pointer to the whole
structure.
-fchkp-instrument-calls Generate bounds passing for calls.
-fchkp-instrument-marked-only Instrument only functions marked with
bnd_instrument attribute.
-fchkp-narrow-bounds Control how Pointer Bounds Checker handle
pointers to object fields. When narrowing is on,
field bounds are used. Otherwise full object
bounds are used.
-fchkp-narrow-to-innermost-array Forces Pointer Bounds Checker to use bounds
of the innermost arrays in case of nested static
arryas access. By default outermost array is
used.
-fchkp-optimize Allow Pointer Bounds Checker optimizations. By
default allowed on optimization levels >0.
-fchkp-store-bounds Generate bounds stores for pointer writes.
-fchkp-treat-zero-dynamic-size-as-infinite With this option zero size
obtained dynamically for objects with incomplete
type will be treated as infinite.
-fchkp-use-fast-string-functions Allow to use *_nobnd versions of string
functions by Pointer Bounds Checker.
-fchkp-use-nochk-string-functions Allow to use *_nochk versions of string
functions by Pointer Bounds Checker.
-fchkp-use-static-bounds Use statically initialized variable for vars
bounds instead of generating them each time it is
required.
-fchkp-use-static-const-bounds Use statically initialized variable for
constant bounds instead of generating them each
time it is required.
-fchkp-use-wrappers Transform instrumented builtin calls into calls
to wrappers.
-fchkp-zero-input-bounds-for-main Use zero bounds for all incoming arguments
in 'main' function. It helps when instrumented
binaries are used with legacy libs.
-fcilkplus Enable Cilk Plus.
-fconcepts Enable support for C++ concepts.
-fcond-mismatch Allow the arguments of the '?' operator to have
different types.
-fconserve-space Does nothing. Preserved for backward
compatibility.
-fconst-string-class= Use class for constant strings.
-fconstexpr-depth= Specify maximum constexpr recursion depth.
-fdebug-cpp Emit debug annotations during preprocessing.
-fdeclone-ctor-dtor Factor complex constructors and destructors to
favor space over speed.
-fdeduce-init-list enable deduction of std::initializer_list for a
template type parameter from a brace-enclosed
initializer-list.
-fdefault-inline Does nothing. Preserved for backward
compatibility.
-fdirectives-only Preprocess directives only.
-fdollars-in-identifiers Permit '$' as an identifier character.
-fdump-ada-spec Write all declarations as Ada code transitively.
-fdump-ada-spec-slim Write all declarations as Ada code for the given
file only.
-felide-constructors This option lacks documentation.
-femit-struct-debug-baseonly Aggressive reduced debug info for structs.
-femit-struct-debug-detailed= Detailed reduced debug info for
structs.
-femit-struct-debug-reduced Conservative reduced debug info for structs.
-fenforce-eh-specs Generate code to check exception specifications.
-fenum-int-equiv This option lacks documentation. Uses of this
option are diagnosed.
-fexec-charset= Convert all strings and character constants to
character set .
-fext-numeric-literals Interpret imaginary, fixed-point, or other gnu
number suffix as the corresponding number literal
rather than a user-defined number literal.
-fextended-identifiers Permit universal character names (\u and \U) in
identifiers.
-fextern-tls-init Support dynamic initialization of thread-local
variables in a different translation unit.
-fexternal-templates This option lacks documentation. Uses of this
option are diagnosed.
-ffor-scope Scope of for-init-statement variables is local to
the loop.
-ffreestanding Do not assume that standard C libraries and
"main" exist.
-ffriend-injection Inject friend functions into enclosing namespace.
-fgnu-keywords Recognize GNU-defined keywords.
-fgnu-runtime Generate code for GNU runtime environment.
-fgnu89-inline Use traditional GNU semantics for inline
functions.
-fguiding-decls This option lacks documentation. Uses of this
option are diagnosed.
-fhandle-exceptions Same as -fexceptions. Use the latter option
instead. Uses of this option are diagnosed.
-fhonor-std This option lacks documentation. Uses of this
option are diagnosed.
-fhosted Assume normal C execution environment.
-fhuge-objects No longer supported. Uses of this option are
diagnosed.
-fimplement-inlines Export functions even if they can be inlined.
-fimplicit-inline-templates Emit implicit instantiations of inline templates.
-fimplicit-templates Emit implicit instantiations of templates.
-finput-charset= Specify the default character set for source
files.
-fvisibility=[private|protected|public|package] Set the default symbol
visibility.
-fkeep-inline-dllexport Don't emit dllexported inline functions unless
needed.
-flabels-ok This option lacks documentation. Uses of this
option are diagnosed.
-flax-vector-conversions Allow implicit conversions between vectors with
differing numbers of subparts and/or differing
element types.
-flocal-ivars Allow access to instance variables as if they
were local declarations within instance method
implementations.
-fms-extensions Don't warn about uses of Microsoft extensions.
-fmudflap This option lacks documentation. Uses of this
option are diagnosed.
-fmudflapir This option lacks documentation. Uses of this
option are diagnosed.
-fmudflapth This option lacks documentation. Uses of this
option are diagnosed.
-fname-mangling-version- This option lacks documentation. Uses of this
option are diagnosed.
-fnew-abi This option lacks documentation. Uses of this
option are diagnosed.
-fnext-runtime Generate code for NeXT (Apple Mac OS X) runtime
environment.
-fnil-receivers Assume that receivers of Objective-C messages may
be nil.
-fnonansi-builtins This option lacks documentation.
-fnonnull-objects This option lacks documentation. Uses of this
option are diagnosed.
-fnothrow-opt Treat a throw() exception specification as
noexcept to improve code size.
-fobjc-abi-version= Specify which ABI to use for Objective-C family
code and meta-data generation.
-fobjc-direct-dispatch Allow fast jumps to the message dispatcher.
-fobjc-exceptions Enable Objective-C exception and synchronization
syntax.
-fobjc-gc Enable garbage collection (GC) in Objective-C/
Objective-C++ programs.
-fobjc-nilcheck Enable inline checks for nil receivers with the
NeXT runtime and ABI version 2.
-fobjc-sjlj-exceptions Enable Objective-C setjmp exception handling
runtime.
-fobjc-std=objc1 Conform to the Objective-C 1.0 language as
implemented in GCC 4.0.
-fopenacc Enable OpenACC.
-fopenacc-dim= Specify default OpenACC compute dimensions.
-fopenmp Enable OpenMP (implies -frecursive in Fortran).
-fopenmp-simd Enable OpenMP's SIMD directives.
-foperator-names Recognize C++ keywords like "compl" and "xor".
-foptional-diags Does nothing. Preserved for backward
compatibility.
-fpch-deps This option lacks documentation.
-fpch-preprocess Look for and use PCH files even when
preprocessing.
-fpermissive Downgrade conformance errors to warnings.
-fplan9-extensions Enable Plan 9 language extensions.
-fpreprocessed Treat the input file as already preprocessed.
-fpretty-templates -fno-pretty-templates Do not pretty-print
template specializations as the template
signature followed by the arguments.
-freplace-objc-classes Used in Fix-and-Continue mode to indicate that
object files may be swapped in at runtime.
-frepo Enable automatic template instantiation.
-frtti Generate run time type descriptor information.
-fshort-enums Use the narrowest integer type possible for
enumeration types.
-fshort-wchar Force the underlying type for "wchar_t" to be
"unsigned short".
-fsigned-bitfields When "signed" or "unsigned" is not given make the
bitfield signed.
-fsigned-char Make "char" signed by default.
-fsized-deallocation Enable C++14 sized deallocation support.
-fsquangle This option lacks documentation. Uses of this
option are diagnosed.
-fsso-struct=[big-endian|little-endian] Set the default scalar storage order.
-fstats Display statistics accumulated during compilation.
-fstrict-enums Assume that values of enumeration type are always
within the minimum range of that type.
-fstrict-prototype This option lacks documentation. Uses of this
option are diagnosed.
-ftabstop= Distance between tab stops for column reporting.
-ftemplate-backtrace-limit= Set the maximum number of template instantiation
notes for a single warning or error.
-ftemplate-depth- Same as -ftemplate-depth=. Use the latter option
instead.
-ftemplate-depth= Specify maximum template instantiation depth.
-fthis-is-variable This option lacks documentation. Uses of this
option are diagnosed.
-fno-threadsafe-statics Do not generate thread-safe code for initializing
local statics.
-ftrack-macro-expansion This option lacks documentation.
-ftrack-macro-expansion= -ftrack-macro-expansion=<0|1|2> Track locations
of tokens coming from macro expansion and display
them in error messages.
-funsigned-bitfields When "signed" or "unsigned" is not given make the
bitfield unsigned.
-funsigned-char Make "char" unsigned by default.
-fuse-cxa-atexit Use __cxa_atexit to register destructors.
-fuse-cxa-get-exception-ptr Use __cxa_get_exception_ptr in exception handling.
-fvisibility-inlines-hidden Marks all inlined functions and methods as having
hidden visibility.
-fvisibility-ms-compat Changes visibility to match Microsoft Visual
Studio by default.
-fvtable-gc No longer supported. Uses of this option are
diagnosed.
-fvtable-thunks No longer supported. Uses of this option are
diagnosed.
-fweak Emit common-like symbols as weak symbols.
-fwide-exec-charset= Convert all wide strings and character constants
to character set .
-fworking-directory Generate a #line directive pointing at the
current working directory.
-fxref No longer supported. Uses of this option are
diagnosed.
-fzero-link Generate lazy class lookup (via objc_getClass())
for use in Zero-Link mode.
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MinGW v6.1.0 64-bit Options - Group 7
-gant Catch typos.
-gen-decls Dump declarations to a .decl file.
-gnat Specify options to GNAT.
-gnatO Set name of output ALI file (internal switch).
-idirafter Add to the end of the system include path.
-imacros Accept definition of macros in .
-imultilib Set to be the multilib include subdirectory.
-include Include the contents of before other files.
-iprefix Specify as a prefix for next two options.
-iquote Add to the end of the quote include path.
-isysroot Set to be the system root directory.
-isystem Add to the start of the system include path.
-iwithprefix Add to the end of the system include path.
-iwithprefixbefore Add to the end of the main include path.
-nostdinc Do not search standard system include directories
(those specified with -isystem will still be
used).
-nostdinc++ Do not search standard system include directories
for C++.
-nostdlib Do not look for object files in standard path.
-o Place output into .
