topic Hi Shaojuan, in Intel® Integrated Performance Primitives

Problem using IPP 9.0 legacy libraries

Sid_Prosodie — Thu, 14 Jan 2016 17:06:21 GMT

I'm trying to update a library built with IPP 7.0 to the latest version, 9.0 Update 1. It used the IPP speech codec libippsc which has been removed from official IPP 9.0 product, so I downloaded and install the IPP 9.0 legacy libraries (available with 9.0 release).

I've updated the corresponding sources, it's compiling fine, but when doing [static] linking, I get some errors, conflict between libippsc90lgc and libippcore :I've reproduced below some interesting parts of the linking command and the resulting error messages :

/usr/bin/cc -fPIC -m64 -Wall -Wextra -Wbad-function-cast -Wstrict-prototypes -march=core2 -mfpmath=sse -pthread -g -O3 -D_XOPEN_SOURCE=600 -D_DEFAULT_SOURCE -D_BSD_SOURCE -DORTP_INET6 -DUSE_INTEL_IPP90LEGACY -DUSE_INTEL_IPP -DG729 [...] /opt/intel/ipp90legacy_lin/linux/lib/intel64/threaded/libippsc90lgc.a /opt/intel/ipp-9.0/ipp/lib/intel64/threaded/libipps.a /opt/intel/ipp-9.0/ipp/lib/intel64/threaded/libippcore.a -lcrypto -lpthread -lm -lortp -lrt -laio
/opt/intel/ipp-9.0/ipp/lib/intel64/threaded/libippcore.a(owncpufeatures.o): In function `ownGetMaskFeatures':
/localdisk/commander/production/ipp901gold/linux_intel64/sources/core/src/owncpufeatures.c:(.text+0x0): multiple definition of `ownGetMaskFeatures'
/opt/intel/ipp90legacy_lin/linux/lib/intel64/threaded/libippsc90lgc.a(owncpufeatures.o):/localdisk/commander/lgc90/sources/core/src/owncpufeatures.c:(.text+0x0): first defined here
/opt/intel/ipp-9.0/ipp/lib/intel64/threaded/libippcore.a(owncpufeatures.o): In function `ownGetFeature':
/localdisk/commander/production/ipp901gold/linux_intel64/sources/core/src/owncpufeatures.c:(.text+0x3c0): multiple definition of `ownGetFeature'
/opt/intel/ipp90legacy_lin/linux/lib/intel64/threaded/libippsc90lgc.a(owncpufeatures.o):/localdisk/commander/lgc90/sources/core/src/owncpufeatures.c:(.text+0x300): first defined here
/opt/intel/ipp-9.0/ipp/lib/intel64/threaded/libippcore.a(owncpufeatures.o): In function `ownSetFeatureMask':
/localdisk/commander/production/ipp901gold/linux_intel64/sources/core/src/owncpufeatures.c:(.text+0x3e0): multiple definition of `ownSetFeatureMask'
/opt/intel/ipp90legacy_lin/linux/lib/intel64/threaded/libippsc90lgc.a(owncpufeatures.o):/localdisk/commander/lgc90/sources/core/src/owncpufeatures.c:(.text+0x320): first defined here
/opt/intel/ipp-9.0/ipp/lib/intel64/threaded/libippcore.a(owncpufeatures.o): In function `ownMaskIsFeatures':
/localdisk/commander/production/ipp901gold/linux_intel64/sources/core/src/owncpufeatures.c:(.text+0x420): multiple definition of `ownMaskIsFeatures'
/opt/intel/ipp90legacy_lin/linux/lib/intel64/threaded/libippsc90lgc.a(owncpufeatures.o):/localdisk/commander/lgc90/sources/core/src/owncpufeatures.c:(.text+0x340): first defined here
collect2: error: ld returned 1 exit status

How could I fix this linking problem ?

Thanks.

Hi Sid,

Shaojuan_Z_Intel — Fri, 15 Jan 2016 20:14:03 GMT

Hi Sid,

Thanks for your information. What changes did you make in the sources?

Hi Shaojuan,

Sid_Prosodie — Mon, 18 Jan 2016 07:22:56 GMT

Hi Shaojuan,

I've added new include file from the IPP 90 legacy library (as described in documentation) :

#ifdef USE_INTEL_IPP90LEGACY
/* I know these fonctions are obsolete */
# define IPP_LEGACY_WRN ""

# include "ippsc90legacy.h"
#endif

I've also updated the 'usc' sample library from 7.0 to latest available, in 8.0, and added the same include file in these sources…

FYI, I' ve tried to change

Sid_Prosodie — Mon, 18 Jan 2016 07:52:37 GMT

FYI, I' ve tried to change the order of IPP libraries from : ipp90lgc - ipps - ippcore

to : ippcore - ipp90lgc - ipps

and the link edition runs now flawessly :-) I'll check now itf the resulting library is running well.

The change in library order

Sid_Prosodie — Mon, 18 Jan 2016 13:38:28 GMT

The change in library order was a bad idea, if the target library linking worked, I can't use it as required symbols were missing :-(

I've checked the 'readme.txt' from IPP 90 legacy package, and found I've forgotten to add the include "ippsc90legacy_redef.h" ; as I used also some legacy functions from IPP S library, I added also "ipps90legacy.h" and "ipps90legacy_redef.h".

Looking at Intel IPP 9.0 documentation, I saw I also need to add IPP VM module when using IPP S.

With all these updates, the library building is now OK, and also its use :-)

Thanks for your answer which drove me on the right track !

Hi!

Sergey_K_Intel — Mon, 18 Jan 2016 13:46:30 GMT

Hi!

Probably, you don't need to unclude redefs header files explicitly, because they are included in the corresponding "ipp*legacy.h" files.