Is mkl_tbb_thread.lib for /MT option?

[Kohn-Sham]

Hi.

I found that mkl_tbb_thread.lib is linked  to msvcrt.lib which is /MD correspondent CRT as described in C runtime (CRT) and C++ standard library (STL) .lib files 

Maybe this library should be linked to libcmt.lib if it is for /MT CRT.

In other view, for as file naming, in mkl/2025.0/lib folder, there are tbb_thread libs as follow.

    mkl_tbb_thread.lib

    mkl_tbb_thread_dll.lib

    mkl_tbb_threadd.lib

    mkl_tbb_threadd_dll.lib

Filename looks like that each libs should be linked to /MT /MD /MTd /MDd each.

<environment>

oneapi 2025.0

windows 10

<reproducer>

Im trying to building in release config with /MT flag.

Im using onemkl with onetbb so, i set CMakeLists.txt as

    set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded)

    set(MKL_THREADING tbb_thread)

and

    F1 > CMake: Select Variant > Release in vscode 

During linking, following error raised

mkl_tbb_thread.lib(bless_node_tbb.obj) : error LNK2038: mismatch detected for 'RuntimeLibrary': value 'MD_DynamicRelease' doesn't match value 'MT_StaticRelease' in main.cpp.obj

<dumpbin>

I dumped the mkl_tbb_thread.lib file and found 

Linker Directives
-----------------
/DEFAULTLIB:tbb12.lib
/DEFAULTLIB:msvcprt.lib
/FAILIFMISMATCH:RuntimeLibrary=MD_DynamicRelease
/FAILIFMISMATCH:_CRT_STDIO_ISO_WIDE_SPECIFIERS=0

[Ruqiu_C_Intel]

Have you added all the 4 libs below in your static linking?

mkl_intel_lp64.lib mkl_tbb_thread.lib mkl_core.lib tbb12.lib 

[Kohn-Sham]

After read reply, I tried link 4 libs manually, but same link error raised.

I tried as below.

1.  CMakeLists.txt

cmake_minimum_required(VERSION 3.28.0)
project(link_bug_test VERSION 0.0.0 LANGUAGES C CXX)
if(NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
    set(${PROJECT_NAME}_FOUND TRUE PARENT_SCOPE)
endif()
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED true)
set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded)

find_package(TBB REQUIRED COMPONENTS tbb tbbmalloc)
set(MKL_LINK static)
set(MKL_THREADING tbb_thread)
set(MKL_INTERFACE lp64)
find_package(MKL CONFIG REQUIRED PATHS $ENV{MKLROOT})

add_executable(link_bug_test
    main.cpp
)
target_link_libraries(link_bug_test
    PRIVATE TBB::tbb TBB::tbbmalloc
    PRIVATE mkl_intel_lp64 mkl_tbb_thread mkl_core tbb12 
    # PRIVATE MKL::MKL
)

2. main.cpp

#include <mkl.h>
#include <oneapi/tbb.h>


int main(){
    size_t N{65536};
    float dt{1e-3};
    MKL_Complex8* arr=(MKL_Complex8*)mkl_malloc(N*8,64);
    for(size_t i=0;i<N;++i){
        arr[i].real=sin(0.01*dt);
        arr[i].imag=0;
    }


    DFTI_DESCRIPTOR_HANDLE fft_hand;
    DftiCreateDescriptor(&fft_hand,DFTI_SINGLE,DFTI_COMPLEX,1,N);
    DftiCommitDescriptor(fft_hand);
    DftiComputeForward(fft_hand,arr);

    oneapi::tbb::parallel_for(oneapi::tbb::blocked_range<size_t>(0,100000),[&](const oneapi::tbb::blocked_range<size_t>& r){
        for(size_t i=r.begin();i!=r.end();i++){
            arr[i].imag=0;
        }
    });


    mkl_free(arr);
    return ;
}

3. Configure 

Used vscode command 

 F1 > CMake: Configure

Following was executed.

cmake.exe -DCMAKE_BUILD_TYPE:STRING=Release -DCMAKE_EXPORT_COMPILE_COMMANDS:BOOL=TRUE -DCMAKE_C_COMPILER:FILEPATH=icx -DCMAKE_CXX_COMPILER:FILEPATH=icx --no-warn-unused-cli -SC:/link_bug_test -Bc:/link_bug_test/build -G Ninja

4. Build

Used vscode command

 F1 > CMake: Build

Following was executed

[build] Starting build
[proc] Executing command: "C:\Program Files\Microsoft Visual Studio\2022\Professional\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" --build c:/link_bug_test/build --config Release --target all --