-pedantic Same as -Wpedantic. Use the latter option
instead.
-print-objc-runtime-info Generate C header of platform-specific features.
-remap Remap file names when including files.
-std=c++03 Conform to the ISO 1998 C++ standard revised by
the 2003 technical corrigendum. Same as
-std=c++98.
-std=c++0x Deprecated in favor of -std=c++11. Same as
-std=c++11.
-std=c++11 Conform to the ISO 2011 C++ standard.
-std=c++14 Conform to the ISO 2014 C++ standard.
-std=c++17 Same as -std=c++1z. Use the latter option
instead.
-std=c++1y Deprecated in favor of -std=c++14. Same as
-std=c++14.
-std=c++1z Conform to the ISO 2017(?) C++ draft standard
(experimental and incomplete support).
-std=c++98 Conform to the ISO 1998 C++ standard revised by
the 2003 technical corrigendum.
-std=c11 Conform to the ISO 2011 C standard.
-std=c1x Deprecated in favor of -std=c11. Same as
-std=c11.
-std=c89 Conform to the ISO 1990 C standard. Same as
-std=c90.
-std=c90 Conform to the ISO 1990 C standard.
-std=c99 Conform to the ISO 1999 C standard.
-std=c9x Deprecated in favor of -std=c99. Same as
-std=c99.
-std=gnu++03 Conform to the ISO 1998 C++ standard revised by
the 2003 technical corrigendum with GNU
extensions. Same as -std=gnu++98.
-std=gnu++0x Deprecated in favor of -std=gnu++11. Same as
-std=gnu++11.
-std=gnu++11 Conform to the ISO 2011 C++ standard with GNU
extensions.
-std=gnu++14 Conform to the ISO 2014 C++ standard with GNU
extensions.
-std=gnu++17 Same as -std=gnu++1z. Use the latter option
instead.
-std=gnu++1y Deprecated in favor of -std=gnu++14. Same as
-std=gnu++14.
-std=gnu++1z Conform to the ISO 201z(7?) C++ draft standard
with GNU extensions (experimental and incomplete
support).
-std=gnu++98 Conform to the ISO 1998 C++ standard revised by
the 2003 technical corrigendum with GNU
extensions.
-std=gnu11 Conform to the ISO 2011 C standard with GNU
extensions.
-std=gnu1x Deprecated in favor of -std=gnu11. Same as
-std=gnu11.
-std=gnu89 Conform to the ISO 1990 C standard with GNU
extensions. Same as -std=gnu90.
-std=gnu90 Conform to the ISO 1990 C standard with GNU
extensions.
-std=gnu99 Conform to the ISO 1999 C standard with GNU
extensions.
-std=gnu9x Deprecated in favor of -std=gnu99. Same as
-std=gnu99.
-std=iso9899:1990 Conform to the ISO 1990 C standard. Same as
-std=c90.
-std=iso9899:199409 Conform to the ISO 1990 C standard as amended in
1994.
-std=iso9899:1999 Conform to the ISO 1999 C standard. Same as
-std=c99.
-std=iso9899:199x Deprecated in favor of -std=iso9899:1999. Same
as -std=c99.
-std=iso9899:2011 Conform to the ISO 2011 C standard. Same as
-std=c11.
-traditional-cpp Enable traditional preprocessing.
-trigraphs Support ISO C trigraphs.
-undef Do not predefine system-specific and GCC-specific
macros.
-v Enable verbose output.
-w Suppress warnings.
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MinGW v6.1.0 64-bit Options - Group 8
The --param option recognizes the following as parameters:
predictable-branch-outcome Maximal estimated outcome of branch considered
predictable.
inline-min-speedup The minimal estimated speedup allowing inliner to
ignore inline-insns-single and inline-isnsns-auto.
max-inline-insns-single The maximum number of instructions in a single
function eligible for inlining.
max-inline-insns-auto The maximum number of instructions when
automatically inlining.
max-inline-insns-recursive The maximum number of instructions inline
function can grow to via recursive inlining.
max-inline-insns-recursive-auto The maximum number of instructions non-inline
function can grow to via recursive inlining.
max-inline-recursive-depth The maximum depth of recursive inlining for
inline functions.
max-inline-recursive-depth-auto The maximum depth of recursive inlining for
non-inline functions.
min-inline-recursive-probability Inline recursively only when the probability
of call being executed exceeds the parameter.
max-early-inliner-iterations The maximum number of nested indirect inlining
performed by early inliner.
comdat-sharing-probability Probability that COMDAT function will be shared
with different compilation unit.
partial-inlining-entry-probability Maximum probability of the entry BB of
split region (in percent relative to entry BB of
the function) to make partial inlining happen.
max-variable-expansions-in-unroller If -fvariable-expansion-in-unroller is
used, the maximum number of times that an
individual variable will be expanded during loop
unrolling.
min-vect-loop-bound If -ftree-vectorize is used, the minimal loop
bound of a loop to be considered for
vectorization.
max-delay-slot-insn-search The maximum number of instructions to consider to
fill a delay slot.
max-delay-slot-live-search The maximum number of instructions to consider to
find accurate live register information.
max-pending-list-length The maximum length of scheduling's pending
operations list.
max-modulo-backtrack-attempts The maximum number of backtrack attempts the
scheduler should make when modulo scheduling a
loop.
large-function-insns The size of function body to be considered large.
large-function-growth Maximal growth due to inlining of large function
(in percent).
large-unit-insns The size of translation unit to be considered
large.
inline-unit-growth How much can given compilation unit grow because
of the inlining (in percent).
ipcp-unit-growth How much can given compilation unit grow because
of the interprocedural constant propagation (in
percent).
early-inlining-insns Maximal estimated growth of function body caused
by early inlining of single call.
large-stack-frame The size of stack frame to be considered large.
large-stack-frame-growth Maximal stack frame growth due to inlining (in
percent).
max-gcse-memory The maximum amount of memory to be allocated by
GCSE.
max-gcse-insertion-ratio The maximum ratio of insertions to deletions of
expressions in GCSE.
gcse-after-reload-partial-fraction The threshold ratio for performing partial
redundancy elimination after reload.
gcse-after-reload-critical-fraction The threshold ratio of critical edges
execution count that permit performing redundancy
elimination after reload.
gcse-cost-distance-ratio Scaling factor in calculation of maximum distance
an expression can be moved by GCSE optimizations.
gcse-unrestricted-cost Cost at which GCSE optimizations will not
constraint the distance an expression can travel.
max-hoist-depth Maximum depth of search in the dominator tree for
expressions to hoist.
max-pow-sqrt-depth Maximum depth of sqrt chains to use when
synthesizing exponentiation by a real constant.
max-unrolled-insns The maximum number of instructions to consider to
unroll in a loop.
max-average-unrolled-insns The maximum number of instructions to consider to
unroll in a loop on average.
max-unroll-times The maximum number of unrollings of a single loop.
max-peeled-insns The maximum number of insns of a peeled loop.
max-peel-times The maximum number of peelings of a single loop.
max-peel-branches The maximum number of branches on the path
through the peeled sequence.
max-completely-peeled-insns The maximum number of insns of a completely
peeled loop.
max-completely-peel-times The maximum number of peelings of a single loop
that is peeled completely.
max-once-peeled-insns The maximum number of insns of a peeled loop that
rolls only once.
max-completely-peel-loop-nest-depth The maximum depth of a loop nest we
completely peel.
max-unswitch-insns The maximum number of insns of an unswitched loop.
max-unswitch-level The maximum number of unswitchings in a single
loop.
max-iterations-to-track Bound on the number of iterations the brute force
# of iterations analysis algorithm evaluates.
max-iterations-computation-cost Bound on the cost of an expression to compute
the number of iterations.
sms-max-ii-factor A factor for tuning the upper bound that swing
modulo scheduler uses for scheduling a loop.
sms-min-sc The minimum value of stage count that swing
modulo scheduler will generate.
sms-dfa-history The number of cycles the swing modulo scheduler
considers when checking conflicts using DFA.
sms-loop-average-count-threshold A threshold on the average loop count
considered by the swing modulo scheduler.
hot-bb-count-ws-permille A basic block profile count is considered hot if
it contributes to the given permillage of the
entire profiled execution.
hot-bb-frequency-fraction Select fraction of the maximal frequency of
executions of basic block in function given basic
block needs to have to be considered hot.
unlikely-bb-count-fraction The minimum fraction of profile runs a given
basic block execution count must be not to be
considered unlikely.
align-threshold Select fraction of the maximal frequency of
executions of basic block in function given basic
block get alignment.
align-loop-iterations Loops iterating at least selected number of
iterations will get loop alignement..
max-predicted-iterations The maximum number of loop iterations we predict
statically.
builtin-expect-probability Set the estimated probability in percentage for
builtin expect. The default value is 90%
probability.
tracer-dynamic-coverage-feedback The percentage of function, weighted by
execution frequency, that must be covered by
trace formation. Used when profile feedback is
available.
tracer-dynamic-coverage The percentage of function, weighted by execution
frequency, that must be covered by trace
formation. Used when profile feedback is not
available.
tracer-max-code-growth Maximal code growth caused by tail duplication
(in percent).
tracer-min-branch-ratio Stop reverse growth if the reverse probability of
best edge is less than this threshold (in
percent).
tracer-min-branch-probability-feedback Stop forward growth if the probability
of best edge is less than this threshold (in
percent). Used when profile feedback is available.
tracer-min-branch-probability Stop forward growth if the probability of best
edge is less than this threshold (in percent).
Used when profile feedback is not available.
max-crossjump-edges The maximum number of incoming edges to consider
for crossjumping.
min-crossjump-insns The minimum number of matching instructions to
consider for crossjumping.
max-grow-copy-bb-insns The maximum expansion factor when copying basic
blocks.
max-goto-duplication-insns The maximum number of insns to duplicate when
unfactoring computed gotos.
max-cse-path-length The maximum length of path considered in cse.
max-cse-insns The maximum instructions CSE process before
flushing.
lim-expensive The minimum cost of an expensive expression in
the loop invariant motion.
iv-consider-all-candidates-bound Bound on number of candidates below that all
candidates are considered in iv optimizations.
iv-max-considered-uses Bound on number of iv uses in loop optimized in
iv optimizations.
iv-always-prune-cand-set-bound If number of candidates in the set is smaller,
we always try to remove unused ivs during its
optimization.
scev-max-expr-size Bound on size of expressions used in the scalar
evolutions analyzer.
scev-max-expr-complexity Bound on the complexity of the expressions in the
scalar evolutions analyzer.
vect-max-version-for-alignment-checks Bound on number of runtime checks
inserted by the vectorizer's loop versioning for
alignment check.
vect-max-version-for-alias-checks Bound on number of runtime checks inserted
by the vectorizer's loop versioning for alias
check.
vect-max-peeling-for-alignment Max number of loop peels to enhancement
alignment of data references in a loop.
max-cselib-memory-locations The maximum memory locations recorded by cselib.
ggc-min-expand Minimum heap expansion to trigger garbage
collection, as a percentage of the total size of
the heap.
ggc-min-heapsize Minimum heap size before we start collecting
garbage, in kilobytes.
