Link problem on Ubuntu 10.04

[Robert_Bielik]

Hi all, I have a CMake based crossplatform application which uses MKL, and builds on Windows/OSX and Linux. On the latter, I have one link problem left:

/opt/intel/mkl/lib/ia32/libmkl_core.a(_def_dfti_create_srmd.o): In function `commit':

../../../../dft/kernel/0ref/dfti_create_srmd.c:(.text+0x15): undefined reference to `mkl_dft_commit_node_s_r2c_md_omp'

/opt/intel/mkl/lib/ia32/libmkl_core.a(_def_dfti_create_srmd.o): In function `commit':../../../../dft/kernel/0ref/dfti_create_srmd.c:(.text+0x15): undefined reference to `mkl_dft_commit_node_s_r2c_md_omp'

[...snip...]

What library am I missing ? The libraries linked to are (output from the FindMKL.cmake script):

-- MKL_LIBRARIES: /opt/intel/mkl/lib/ia32/libmkl_intel.a;/opt/intel/mkl/lib/ia32/libmkl_intel_thread.a;/opt/intel/mkl/lib/ia32/libmkl_core.a;/opt/intel/lib/ia32/libiomp5.a;/opt/intel/mkl/lib/ia32/libmkl_cdft_core.a

Help ? :)

TIA

/Rob

[barragan_villanueva_]

Hi,

To link with MKL static libraries on Linux it needs to use -Wl,--start-group ... -Wl,--end-group ld-options.
Please use Intel MKL Link Line Advisor

[Robert_Bielik]

Problem is how to specify that with CMakeLists.txt files...

[Robert_Bielik]

Or rather, which library contains symbol 'mkl_dft_commit_node_s_r2c_md_omp' ??

TIA

/Rob

[Robert_Bielik]

Actually I solved it by enclosing my libraries using MKL, and the MKL libraries within the start-group, end-group like so:

TARGET_LINK_LIBRARIES(Application -Wl,--start-group MyLibA MyLibB ${MKL_LIBRARIES} -Wl,--end-group)

and that seems to take care of things :)

/Rob

[Gennady_F_Intel]

that's exactly what Victor ( post #1) recommended to do and Linker Adviser recommend the similar things