I have no idea why this would occur, but with CMake 2.8.2 on x86_64 I'm
getting strange behavior with check_function_exists. Namely, if I perform
the sequence
set(CMAKE_REQUIRED_LIBRARIES ${MATH_LIBS})
check_function_exists(daxpy HAVE_DAXPY)
whether or not /usr/lib/libpthread.a or /usr/lib/libpthread.so is in the
list changes the answer, even though daxpy is defined in a completely
different library!
Output with libpthread.so:
--
MATH_LIBS=/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_scalapack_lp64.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_blacs_lp64.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_intel_lp64.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_intel_thread.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_core.a;/opt/intel/Compiler/11.1/072/lib/intel64/libguide.a;/opt/intel/Compiler/11.1/072/lib/intel64/libiomp5.a;/usr/lib/libpthread.so
-- Looking for daxpy
-- Looking for daxpy - found
Output with libpthread.a:
--
MATH_LIBS=/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_scalapack_lp64.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_blacs_lp64.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_intel_lp64.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_intel_thread.a;/opt/intel/Compiler/11.1/072/mkl/lib/em64t/libmkl_core.a;/opt/intel/Compiler/11.1/072/lib/intel64/libguide.a;/opt/intel/Compiler/11.1/072/lib/intel64/libiomp5.a;/usr/lib/libpthread.a
-- Looking for daxpy
-- Looking for daxpy - not found
Any ideas what would be causing this strange behavior? And while I'm on the
subject, should check_function_exist work with dynamic libraries? I had to
give up some portability and force find_library to search for the static MKL
libraries just to get the libpthread.so case to work.
I apologize in advance if I've missed something obvious...
Jack
_______________________________________________
Powered by www.kitware.com
Visit other Kitware open-source projects at
http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the CMake FAQ at:
http://www.cmake.org/Wiki/CMake_FAQ
Follow this link to subscribe/unsubscribe:
http://www.cmake.org/mailman/listinfo/cmake