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MinGW v6.1.0 64-bit Options - Group 9
max-reload-search-insns The maximum number of instructions to search
backward when looking for equivalent reload.
sink-frequency-threshold Target block's relative execution frequency (as a
percentage) required to sink a statement.
max-sched-region-blocks The maximum number of blocks in a region to be
considered for interblock scheduling.
max-sched-region-insns The maximum number of insns in a region to be
considered for interblock scheduling.
max-pipeline-region-blocks The maximum number of blocks in a region to be
considered for interblock scheduling.
max-pipeline-region-insns The maximum number of insns in a region to be
considered for interblock scheduling.
min-spec-prob The minimum probability of reaching a source
block for interblock speculative scheduling.
max-sched-extend-regions-iters The maximum number of iterations through CFG
to extend regions.
max-sched-insn-conflict-delay The maximum conflict delay for an insn to be
considered for speculative motion.
sched-spec-prob-cutoff The minimal probability of speculation success
(in percents), so that speculative insn will be
scheduled.
sched-state-edge-prob-cutoff The minimum probability an edge must have for
the scheduler to save its state across it.
selsched-max-lookahead The maximum size of the lookahead window of
selective scheduling.
selsched-max-sched-times Maximum number of times that an insn could be
scheduled.
selsched-insns-to-rename Maximum number of instructions in the ready list
that are considered eligible for renaming.
sched-mem-true-dep-cost Minimal distance between possibly conflicting
store and load.
sched-autopref-queue-depth Hardware autoprefetcher scheduler model control
flag. Number of lookahead cycles the model looks
into; at '0' only enable instruction sorting
heuristic. Disabled by default.
max-last-value-rtl The maximum number of RTL nodes that can be
recorded as combiner's last value.
max-combine-insns The maximum number of insns combine tries to
combine.
integer-share-limit The upper bound for sharing integer constants.
ssp-buffer-size The lower bound for a buffer to be considered for
stack smashing protection.
min-size-for-stack-sharing The minimum size of variables taking part in
stack slot sharing when not optimizing.
max-jump-thread-duplication-stmts Maximum number of statements allowed in a
block that needs to be duplicated when threading
jumps.
max-fields-for-field-sensitive Maximum number of fields in a structure before
pointer analysis treats the structure as a single
variable.
max-sched-ready-insns The maximum number of instructions ready to be
issued to be considered by the scheduler during
the first scheduling pass.
max-dse-active-local-stores Maximum number of active local stores in RTL dead
store elimination.
prefetch-latency The number of insns executed before prefetch is
completed.
simultaneous-prefetches The number of prefetches that can run at the same
time.
l1-cache-size The size of L1 cache.
l1-cache-line-size The size of L1 cache line.
l2-cache-size The size of L2 cache.
use-canonical-types Whether to use canonical types.
max-partial-antic-length Maximum length of partial antic set when
performing tree pre optimization.
sccvn-max-scc-size Maximum size of a SCC before SCCVN stops
processing a function.
sccvn-max-alias-queries-per-access Maximum number of disambiguations to
perform per memory access.
ira-max-loops-num Max loops number for regional RA.
ira-max-conflict-table-size Max size of conflict table in MB.
ira-loop-reserved-regs The number of registers in each class kept unused
by loop invariant motion.
lra-max-considered-reload-pseudos The max number of reload pseudos which are
considered during spilling a non-reload pseudo.
lra-inheritance-ebb-probability-cutoff Minimal fall-through edge probability
in percentage used to add BB to inheritance EBB
in LRA.
switch-conversion-max-branch-ratio The maximum ratio between array size and
switch branches for a switch conversion to take
place.
loop-block-tile-size size of tiles for loop blocking.
graphite-max-nb-scop-params maximum number of parameters in a SCoP.
graphite-max-bbs-per-function maximum number of basic blocks per function to
be analyzed by Graphite.
graphite-max-arrays-per-scop maximum number of arrays per scop.
graphite-min-loops-per-function minimal number of loops per function to be
analyzed by Graphite.
max-isl-operations maximum number of isl operations, 0 means
unlimited
loop-max-datarefs-for-datadeps Maximum number of datarefs in loop for
building loop data dependencies.
loop-invariant-max-bbs-in-loop Max basic blocks number in loop for loop
invariant motion.
profile-func-internal-id use internal function id in profile lookup.
indir-call-topn-profile track topn target addresses in indirect-call
profile.
slp-max-insns-in-bb Maximum number of instructions in basic block to
be considered for SLP vectorization.
min-insn-to-prefetch-ratio Min. ratio of insns to prefetches to enable
prefetching for a loop with an unknown trip count.
prefetch-min-insn-to-mem-ratio Min. ratio of insns to mem ops to enable
prefetching in a loop.
max-vartrack-size Max. size of var tracking hash tables.
max-vartrack-expr-depth Max. recursion depth for expanding var tracking
expressions.
max-vartrack-reverse-op-size Max. size of loc list for which reverse ops
should be added.
min-nondebug-insn-uid The minimum UID to be used for a nondebug insn.
ipa-sra-ptr-growth-factor Maximum allowed growth of size of new parameters
ipa-sra replaces a pointer to an aggregate with.
tm-max-aggregate-size Size in bytes after which thread-local aggregates
should be instrumented with the logging functions
instead of save/restore pairs.
sra-max-scalarization-size-Ospeed Maximum size, in storage units, of an
aggregate which should be considered for
scalarization when compiling for speed.
sra-max-scalarization-size-Osize Maximum size, in storage units, of an
aggregate which should be considered for
scalarization when compiling for size.
ipa-cp-value-list-size Maximum size of a list of values associated with
each parameter for interprocedural constant
propagation.
ipa-cp-eval-threshold Threshold ipa-cp opportunity evaluation that is
still considered beneficial to clone..
ipa-cp-recursion-penalty Percentage penalty the recursive functions will
receive when they are evaluated for cloning..
ipa-cp-single-call-penalty Percentage penalty functions containg a single
call to another function will receive when they
are evaluated for cloning..
ipa-max-agg-items Maximum number of aggregate content items for a
parameter in jump functions and lattices.
ipa-cp-loop-hint-bonus Compile-time bonus IPA-CP assigns to candidates
which make loop bounds or strides known..
ipa-cp-array-index-hint-bonus Compile-time bonus IPA-CP assigns to candidates
which make an array index known..
ipa-max-aa-steps Maximum number of statements that will be visited
by IPA formal parameter analysis based on alias
analysis in any given function.
lto-partitions Number of partitions the program should be split
to.
lto-min-partition Minimal size of a partition for LTO (in estimated
instructions).
cxx-max-namespaces-for-diagnostic-help Maximum number of namespaces to search
for alternatives when name lookup fails.
max-stores-to-sink Maximum number of conditional store pairs that
can be sunk.
case-values-threshold The smallest number of different values for which
it is best to use a jump-table instead of a tree
of conditional branches, if 0, use the default
for the machine.
allow-store-data-races Allow new data races on stores to be introduced.
tree-reassoc-width Set the maximum number of instructions executed
in parallel in reassociated tree. If 0, use the
target dependent heuristic..
max-tail-merge-comparisons Maximum amount of similar bbs to compare a bb
with.
max-tail-merge-iterations Maximum amount of iterations of the pass over a
function.
max-tracked-strlens Maximum number of strings for which strlen
optimization pass will track string lengths.
sched-pressure-algorithm Which -fsched-pressure algorithm to apply.
max-slsr-cand-scan Maximum length of candidate scans for straight-
line strength reduction.
asan-stack Enable asan stack protection.
asan-globals Enable asan globals protection.
asan-instrument-writes Enable asan store operations protection.
asan-instrument-reads Enable asan load operations protection.
asan-memintrin Enable asan builtin functions protection.
asan-use-after-return Enable asan detection of use-after-return bugs.
asan-instrumentation-with-call-threshold Use callbacks instead of inline code
if number of accesses in function becomes greater
or equal to this number.
uninit-control-dep-attempts Maximum number of nested calls to search for
control dependencies during uninitialized
variable analysis.
chkp-max-ctor-size Maximum number of statements to be included into
a single static constructor generated by Pointer
Bounds Checker.
fsm-scale-path-stmts Scale factor to apply to the number of statements
in a threading path when comparing to the number
of (scaled) blocks.
fsm-maximum-phi-arguments Maximum number of arguments a PHI may have before
the FSM threader will not try to thread through
its block.
fsm-scale-path-blocks Scale factor to apply to the number of blocks in
a threading path when comparing to the number of
(scaled) statements.
max-fsm-thread-path-insns Maximum number of instructions to copy when
duplicating blocks on a finite state automaton
jump thread path.
max-fsm-thread-length Maximum number of basic blocks on a finite state
automaton jump thread path.
max-fsm-thread-paths Maximum number of new jump thread paths to create
for a finite state automaton.
parloops-chunk-size Chunk size of omp schedule for loops parallelized
by parloops.
parloops-schedule Schedule type of omp schedule for loops
parallelized by parloops (static, dynamic,
guided, auto, runtime).
max-ssa-name-query-depth Maximum recursion depth allowed when querying a
property of an SSA name.
max-rtl-if-conversion-insns Maximum number of insns in a basic block to
consider for RTL if-conversion.
hsa-gen-debug-stores Level of hsa debug stores verbosity
max-speculative-devirt-maydefs Maximum number of may-defs visited when
devirtualizing speculatively
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MinGW v6.1.0 64-bit Options - Group 10
The following options control compiler warning messages:
--extra-warnings Same as -Wextra. Use the latter option instead.
-W This switch is deprecated; use -Wextra instead.
Same as -Wextra.
-Waggregate-return Warn about returning structures, unions or arrays.