5. Result error

[build] [2/2 100% :: 2.647] Linking CXX executable link_bug_test.exe
[build] FAILED: link_bug_test.exe 
[build] C:\Windows\system32\cmd.exe /C "cd . && "C:\Program Files\Microsoft Visual Studio\2022\Professional\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe" -E vs_link_exe --intdir=CMakeFiles\link_bug_test.dir --rc=C:\PROGRA~2\WI3CF2~1\10\bin\100226~1.0\x64\rc.exe --mt=C:\PROGRA~2\WI3CF2~1\10\bin\100226~1.0\x64\mt.exe --manifests  -- C:\PROGRA~2\Intel\oneAPI\compiler\latest\bin\icx.exe /nologo CMakeFiles\link_bug_test.dir\main.cpp.obj  /Qoption,link,/machine:x64 /Qoption,link,/INCREMENTAL:NO /Qoption,link,/subsystem:console  "C:\Program Files (x86)\Intel\oneAPI\tbb\latest\lib\tbb12.lib"  "C:\Program Files (x86)\Intel\oneAPI\tbb\latest\lib\tbbmalloc.lib"  mkl_intel_lp64.lib  mkl_tbb_thread.lib  mkl_core.lib  tbb12.lib  kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib /link /out:link_bug_test.exe /implib:link_bug_test.lib /pdb:link_bug_test.pdb /version:0.0 && cd ."
[build] LINK: command "C:\PROGRA~2\Intel\oneAPI\compiler\latest\bin\icx.exe /nologo CMakeFiles\link_bug_test.dir\main.cpp.obj /Qoption,link,/machine:x64 /Qoption,link,/INCREMENTAL:NO /Qoption,link,/subsystem:console C:\Program Files (x86)\Intel\oneAPI\tbb\latest\lib\tbb12.lib C:\Program Files (x86)\Intel\oneAPI\tbb\latest\lib\tbbmalloc.lib mkl_intel_lp64.lib mkl_tbb_thread.lib mkl_core.lib tbb12.lib kernel32.lib user32.lib gdi32.lib winspool.lib shell32.lib ole32.lib oleaut32.lib uuid.lib comdlg32.lib advapi32.lib /link /out:link_bug_test.exe /implib:link_bug_test.lib /pdb:link_bug_test.pdb /version:0.0 /MANIFEST:EMBED,ID=1" failed (exit code 1319) with the following output:
[build] mkl_tbb_thread.lib(bless_node_tbb.obj) : error LNK2038: mismatch detected for 'RuntimeLibrary': value 'MD_DynamicRelease' doesn't match value 'MT_StaticRelease' in main.cpp.obj
[build] link_bug_test.exe : fatal error LNK1319: 1 mismatches detected
[build] icx: error: linker command failed with exit code 1319 (use -v to see invocation)
[build] ninja: build stopped: subcommand failed.

I tried linking at reporting this bug as follow.

cmake_minimum_required(VERSION 3.28.0)
project(link_bug_test VERSION 0.0.0 LANGUAGES C CXX)
if(NOT CMAKE_SOURCE_DIR STREQUAL CMAKE_CURRENT_SOURCE_DIR)
    set(${PROJECT_NAME}_FOUND TRUE PARENT_SCOPE)
endif()
set(CMAKE_CXX_STANDARD 20)
set(CMAKE_CXX_STANDARD_REQUIRED true)
set(CMAKE_MSVC_RUNTIME_LIBRARY MultiThreaded)

find_package(TBB REQUIRED COMPONENTS tbb tbbmalloc)
set(MKL_LINK static)
set(MKL_THREADING tbb_thread)
set(MKL_INTERFACE lp64)
find_package(MKL CONFIG REQUIRED PATHS $ENV{MKLROOT})

add_executable(link_bug_test
    main.cpp
)
target_link_libraries(link_bug_test
    PRIVATE TBB::tbb TBB::tbbmalloc
    PRIVATE MKL::MKL
)

which is normal when linking MKL with CMake.

[Aleksandra_K]

Hi,

I wanted to let you know that I've reproduced the issue you mentioned, and we're working on fixing it. I'll keep you posted with any updates.

Thanks,

Aleksandra

[Kohn-Sham]

Hi,

Thank you for news of progress!

[Aleksandra_K · Accepted solution]

Hi,

We investigated the issue and it's not a bug. The naming convention of static .lib and dynamic _dll.lib libraries is more of a clue for the used when linking to MKL, that is mkl_tbb_thread.lib should be linked statically while mkl_tbb_thread_dll.lib should be linked dynamically. However, a static library can be linked to C runtime dynamically as the static library does not dictate how the C runtime is linked.

For further details on how to link to MKL please refer to Link Line Advisor for Intel® oneAPI Math Kernel Library

Regards,

Aleksandra

[Kohn-Sham]

Hi,

I appreciate your feedback.

I realized the my misunderstanding from your reply.

To summarize, linking static libraries to dynamic CRT(/MT, /MTd for MSVC) is also normal.

Also, MKL and TBB are linked to dynamic CRT for both static(<lib_name>.lib) and dynamic(<lib_name>_dll.lib) libraries.

Thank you again!