openmp mingw undefined references

[sonoro1234]

Hi,
I am trying to compile fftw3_omp with cmake and mingw-w64 (32 bits)

cmake -G"MinGW Makefiles"  -DCMAKE_BUILD_TYPE=Release -DENABLE_FLOAT=off -DENABLE_SSE=on -DENABLE_SSE2=on -DENABLE_OPENMP=on  -DBUILD_TESTS=off   ../fftw-3.3.7

I get this linking errors

[100%] Linking C shared library libfftw3_omp.dll
CMakeFiles\fftw3_omp.dir/objects.a(api.c.obj):api.c:(.text+0x22): undefined reference to `fftw_mksolver_ct_hoo
k'
CMakeFiles\fftw3_omp.dir/objects.a(api.c.obj):api.c:(.text+0x2c): undefined reference to `fftw_mksolver_hc2hc_
hook'
CMakeFiles\fftw3_omp.dir/objects.a(api.c.obj):api.c:(.text+0x79): undefined reference to `fftw_mksolver_ct_hoo
k'
CMakeFiles\fftw3_omp.dir/objects.a(api.c.obj):api.c:(.text+0x83): undefined reference to `fftw_mksolver_hc2hc_
hook'
CMakeFiles\fftw3_omp.dir/objects.a(api.c.obj):api.c:(.text+0xc4): undefined reference to `fftw_imax'
CMakeFiles\fftw3_omp.dir/objects.a(api.c.obj):api.c:(.text+0xed): undefined reference to `fftw_mksolver_ct_hoo
k'
CMakeFiles\fftw3_omp.dir/objects.a(api.c.obj):api.c:(.text+0xf7): undefined reference to `fftw_mksolver_hc2hc_
hook'

Any idea?

thanks
victor bombi

[sonoro1234]

Also tried with msys mingw-w64 (32 bits)

 ./configure --with-our-malloc16 --with-windows-f77-mangling --enable-shared --disable-static --enable-openmp --enable-portable-binary --enable-sse2 --with-incoming-stack-boundary=2

but the error after make was:

/bin/sh ../libtool  --tag=CC   --mode=link gcc -std=gnu99 -mincoming-stack-boundary=2 -fopenmp -O3 -
fomit-frame-pointer -mtune=native -malign-double -fstrict-aliasing -fno-schedule-insns -ffast-math -
version-info 8:7:5  -o libfftw3_omp.la -rpath /usr/local/lib libfftw3_omp_la-api.lo libfftw3_omp_la-
conf.lo libfftw3_omp_la-openmp.lo libfftw3_omp_la-dft-vrank-geq1.lo libfftw3_omp_la-ct.lo libfftw3_o
mp_la-rdft-vrank-geq1.lo libfftw3_omp_la-hc2hc.lo libfftw3_omp_la-vrank-geq1-rdft2.lo libfftw3_omp_l
a-f77api.lo ../libfftw3.la -lm
libtool:   error: can't build i686-pc-mingw32 shared library unless -no-undefined is specified
make[2]: *** [libfftw3_omp.la] Error 1
make[2]: Leaving directory `/c/inpaint/fftw-3.3.7mingw/threads'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/c/inpaint/fftw-3.3.7mingw'
make: *** [all] Error 2

[sonoro1234]

with cmake it works if I modify CMakeLists.txt as

if (OPENMP_FOUND)
  add_library (${fftw3_lib}_omp ${SOURCEFILES} ${fftw_omp_SOURCE})
  if (HAVE_SSE)
  target_compile_options (${fftw3_lib}_omp PRIVATE ${SSE_FLAG})
endif ()
if (HAVE_SSE2)
  target_compile_options (${fftw3_lib}_omp PRIVATE ${SSE2_FLAG})
endif ()
  target_link_libraries (${fftw3_lib}_omp ${fftw3_lib})
  target_link_libraries (${fftw3_lib}_omp ${CMAKE_THREAD_LIBS_INIT})
  list (APPEND subtargets ${fftw3_lib}_omp)
  target_compile_options (${fftw3_lib}_omp PRIVATE ${OpenMP_C_FLAGS})
  set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} " -Wall ${OpenMP_C_FLAGS}")
endif ()

[umadevimcw]

@sonoro1234 I am also facing same issue with MINGW-64. Did you able to fix

libtool: error: build x86_64-w64-mingw32 shared library unless -no-undefined is specified

issue on Mingw-64 without using cmake?

[sonoro1234]

Sorry, i only tried cmake