-Waggressive-loop-optimizations Warn if a loop with constant number of
iterations triggers undefined behavior.
-Warray-bounds Warn if an array is accessed out of bounds.
-Warray-bounds= Warn if an array is accessed out of bounds.
-Wattributes Warn about inappropriate attribute usage.
-Wcast-align Warn about pointer casts which increase alignment.
-Wcoverage-mismatch Warn in case profiles in -fprofile-use do not
match.
-Wdeprecated-declarations Warn about uses of __attribute__((deprecated))
declarations.
-Wdisabled-optimization Warn when an optimization pass is disabled.
-Wframe-larger-than= Warn if a function's stack frame requires more
than bytes.
-Wfree-nonheap-object Warn when attempting to free a non-heap object.
-Whsa Warn when a function cannot be expanded to HSAIL.
-Winline Warn when an inlined function cannot be inlined.
-Winvalid-memory-model Warn when an atomic memory model parameter is
known to be outside the valid range.
-Wlarger-than- Same as -Wlarger-than=. Use the latter option
instead.
-Wlarger-than= Warn if an object is larger than bytes.
-Wlto-type-mismatch During link time optimization warn about
mismatched types of global declarations.
-Wmissing-noreturn Same as -Wsuggest-attribute=noreturn. Use the
latter option instead.
-Wnull-dereference Warn if dereferencing a NULL pointer may lead to
erroneous or undefined behavior.
-Wodr Warn about some C++ One Definition Rule
violations during link time optimization.
-Woverflow Warn about overflow in arithmetic expressions.
-Wpacked Warn when the packed attribute has no effect on
struct layout.
-Wpadded Warn when padding is required to align structure
members.
-Wreturn-local-addr Warn about returning a pointer/reference to a
local or temporary variable.
-Wshadow Warn when one local variable shadows another.
-Wstack-protector Warn when not issuing stack smashing protection
for some reason.
-Wstack-usage= Warn if stack usage might be larger than
specified amount.
-Wstrict-aliasing Warn about code which might break strict aliasing
rules.
-Wstrict-overflow Warn about optimizations that assume that signed
overflow is undefined.
-Wsuggest-attribute=const Warn about functions which might be candidates
for __attribute__((const)).
-Wsuggest-attribute=noreturn Warn about functions which might be candidates
for __attribute__((noreturn)).
-Wsuggest-attribute=pure Warn about functions which might be candidates
for __attribute__((pure)).
-Wsuggest-final-methods Warn about C++ virtual methods where adding final
keyword would improve code quality.
-Wsuggest-final-types Warn about C++ polymorphic types where adding
final keyword would improve code quality.
-Wtrampolines Warn whenever a trampoline is generated.
-Wtype-limits Warn if a comparison is always true or always
false due to the limited range of the data type.
-Wunreachable-code Does nothing. Preserved for backward
compatibility.
-Wunsafe-loop-optimizations Warn if the loop cannot be optimized due to
nontrivial assumptions.
-Wunused-but-set-parameter Warn when a function parameter is only set,
otherwise unused.
-Wunused-but-set-variable Warn when a variable is only set, otherwise
unused.
-Wunused-function Warn when a function is unused.
-Wunused-parameter Warn when a function parameter is unused.
-Wunused-value Warn when an expression value is unused.
-Wvector-operation-performance Warn when a vector operation is compiled
outside the SIMD.
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MinGW v6.1.0 64-bit Options - Group 11
The following options control optimizations:
-O Set optimization level to .
-Ofast Optimize for speed disregarding exact standards
compliance.
-Og Optimize for debugging experience rather than
speed or size.
-Os Optimize for space rather than speed.
-faggressive-loop-optimizations Aggressively optimize loops using language
constraints.
-falign-functions Align the start of functions.
-falign-jumps Align labels which are only reached by jumping.
-falign-labels Align all labels.
-falign-loops Align the start of loops.
-fassociative-math Allow optimization for floating-point arithmetic
which may change the result of the operation due
to rounding.
-fasynchronous-unwind-tables Generate unwind tables that are exact at each
instruction boundary.
-fauto-inc-dec Generate auto-inc/dec instructions.
-fbranch-count-reg Replace add, compare, branch with branch on count
register.
-fbranch-probabilities Use profiling information for branch
probabilities.
-fbranch-target-load-optimize Perform branch target load optimization before
prologue / epilogue threading.
-fbranch-target-load-optimize2 Perform branch target load optimization after
prologue / epilogue threading.
-fbtr-bb-exclusive Restrict target load migration not to re-use
registers in any basic block.
-fcaller-saves Save registers around function calls.
-fcombine-stack-adjustments Looks for opportunities to reduce stack
adjustments and stack references.
-fcompare-elim Perform comparison elimination after register
allocation has finished.
-fconserve-stack Do not perform optimizations increasing
noticeably stack usage.
-fcprop-registers Perform a register copy-propagation optimization
pass.
-fcrossjumping Perform cross-jumping optimization.
-fcse-follow-jumps When running CSE, follow jumps to their targets.
-fcx-fortran-rules Complex multiplication and division follow
Fortran rules.
-fcx-limited-range Omit range reduction step when performing complex
division.
-fdce Use the RTL dead code elimination pass.
-fdefer-pop Defer popping functions args from stack until
later.
-fdelayed-branch Attempt to fill delay slots of branch
instructions.
-fdelete-dead-exceptions Delete dead instructions that may throw
exceptions.
-fdelete-null-pointer-checks Delete useless null pointer checks.
-fdevirtualize Try to convert virtual calls to direct ones.
-fdevirtualize-speculatively Perform speculative devirtualization.
-fdse Use the RTL dead store elimination pass.
-fearly-inlining Perform early inlining.
-fexceptions Enable exception handling.
-fexpensive-optimizations Perform a number of minor, expensive
optimizations.
-ffinite-math-only Assume no NaNs or infinities are generated.
-ffloat-store Don't allocate floats and doubles in extended-
precision registers.
-fforward-propagate Perform a forward propagation pass on RTL.
-ffp-contract= -ffp-contract=[off|on|fast] Perform floating-
point expression contraction.
-ffunction-cse Allow function addresses to be held in registers.
-fgcse Perform global common subexpression elimination.
-fgcse-after-reload Perform global common subexpression elimination
after register allocation has finished.
-fgcse-las Perform redundant load after store elimination in
global common subexpression elimination.
-fgcse-lm Perform enhanced load motion during global common
subexpression elimination.
-fgcse-sm Perform store motion after global common
subexpression elimination.
-fgraphite Enable in and out of Graphite representation.
-fgraphite-identity Enable Graphite Identity transformation.
-fguess-branch-probability Enable guessing of branch probabilities.
-fhoist-adjacent-loads Enable hoisting adjacent loads to encourage
generating conditional move instructions.
-fif-conversion Perform conversion of conditional jumps to
branchless equivalents.
-fif-conversion2 Perform conversion of conditional jumps to
conditional execution.
-findirect-inlining Perform indirect inlining.
-finline Enable inlining of function declared "inline",
disabling disables all inlining.
-finline-atomics Inline __atomic operations when a lock free
instruction sequence is available.
-finline-functions-called-once Integrate functions only required by their
single caller.
-finline-small-functions Integrate functions into their callers when code
size is known not to grow.
-fipa-cp Perform interprocedural constant propagation.
-fipa-cp-alignment Perform alignment discovery and propagation to
make Interprocedural constant propagation
stronger.
-fipa-cp-clone Perform cloning to make Interprocedural constant
propagation stronger.
-fipa-icf Perform Identical Code Folding for functions and
read-only variables.
-fipa-icf-functions Perform Identical Code Folding for functions.
-fipa-profile Perform interprocedural profile propagation.
-fipa-pta Perform interprocedural points-to analysis.
-fipa-pure-const Discover pure and const functions.
-fipa-ra Use caller save register across calls if possible.
-fipa-reference Discover readonly and non addressable static
variables.
-fipa-sra Perform interprocedural reduction of aggregates.
-fira-algorithm= -fira-algorithm=[CB|priority] Set the used IRA
algorithm.
-fira-hoist-pressure Use IRA based register pressure calculation in
RTL hoist optimizations.
-fira-loop-pressure Use IRA based register pressure calculation in
RTL loop optimizations.
-fira-region= -fira-region=[one|all|mixed] Set regions for IRA.
-fira-share-save-slots Share slots for saving different hard registers.
-fira-share-spill-slots Share stack slots for spilled pseudo-registers.
-fisolate-erroneous-paths-attribute Detect paths that trigger erroneous or
undefined behavior due a null value being used in
a way forbidden by a returns_nonnull or nonnull
attribute. Isolate those paths from the main
control flow and turn the statement with
erroneous or undefined behavior into a trap.
-fisolate-erroneous-paths-dereference Detect paths that trigger erroneous or
undefined behavior due to dereferencing a null
pointer. Isolate those paths from the main
control flow and turn the statement with
erroneous or undefined behavior into a trap.
-fivopts Optimize induction variables on trees.
-fjump-tables Use jump tables for sufficiently large switch
statements.
-fkeep-gc-roots-live This option lacks documentation.
-flifetime-dse Tell DSE that the storage for a C++ object is
dead when the constructor starts and when the
destructor finishes.
-flifetime-dse= This option lacks documentation.
-flive-range-shrinkage Relief of register pressure through live range
shrinkage.
-floop-nest-optimize Enable the loop nest optimizer.
-floop-parallelize-all Mark all loops as parallel.
-flra-remat Do CFG-sensitive rematerialization in LRA.
-fmath-errno Set errno after built-in math functions.
-fmodulo-sched Perform SMS based modulo scheduling before the
first scheduling pass.
-fmodulo-sched-allow-regmoves Perform SMS based modulo scheduling with
register moves allowed.
-fmove-loop-invariants Move loop invariant computations out of loops.
-fnon-call-exceptions Support synchronous non-call exceptions.
-fomit-frame-pointer When possible do not generate stack frames.
-fopt-info Enable all optimization info dumps on stderr.
-foptimize-sibling-calls Optimize sibling and tail recursive calls.
-foptimize-strlen Enable string length optimizations on trees.
-fpack-struct Pack structure members together without holes.
-fpack-struct= Set initial maximum structure member alignment.
-fpartial-inlining Perform partial inlining.
-fpeel-loops Perform loop peeling.
-fpeephole Enable machine specific peephole optimizations.
-fpeephole2 Enable an RTL peephole pass before sched2.
-fplt Use PLT for PIC calls (-fno-plt: load the address
from GOT at call site).
-fpredictive-commoning Run predictive commoning optimization.
-fprefetch-loop-arrays Generate prefetch instructions, if available, for
arrays in loops.
-freciprocal-math Same as -fassociative-math for expressions which
include division.
-freg-struct-return Return small aggregates in registers.
-frename-registers Perform a register renaming optimization pass.
-freorder-blocks Reorder basic blocks to improve code placement.
-freorder-blocks-algorithm= -freorder-blocks-algorithm=[simple|stc] Set the
used basic block reordering algorithm.
-freorder-blocks-and-partition Reorder basic blocks and partition into hot
and cold sections.
-freorder-functions Reorder functions to improve code placement.
-frerun-cse-after-loop Add a common subexpression elimination pass after
loop optimizations.
-freschedule-modulo-scheduled-loops Enable/Disable the traditional scheduling
in loops that already passed modulo scheduling.
-frounding-math Disable optimizations that assume default FP
rounding behavior.
-fsched-critical-path-heuristic Enable the critical path heuristic in the
scheduler.
-fsched-dep-count-heuristic Enable the dependent count heuristic in the
scheduler.
-fsched-group-heuristic Enable the group heuristic in the scheduler.
-fsched-interblock Enable scheduling across basic blocks.
-fsched-last-insn-heuristic Enable the last instruction heuristic in the
scheduler.
-fsched-pressure Enable register pressure sensitive insn
scheduling.
-fsched-rank-heuristic Enable the rank heuristic in the scheduler.
-fsched-spec Allow speculative motion of non-loads.
-fsched-spec-insn-heuristic Enable the speculative instruction heuristic in
the scheduler.
-fsched-spec-load Allow speculative motion of some loads.
-fsched-spec-load-dangerous Allow speculative motion of more loads.
-fsched-stalled-insns Allow premature scheduling of queued insns.
-fsched-stalled-insns-dep Set dependence distance checking in premature
scheduling of queued insns.
-fsched-stalled-insns-dep= Set dependence distance checking in
premature scheduling of queued insns.
-fsched-stalled-insns= Set number of queued insns that can be
prematurely scheduled.
-fsched2-use-superblocks If scheduling post reload, do superblock
scheduling.
-fschedule-fusion Perform a target dependent instruction fusion
optimization pass.
-fschedule-insns Reschedule instructions before register
allocation.
-fschedule-insns2 Reschedule instructions after register allocation.
-fsection-anchors Access data in the same section from shared
anchor points.
-fsel-sched-pipelining Perform software pipelining of inner loops during
selective scheduling.
-fsel-sched-pipelining-outer-loops Perform software pipelining of outer loops
during selective scheduling.
-fsel-sched-reschedule-pipelined Reschedule pipelined regions without
pipelining.
-fselective-scheduling Schedule instructions using selective scheduling
algorithm.
-fselective-scheduling2 Run selective scheduling after reload.
-fset-stack-executable For nested functions on stack executable
permission is set.
-fshrink-wrap Emit function prologues only before parts of the
function that need it, rather than at the top of
the function.
-fsignaling-nans Disable optimizations observable by IEEE
signaling NaNs.
-fsigned-zeros Disable floating point optimizations that ignore
the IEEE signedness of zero.
-fsimd-cost-model= Specifies the vectorization cost model for code
marked with a simd directive.
-fsingle-precision-constant Convert floating point constants to single
precision constants.
-fsplit-ivs-in-unroller Split lifetimes of induction variables when loops
are unrolled.
-fsplit-paths Split paths leading to loop backedges.
-fsplit-wide-types Split wide types into independent registers.
-fssa-backprop Enable backward propagation of use properties at
the SSA level.
-fssa-phiopt Optimize conditional patterns using SSA PHI nodes.
-fstack-reuse= -fstack-reuse=[all|named_vars|none] Set stack
reuse level for local variables.
-fstdarg-opt Optimize amount of stdarg registers saved to
stack at start of function.
-fstrict-aliasing Assume strict aliasing rules apply.
-fstrict-overflow Treat signed overflow as undefined.
-fstrict-volatile-bitfields Force bitfield accesses to match their type width.
-fthread-jumps Perform jump threading optimizations.
-ftracer Perform superblock formation via tail duplication.
-ftrapping-math Assume floating-point operations can trap.
-ftrapv Trap for signed overflow in addition, subtraction
and multiplication.
-ftree-bit-ccp Enable SSA-BIT-CCP optimization on trees.
-ftree-builtin-call-dce Enable conditional dead code elimination for
builtin calls.
-ftree-ccp Enable SSA-CCP optimization on trees.
-ftree-ch Enable loop header copying on trees.
-ftree-coalesce-vars Enable SSA coalescing of user variables.
-ftree-copy-prop Enable copy propagation on trees.
-ftree-cselim Transform condition stores into unconditional
ones.
-ftree-dce Enable SSA dead code elimination optimization on
trees.
-ftree-dominator-opts Enable dominator optimizations.
-ftree-dse Enable dead store elimination.
-ftree-forwprop Enable forward propagation on trees.
-ftree-fre Enable Full Redundancy Elimination (FRE) on trees.
-ftree-loop-distribute-patterns Enable loop distribution for patterns
transformed into a library call.
-ftree-loop-distribution Enable loop distribution on trees.
-ftree-loop-if-convert Convert conditional jumps in innermost loops to
branchless equivalents.
-ftree-loop-if-convert-stores Also if-convert conditional jumps containing
memory writes.
-ftree-loop-im Enable loop invariant motion on trees.
-ftree-loop-ivcanon Create canonical induction variables in loops.
-ftree-loop-optimize Enable loop optimizations on tree level.
-ftree-loop-vectorize Enable loop vectorization on trees.
-ftree-lrs Perform live range splitting during the SSA-
>normal pass.
-ftree-parallelize-loops= Enable automatic parallelization of loops.
-ftree-partial-pre In SSA-PRE optimization on trees, enable partial-
partial redundancy elimination.
-ftree-phiprop Enable hoisting loads from conditional pointers.
-ftree-pre Enable SSA-PRE optimization on trees.
-ftree-pta Perform function-local points-to analysis on
trees.
-ftree-reassoc Enable reassociation on tree level.
-ftree-scev-cprop Enable copy propagation of scalar-evolution
information.
-ftree-sink Enable SSA code sinking on trees.
-ftree-slp-vectorize Enable basic block vectorization (SLP) on trees.
-ftree-slsr Perform straight-line strength reduction.
-ftree-sra Perform scalar replacement of aggregates.
-ftree-switch-conversion Perform conversions of switch initializations.
-ftree-tail-merge Enable tail merging on trees.
-ftree-ter Replace temporary expressions in the SSA->normal
pass.
-ftree-vectorize Enable vectorization on trees.
-ftree-vrp Perform Value Range Propagation on trees.
-funconstrained-commons Assume common declarations may be overridden with
ones with a larger trailing array.
-funroll-all-loops Perform loop unrolling for all loops.
-funroll-loops Perform loop unrolling when iteration count is
known.
-funsafe-loop-optimizations Allow loop optimizations to assume that the loops
behave in normal way.
-funsafe-math-optimizations Allow math optimizations that may violate IEEE or
ISO standards.
-funswitch-loops Perform loop unswitching.
-funwind-tables Just generate unwind tables for exception
handling.
-fvar-tracking Perform variable tracking.
-fvar-tracking-assignments Perform variable tracking by annotating
assignments.
-fvar-tracking-assignments-toggle Toggle -fvar-tracking-assignments.
-fvar-tracking-uninit Perform variable tracking and also tag variables
that are uninitialized.
-fvariable-expansion-in-unroller Apply variable expansion when loops are
unrolled.
-fvect-cost-model= Specifies the cost model for vectorization.
-fvpt Use expression value profiles in optimizations.
-fweb Construct webs and split unrelated uses of single
variable.
-fwrapv Assume signed arithmetic overflow wraps around.
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MinGW v6.1.0 64-bit Options - Group 12
The following options are target specific:
-m128bit-long-double sizeof(long double) is 16.
-m16 Generate 16bit i386 code.
-m32 Generate 32bit i386 code.
-m3dnow Support 3DNow! built-in functions.
-m3dnowa Support Athlon 3Dnow! built-in functions.
-m64 Generate 64bit x86-64 code.
-m80387 Use hardware fp.
-m8bit-idiv Expand 32bit/64bit integer divide into 8bit
unsigned integer divide with run-time check.
-m96bit-long-double sizeof(long double) is 12.
-mabi= Generate code that conforms to the given ABI.
-mabm Support code generation of Advanced Bit
Manipulation (ABM) instructions.
-maccumulate-outgoing-args Reserve space for outgoing arguments in the
function prologue.
-maddress-mode= Use given address mode.
-madx Support flag-preserving add-carry instructions.
-maes Support AES built-in functions and code
generation.
-malign-data= Use the given data alignment.
-malign-double Align some doubles on dword boundary.
-malign-functions= Function starts are aligned to this power of 2.
-malign-jumps= Jump targets are aligned to this power of 2.
-malign-loops= Loop code aligned to this power of 2.
-malign-stringops Align destination of the string operations.
-march= Generate code for given CPU.
-masm= Use given assembler dialect.
-mavx Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2 and AVX built-in functions and code
generation.
-mavx2 Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX and AVX2 built-in functions and code
generation.
-mavx256-split-unaligned-load Split 32-byte AVX unaligned load.
-mavx256-split-unaligned-store Split 32-byte AVX unaligned store.
-mavx512bw Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512BW built-
in functions and code generation.
-mavx512cd Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512CD built-
in functions and code generation.
-mavx512dq Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512DQ built-
in functions and code generation.
-mavx512er Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512ER built-
in functions and code generation.
-mavx512f Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F built-in functions
and code generation.
-mavx512ifma Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512IFMA
built-in functions and code generation.
-mavx512pf Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512PF built-
in functions and code generation.
-mavx512vbmi Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512VBMI
built-in functions and code generation.
-mavx512vl Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX, AVX2 and AVX512F and AVX512VL built-
in functions and code generation.
-mbmi Support BMI built-in functions and code
generation.
-mbmi2 Support BMI2 built-in functions and code
generation.
-mbranch-cost= Branches are this expensive (1-5, arbitrary
units).
-mcld Generate cld instruction in the function prologue.
-mclflushopt Support CLFLUSHOPT instructions.
-mclwb Support CLWB instruction.
-mclzero Support CLZERO built-in functions and code
generation.
-mcmodel= Use given x86-64 code model.
-mconsole Create console application.
-mcpu= Same as -mtune=. Use the latter option instead.
Uses of this option are diagnosed.
-mcrc32 Support code generation of crc32 instruction.
-mcx16 Support code generation of cmpxchg16b instruction.
-mdispatch-scheduler Do dispatch scheduling if processor is bdver1,
bdver2, bdver3, bdver4 or znver1 and Haifa
scheduling is selected.
-mdll Generate code for a DLL.
-mdump-tune-features This option lacks documentation.
-mf16c Support F16C built-in functions and code
generation.
-mfancy-math-387 Generate sin, cos, sqrt for FPU.
-mfentry Emit profiling counter call at function entry
before prologue.
-mfma Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1,
SSE4.2, AVX and FMA built-in functions and code
generation.
-mfma4 Support FMA4 built-in functions and code
generation.
-mforce-drap Always use Dynamic Realigned Argument Pointer
(DRAP) to realign stack.
-mfp-ret-in-387 Return values of functions in FPU registers.
-mfpmath= Generate floating point mathematics using given
instruction set.
-mfsgsbase Support FSGSBASE built-in functions and code
generation.
-mfused-madd Same as -ffp-contract=. Use the latter option
instead. Uses of this option are diagnosed.
-mfxsr Support FXSAVE and FXRSTOR instructions.
-mhard-float Use hardware fp.
-mhle Support Hardware Lock Elision prefixes.
-miamcu Generate code that conforms to Intel MCU psABI.
-mieee-fp Use IEEE math for fp comparisons.
-mincoming-stack-boundary= Assume incoming stack aligned to this power of 2.
-minline-all-stringops Inline all known string operations.
-minline-stringops-dynamically Inline memset/memcpy string operations, but
perform inline version only for small blocks.
-mintel-syntax Same as -masm=. Use the latter option instead.
Uses of this option are diagnosed.
-mlarge-data-threshold= Data greater than given threshold will go into
.ldata section in x86-64 medium model.
-mlong-double-128 Use 128-bit long double.
-mlong-double-64 Use 64-bit long double.
-mlong-double-80 Use 80-bit long double.
-mlwp Support LWP built-in functions and code
generation.
-mlzcnt Support LZCNT built-in function and code
generation.
-mmemcpy-strategy= Specify memcpy expansion strategy when expected
size is known.
-mmemset-strategy= Specify memset expansion strategy when expected
size is known.
-mmitigate-rop Attempt to avoid generating instruction sequences
containing ret bytes.
-mmmx Support MMX built-in functions.
-mmovbe Support code generation of movbe instruction.
-mmpx Support MPX code generation.
-mms-bitfields Use native (MS) bitfield layout.
-mmwaitx Support MWAITX and MONITORX built-in functions
and code generation.
-mno-align-stringops This option lacks documentation.
-mno-default Clear all tune features.
-mno-fancy-math-387 This option lacks documentation.
-mno-push-args This option lacks documentation.
-mno-red-zone This option lacks documentation.
-mno-sse4 Do not support SSE4.1 and SSE4.2 built-in
functions and code generation.
-mnop-fun-dllimport Ignore dllimport for functions.
-mnop-mcount Generate mcount/__fentry__ calls as nops. To
activate they need to be patched in.
-momit-leaf-frame-pointer Omit the frame pointer in leaf functions.
-mpc32 Set 80387 floating-point precision to 32-bit.
-mpc64 Set 80387 floating-point precision to 64-bit.
-mpc80 Set 80387 floating-point precision to 80-bit.
-mpclmul Support PCLMUL built-in functions and code
generation.
-mpcommit Support PCOMMIT instruction.
-mpe-aligned-commons Use the GNU extension to the PE format for
aligned common data.
-mpku Support PKU built-in functions and code
generation.
-mpopcnt Support code generation of popcnt instruction.
-mprefer-avx128 Use 128-bit AVX instructions instead of 256-bit
AVX instructions in the auto-vectorizer.
-mpreferred-stack-boundary= Attempt to keep stack aligned to this power of 2.
-mprefetchwt1 Support PREFETCHWT1 built-in functions and code
generation.
-mprfchw Support PREFETCHW instruction.
-mpush-args Use push instructions to save outgoing arguments.
-mrdrnd Support RDRND built-in functions and code
generation.
-mrdseed Support RDSEED instruction.
-mrecip Generate reciprocals instead of divss and sqrtss.
-mrecip= Control generation of reciprocal estimates.
-mrecord-mcount Generate __mcount_loc section with all mcount or
__fentry__ calls.
-mred-zone Use red-zone in the x86-64 code.
-mregparm= Number of registers used to pass integer
arguments.
-mrtd Alternate calling convention.
-mrtm Support RTM built-in functions and code
generation.
-msahf Support code generation of sahf instruction in
64bit x86-64 code.
-msha Support SHA1 and SHA256 built-in functions and
code generation.
-mskip-rax-setup Skip setting up RAX register when passing
variable arguments.
-msoft-float Do not use hardware fp.
-msse Support MMX and SSE built-in functions and code
generation.
-msse2 Support MMX, SSE and SSE2 built-in functions and
code generation.
-msse2avx Encode SSE instructions with VEX prefix.
-msse3 Support MMX, SSE, SSE2 and SSE3 built-in
functions and code generation.
-msse4 Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and
SSE4.2 built-in functions and code generation.
-msse4.1 Support MMX, SSE, SSE2, SSE3, SSSE3 and SSE4.1
built-in functions and code generation.
-msse4.2 Support MMX, SSE, SSE2, SSE3, SSSE3, SSE4.1 and
SSE4.2 built-in functions and code generation.
-msse4a Support MMX, SSE, SSE2, SSE3 and SSE4A built-in
functions and code generation.
-msse5 Same as -mavx. Use the latter option instead.
Uses of this option are diagnosed.
-msseregparm Use SSE register passing conventions for SF and
DF mode.
-mssse3 Support MMX, SSE, SSE2, SSE3 and SSSE3 built-in
functions and code generation.
-mstack-arg-probe Enable stack probing.
-mstack-protector-guard= Use given stack-protector guard.
-mstackrealign Realign stack in prologue.
-mstringop-strategy= Chose strategy to generate stringop using.
-mstv Disable Scalar to Vector optimization pass
transforming 64-bit integer computations into a
vector ones.
-mtbm Support TBM built-in functions and code
generation.
-mthreads Use Mingw-specific thread support.
-mtls-dialect= Use given thread-local storage dialect.
-mtls-direct-seg-refs Use direct references against %gs when accessing
tls data.
-mtune-ctrl= Fine grain control of tune features.
-mtune= Schedule code for given CPU.
-municode Use unicode startup and define UNICODE macro.
-mveclibabi= Vector library ABI to use.
-mvect8-ret-in-mem Return 8-byte vectors in memory.
-mvzeroupper Generate vzeroupper instruction before a transfer
of control flow out of the function.
-mwin32 Set Windows defines.
-mwindows Create GUI application.
-mx32 Generate 32bit x86-64 code.
-mxop Support XOP built-in functions and code
generation.
-mxsave Support XSAVE and XRSTOR instructions.
-mxsavec Support XSAVEC instructions.
-mxsaveopt Support XSAVEOPT instruction.
-mxsaves Support XSAVES and XRSTORS instructions.
Known assembler dialects (for use with the -masm-dialect= option):
att intel
Known ABIs (for use with the -mabi= option):
ms sysv
Known code models (for use with the -mcmodel= option):
32 kernel large medium small
Valid arguments to -mfpmath=:
387 387+sse 387,sse both sse sse+387 sse,387
Known data alignment choices (for use with the -malign-data= option):
abi cacheline compat
Known vectorization library ABIs (for use with the -mveclibabi= option):
acml svml
Known address mode (for use with the -maddress-mode= option):
long short
Known stack protector guard (for use with the -mstack-protector-guard= option):
global tls
Valid arguments to -mstringop-strategy=:
byte_loop libcall loop rep_4byte rep_8byte rep_byte unrolled_loop
vector_loop
Known TLS dialects (for use with the -mtls-dialect= option):
gnu gnu2
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MinGW v6.1.0 64-bit Options - Group 13
The following options are language-independent:
--debug Same as -g. Use the latter option instead.
--dumpbase Same as -dumpbase. Use the latter option instead.
--dumpdir Same as -dumpdir. Use the latter option instead.
--help Display this information.
--help= Display descriptions of a specific class of
options. is one or more of optimizers,
target, warnings, undocumented, params.
--optimize Same as -O. Use the latter option instead.
--param
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MinGW v6.1.0 64-bit Options - Group 14
-g Generate debug information in default format.
-gcoff Generate debug information in COFF format.
-gdwarf Generate debug information in default version of
DWARF format.
-gdwarf- Generate debug information in DWARF v2 (or later)
format.
-ggdb Generate debug information in default extended
format.
-ggnu-pubnames Generate DWARF pubnames and pubtypes sections
with GNU extensions.
-gno-pubnames Don't generate DWARF pubnames and pubtypes
sections.
-gno-record-gcc-switches Don't record gcc command line switches in DWARF
DW_AT_producer.
-gno-split-dwarf Don't generate debug information in separate .dwo
files.
-gno-strict-dwarf Emit DWARF additions beyond selected version.
-gpubnames Generate DWARF pubnames and pubtypes sections.
-grecord-gcc-switches Record gcc command line switches in DWARF
DW_AT_producer.
-gsplit-dwarf Generate debug information in separate .dwo files.
-gstabs Generate debug information in STABS format.
-gstabs+ Generate debug information in extended STABS
format.
-gstrict-dwarf Don't emit DWARF additions beyond selected
version.
-gtoggle Toggle debug information generation.
-gvms Generate debug information in VMS format.
-gxcoff Generate debug information in XCOFF format.
-gxcoff+ Generate debug information in extended XCOFF
format.
-gz Generate compressed debug sections.
-gz= Generate compressed debug sections in format
.
-imultiarch Set to be the multiarch include
subdirectory.
-iplugindir= Set to be the default plugin directory.
-p Enable function profiling.
-pedantic-errors Like -pedantic but issue them as errors.
-quiet Do not display functions compiled or elapsed time.
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MinGW v6.1.0 64-bit Options - Group 15
Usage: C:/WorkLib/MinGW/Bin/../lib/gcc/x86_64-w64-mingw32/6.1.0/../../../../x86_64-w64-mingw32/bin/as.exe [option...] [asmfile...]
Options:
-a[sub-option...] turn on listings
Sub-options [default hls]:
c omit false conditionals
d omit debugging directives
g include general info
h include high-level source
l include assembly
m include macro expansions
n omit forms processing
s include symbols
=FILE list to FILE (must be last sub-option)
--alternate initially turn on alternate macro syntax
--compress-debug-sections
compress DWARF debug sections using zlib
--nocompress-debug-sections
don't compress DWARF debug sections
-D produce assembler debugging messages
--debug-prefix-map OLD=NEW
map OLD to NEW in debug information
--defsym SYM=VAL define symbol SYM to given value
-f skip whitespace and comment preprocessing
-g --gen-debug generate debugging information
--gstabs generate STABS debugging information
--gstabs+ generate STABS debug info with GNU extensions
--gdwarf-2 generate DWARF2 debugging information
--gdwarf-sections generate per-function section names for DWARF line information
--hash-size= set the hash table size close to
--help show this message and exit
--target-help show target specific options
-I DIR add DIR to search list for .include directives
-J don't warn about signed overflow
-K warn when differences altered for long displacements
-L,--keep-locals keep local symbols (e.g. starting with `L')
-M,--mri assemble in MRI compatibility mode
--MD FILE write dependency information in FILE (default none)
-nocpp ignored
-o OBJFILE name the object-file output OBJFILE (default a.out)
-R fold data section into text section
--reduce-memory-overheads
prefer smaller memory use at the cost of longer
assembly times
--statistics print various measured statistics from execution
--strip-local-absolute strip local absolute symbols
--traditional-format Use same format as native assembler when possible
--version print assembler version number and exit
-W --no-warn suppress warnings
--warn don't suppress warnings
--fatal-warnings treat warnings as errors
-w ignored
-X ignored
-Z generate object file even after errors
--listing-lhs-width set the width in words of the output data column of
the listing
--listing-lhs-width2 set the width in words of the continuation lines
of the output data column; ignored if smaller than
the width of the first line
--listing-rhs-width set the max width in characters of the lines from
the source file
--listing-cont-lines set the maximum number of continuation lines used
for the output data column of the listing
@FILE read options from FILE
-n Do not optimize code alignment
-q quieten some warnings
--32/--64/--x32 generate 32bit/64bit/x32 code
--divide ignored
-march=CPU[,+EXTENSION...]
generate code for CPU and EXTENSION, CPU is one of:
generic32, generic64, i386, i486, i586, i686,
pentium, pentiumpro, pentiumii, pentiumiii, pentium4,
prescott, nocona, core, core2, corei7, l1om, k1om,
k6, k6_2, athlon, opteron, k8, amdfam10, bdver1,
bdver2, bdver3, bdver4, btver1, btver2
EXTENSION is combination of:
8087, 287, 387, no87, mmx, nommx, sse, sse2, sse3,
ssse3, sse4.1, sse4.2, sse4, nosse, avx, avx2,
avx512f, avx512cd, avx512er, avx512pf, avx512dq,
avx512bw, avx512vl, noavx, vmx, vmfunc, smx, xsave,
xsaveopt, xsavec, xsaves, aes, pclmul, fsgsbase,
rdrnd, f16c, bmi2, fma, fma4, xop, lwp, movbe, cx16,
ept, lzcnt, hle, rtm, invpcid, clflush, nop, syscall,
rdtscp, 3dnow, 3dnowa, padlock, svme, sse4a, abm,
bmi, tbm, adx, rdseed, prfchw, smap, mpx, sha,
clflushopt, prefetchwt1, se1, clwb, pcommit,
avx512ifma, avx512vbmi
-mtune=CPU optimize for CPU, CPU is one of:
generic32, generic64, i8086, i186, i286, i386, i486,
i586, i686, pentium, pentiumpro, pentiumii,
pentiumiii, pentium4, prescott, nocona, core, core2,
corei7, l1om, k1om, k6, k6_2, athlon, opteron, k8,
amdfam10, bdver1, bdver2, bdver3, bdver4, btver1,
btver2
-msse2avx encode SSE instructions with VEX prefix
-msse-check=[none|error|warning]
check SSE instructions
-moperand-check=[none|error|warning]
check operand combinations for validity
-mavxscalar=[128|256] encode scalar AVX instructions with specific vector
length
-mevexlig=[128|256|512] encode scalar EVEX instructions with specific vector
length
-mevexwig=[0|1] encode EVEX instructions with specific EVEX.W value
for EVEX.W bit ignored instructions
-mevexrcig=[rne|rd|ru|rz]
encode EVEX instructions with specific EVEX.RC value
for SAE-only ignored instructions
-mmnemonic=[att|intel] use AT&T/Intel mnemonic
-msyntax=[att|intel] use AT&T/Intel syntax
-mindex-reg support pseudo index registers
-mnaked-reg don't require `%' prefix for registers
-mold-gcc support old (<= 2.8.1) versions of gcc
-madd-bnd-prefix add BND prefix for all valid branches
-mbig-obj generate big object files
-momit-lock-prefix=[no|yes]
strip all lock prefixes
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MinGW v6.1.0 64-bit Options - Group 16
Report bugs to <>
Usage: collect2 [options]
Wrap linker and generate constructor code if needed.
Options:
-debug Enable debug output
--help Display this information
-v, --version Display this program's version number
Overview: http://gcc.gnu.org/onlinedocs/gccint/Collect2.html
Report bugs: <>
Usage: C:/WorkLib/MinGW/Bin/../lib/gcc/x86_64-w64-mingw32/6.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe [options] file...
Options:
-a KEYWORD Shared library control for HP/UX compatibility
-A ARCH, --architecture ARCH
Set architecture
-b TARGET, --format TARGET Specify target for following input files
-c FILE, --mri-script FILE Read MRI format linker script
-d, -dc, -dp Force common symbols to be defined
-e ADDRESS, --entry ADDRESS Set start address
-E, --export-dynamic Export all dynamic symbols
--no-export-dynamic Undo the effect of --export-dynamic
-EB Link big-endian objects
-EL Link little-endian objects
-f SHLIB, --auxiliary SHLIB Auxiliary filter for shared object symbol table
-F SHLIB, --filter SHLIB Filter for shared object symbol table
-g Ignored
-G SIZE, --gpsize SIZE Small data size (if no size, same as --shared)
-h FILENAME, -soname FILENAME
Set internal name of shared library
-I PROGRAM, --dynamic-linker PROGRAM
Set PROGRAM as the dynamic linker to use
-l LIBNAME, --library LIBNAME
Search for library LIBNAME
-L DIRECTORY, --library-path DIRECTORY
Add DIRECTORY to library search path
--sysroot= Override the default sysroot location
-m EMULATION Set emulation
-M, --print-map Print map file on standard output
-n, --nmagic Do not page align data
-N, --omagic Do not page align data, do not make text readonly
--no-omagic Page align data, make text readonly
-o FILE, --output FILE Set output file name
-O Optimize output file
-plugin PLUGIN Load named plugin
-plugin-opt ARG Send arg to last-loaded plugin
-flto Ignored for GCC LTO option compatibility
-flto-partition= Ignored for GCC LTO option compatibility
-fuse-ld= Ignored for GCC linker option compatibility
-Qy Ignored for SVR4 compatibility
-q, --emit-relocs Generate relocations in final output
-r, -i, --relocatable Generate relocatable output
-R FILE, --just-symbols FILE
Just link symbols (if directory, same as --rpath)
-s, --strip-all Strip all symbols
-S, --strip-debug Strip debugging symbols
--strip-discarded Strip symbols in discarded sections
--no-strip-discarded Do not strip symbols in discarded sections
-t, --trace Trace file opens
-T FILE, --script FILE Read linker script
--default-script FILE, -dT Read default linker script
-u SYMBOL, --undefined SYMBOL
Start with undefined reference to SYMBOL
--unique [=SECTION] Don't merge input [SECTION | orphan] sections
-Ur Build global constructor/destructor tables
-v, --version Print version information
-V Print version and emulation information
-x, --discard-all Discard all local symbols
-X, --discard-locals Discard temporary local symbols (default)
--discard-none Don't discard any local symbols
-y SYMBOL, --trace-symbol SYMBOL
Trace mentions of SYMBOL
-Y PATH Default search path for Solaris compatibility
-(, --start-group Start a group
-), --end-group End a group
--accept-unknown-input-arch Accept input files whose architecture cannot be determined
--no-accept-unknown-input-arch
Reject input files whose architecture is unknown
--as-needed Only set DT_NEEDED for following dynamic libs if used
--no-as-needed Always set DT_NEEDED for dynamic libraries mentioned on
the command line
-assert KEYWORD Ignored for SunOS compatibility
-Bdynamic, -dy, -call_shared
Link against shared libraries
-Bstatic, -dn, -non_shared, -static
Do not link against shared libraries
-Bsymbolic Bind global references locally
-Bsymbolic-functions Bind global function references locally
--check-sections Check section addresses for overlaps (default)
--no-check-sections Do not check section addresses for overlaps
--copy-dt-needed-entries Copy DT_NEEDED links mentioned inside DSOs that follow
--no-copy-dt-needed-entries Do not copy DT_NEEDED links mentioned inside DSOs that follow
--cref Output cross reference table
--defsym SYMBOL=EXPRESSION Define a symbol
--demangle [=STYLE] Demangle symbol names [using STYLE]
--embedded-relocs Generate embedded relocs
--fatal-warnings Treat warnings as errors
--no-fatal-warnings Do not treat warnings as errors (default)
-fini SYMBOL Call SYMBOL at unload-time
--force-exe-suffix Force generation of file with .exe suffix
--gc-sections Remove unused sections (on some targets)
--no-gc-sections Don't remove unused sections (default)
--print-gc-sections List removed unused sections on stderr
--no-print-gc-sections Do not list removed unused sections
--hash-size= Set default hash table size close to
--help Print option help
-init SYMBOL Call SYMBOL at load-time
-Map FILE Write a map file
--no-define-common Do not define Common storage
--no-demangle Do not demangle symbol names
--no-keep-memory Use less memory and more disk I/O
--no-undefined Do not allow unresolved references in object files
--allow-shlib-undefined Allow unresolved references in shared libraries
--no-allow-shlib-undefined Do not allow unresolved references in shared libs
--allow-multiple-definition Allow multiple definitions
--no-undefined-version Disallow undefined version
--default-symver Create default symbol version
--default-imported-symver Create default symbol version for imported symbols
--no-warn-mismatch Don't warn about mismatched input files
--no-warn-search-mismatch Don't warn on finding an incompatible library
--no-whole-archive Turn off --whole-archive
--noinhibit-exec Create an output file even if errors occur
-nostdlib Only use library directories specified on
the command line
--oformat TARGET Specify target of output file
--print-output-format Print default output format
--print-sysroot Print current sysroot
-qmagic Ignored for Linux compatibility
--reduce-memory-overheads Reduce memory overheads, possibly taking much longer
--relax Reduce code size by using target specific optimizations
--no-relax Do not use relaxation techniques to reduce code size
--retain-symbols-file FILE Keep only symbols listed in FILE
-rpath PATH Set runtime shared library search path
-rpath-link PATH Set link time shared library search path
-shared, -Bshareable Create a shared library
-pie, --pic-executable Create a position independent executable
--sort-common [=ascending|descending]
Sort common symbols by alignment [in specified order]
--sort-section name|alignment
Sort sections by name or maximum alignment
--spare-dynamic-tags COUNT How many tags to reserve in .dynamic section
--split-by-file [=SIZE] Split output sections every SIZE octets
--split-by-reloc [=COUNT] Split output sections every COUNT relocs
--stats Print memory usage statistics
--target-help Display target specific options
--task-link SYMBOL Do task level linking
--traditional-format Use same format as native linker
--section-start SECTION=ADDRESS
Set address of named section
-Tbss ADDRESS Set address of .bss section
-Tdata ADDRESS Set address of .data section
-Ttext ADDRESS Set address of .text section
-Ttext-segment ADDRESS Set address of text segment
-Trodata-segment ADDRESS Set address of rodata segment
-Tldata-segment ADDRESS Set address of ldata segment
--unresolved-symbols=
How to handle unresolved symbols. is:
ignore-all, report-all, ignore-in-object-files,
ignore-in-shared-libs
--verbose [=NUMBER] Output lots of information during link
--version-script FILE Read version information script
--version-exports-section SYMBOL
Take export symbols list from .exports, using
SYMBOL as the version.
--dynamic-list-data Add data symbols to dynamic list
--dynamic-list-cpp-new Use C++ operator new/delete dynamic list
--dynamic-list-cpp-typeinfo Use C++ typeinfo dynamic list
--dynamic-list FILE Read dynamic list
--warn-common Warn about duplicate common symbols
--warn-constructors Warn if global constructors/destructors are seen
--warn-multiple-gp Warn if the multiple GP values are used
--warn-once Warn only once per undefined symbol
--warn-section-align Warn if start of section changes due to alignment
--warn-shared-textrel Warn if shared object has DT_TEXTREL
--warn-alternate-em Warn if an object has alternate ELF machine code
--warn-unresolved-symbols Report unresolved symbols as warnings
--error-unresolved-symbols Report unresolved symbols as errors
--whole-archive Include all objects from following archives
--wrap SYMBOL Use wrapper functions for SYMBOL
--ignore-unresolved-symbol SYMBOL
Unresolved SYMBOL will not cause an error or warning
--push-state Push state of flags governing input file handling
--pop-state Pop state of flags governing input file handling
@FILE Read options from FILE
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MinGW v6.1.0 64-bit Options - Group 17
C:/WorkLib/MinGW/Bin/../lib/gcc/x86_64-w64-mingw32/6.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: supported targets: pe-x86-64 pei-x86-64 pe-bigobj-x86-64 elf64-x86-64 elf64-l1om elf64-k1om pe-i386 pei-i386 elf32-i386 elf64-little elf64-big elf32-little elf32-big plugin srec symbolsrec verilog tekhex binary ihex
C:/WorkLib/MinGW/Bin/../lib/gcc/x86_64-w64-mingw32/6.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: supported emulations: i386pep i386pe
C:/WorkLib/MinGW/Bin/../lib/gcc/x86_64-w64-mingw32/6.1.0/../../../../x86_64-w64-mingw32/bin/ld.exe: emulation specific options:
i386pep:
--base_file Generate a base file for relocatable DLLs
--dll Set image base to the default for DLLs
--file-alignment Set file alignment
--heap Set initial size of the heap
--image-base Set start address of the executable
--major-image-version Set version number of the executable
--major-os-version Set minimum required OS version
--major-subsystem-version Set minimum required OS subsystem version
--minor-image-version Set revision number of the executable
--minor-os-version Set minimum required OS revision
--minor-subsystem-version Set minimum required OS subsystem revision
--section-alignment Set section alignment
--stack Set size of the initial stack
--subsystem [:] Set required OS subsystem [& version]
--support-old-code Support interworking with old code
--[no-]leading-underscore Set explicit symbol underscore prefix mode
--[no-]insert-timestamp Use a real timestamp rather than zero. (default)
This makes binaries non-deterministic
--add-stdcall-alias Export symbols with and without @nn
--disable-stdcall-fixup Don't link _sym to _sym@nn
--enable-stdcall-fixup Link _sym to _sym@nn without warnings
--exclude-symbols sym,sym,... Exclude symbols from automatic export
--exclude-all-symbols Exclude all symbols from automatic export
--exclude-libs lib,lib,... Exclude libraries from automatic export
--exclude-modules-for-implib mod,mod,...
Exclude objects, archive members from auto
export, place into import library instead.
--export-all-symbols Automatically export all globals to DLL
--kill-at Remove @nn from exported symbols
--out-implib Generate import library
--output-def Generate a .DEF file for the built DLL
--warn-duplicate-exports Warn about duplicate exports.
--compat-implib Create backward compatible import libs;
create __imp_ as well.
--enable-auto-image-base Automatically choose image base for DLLs
unless user specifies one
--disable-auto-image-base Do not auto-choose image base. (default)
--dll-search-prefix= When linking dynamically to a dll without
an importlib, use .dll
in preference to lib.dll
--enable-auto-import Do sophisticated linking of _sym to
__imp_sym for DATA references
--disable-auto-import Do not auto-import DATA items from DLLs
--enable-runtime-pseudo-reloc Work around auto-import limitations by
adding pseudo-relocations resolved at
runtime.
--disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for
auto-imported DATA.
--enable-extra-pep-debug Enable verbose debug output when building
or linking to DLLs (esp. auto-import)
--enable-long-section-names Use long COFF section names even in
executable image files
--disable-long-section-names Never use long COFF section names, even
in object files
--high-entropy-va Image is compatible with 64-bit address space
layout randomization (ASLR)
--dynamicbase Image base address may be relocated using
address space layout randomization (ASLR)
--forceinteg Code integrity checks are enforced
--nxcompat Image is compatible with data execution prevention
--no-isolation Image understands isolation but do not isolate the image
--no-seh Image does not use SEH. No SE handler may
be called in this image
--no-bind Do not bind this image
--wdmdriver Driver uses the WDM model
--tsaware Image is Terminal Server aware
--build-id[=STYLE] Generate build ID
i386pe:
--base_file Generate a base file for relocatable DLLs
--dll Set image base to the default for DLLs
--file-alignment Set file alignment
--heap Set initial size of the heap
--image-base Set start address of the executable
--major-image-version Set version number of the executable
--major-os-version Set minimum required OS version
--major-subsystem-version Set minimum required OS subsystem version
--minor-image-version Set revision number of the executable
--minor-os-version Set minimum required OS revision
--minor-subsystem-version Set minimum required OS subsystem revision
--section-alignment Set section alignment
--stack Set size of the initial stack
--subsystem [:] Set required OS subsystem [& version]
--support-old-code Support interworking with old code
--[no-]leading-underscore Set explicit symbol underscore prefix mode
--thumb-entry= Set the entry point to be Thumb
--[no-]insert-timestamp Use a real timestamp rather than zero (default).
This makes binaries non-deterministic
--add-stdcall-alias Export symbols with and without @nn
--disable-stdcall-fixup Don't link _sym to _sym@nn
--enable-stdcall-fixup Link _sym to _sym@nn without warnings
--exclude-symbols sym,sym,... Exclude symbols from automatic export
--exclude-all-symbols Exclude all symbols from automatic export
--exclude-libs lib,lib,... Exclude libraries from automatic export
--exclude-modules-for-implib mod,mod,...
Exclude objects, archive members from auto
export, place into import library instead.
--export-all-symbols Automatically export all globals to DLL
--kill-at Remove @nn from exported symbols
--out-implib Generate import library
--output-def Generate a .DEF file for the built DLL
--warn-duplicate-exports Warn about duplicate exports
--compat-implib Create backward compatible import libs;
create __imp_ as well.
--enable-auto-image-base[=] Automatically choose image base for DLLs
(optionally starting with address) unless
specifically set with --image-base
--disable-auto-image-base Do not auto-choose image base. (default)
--dll-search-prefix= When linking dynamically to a dll without
an importlib, use .dll
in preference to lib.dll
--enable-auto-import Do sophisticated linking of _sym to
__imp_sym for DATA references
--disable-auto-import Do not auto-import DATA items from DLLs
--enable-runtime-pseudo-reloc Work around auto-import limitations by
adding pseudo-relocations resolved at
runtime.
--disable-runtime-pseudo-reloc Do not add runtime pseudo-relocations for
auto-imported DATA.
--enable-extra-pe-debug Enable verbose debug output when building
or linking to DLLs (esp. auto-import)
--large-address-aware Executable supports virtual addresses
greater than 2 gigabytes
--disable-large-address-aware Executable does not support virtual
addresses greater than 2 gigabytes
--enable-long-section-names Use long COFF section names even in
executable image files
--disable-long-section-names Never use long COFF section names, even
in object files
--dynamicbase Image base address may be relocated using
address space layout randomization (ASLR)
--forceinteg Code integrity checks are enforced
--nxcompat Image is compatible with data execution prevention
--no-isolation Image understands isolation but do not isolate the image
--no-seh Image does not use SEH. No SE handler may
be called in this image
--no-bind Do not bind this image
--wdmdriver Driver uses the WDM model
--tsaware Image is Terminal Server aware
--build-id[=STYLE] Generate build ID
Report bugs to <>
For bug reporting instructions, please see:
<>
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[ A message to IDZ Forums Moderator ]
Please correct the thread title and remove '***'. After your correction the thread title should look like:
Evolution of Command Line options of different C++ compilers
That is, no '***' at the beginning and at the end of the title.
Thanks in advance.
Reply
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