CODEWITHSUNDEEP
gccclangmpiopenmpifftw
user906357
user906357

Reputation: 4695

Issue compiling FFTW

I am trying to install FFTW on my mac with OpenMP enabled. I initially had trouble configuring, but that issue was solved here.

Now after configuring I type "make" and I get the following error:

libtool: compile:  mpicc -DHAVE_CONFIG_H -I. -I.. -I../kernel -I../dft -I../rdft -I../api -I../tests -I../libbench2 -O3 -fomit-frame-pointer -mtune=native -malign-double -fstrict-aliasing -fno-schedule-insns -ffast-math -Wa,-q -Wl,-no_compact_unwind -MT any-true.lo -MD -MP -MF .deps/any-true.Tpo -c any-true.c -o any-true.o
clang: error: unknown argument: '-malign-double'
clang: warning: -Wl,-no_compact_unwind: 'linker' input unused
clang: error: unsupported argument '-q' to option 'Wa,'
clang: warning: optimization flag '-fno-schedule-insns' is not supported
make[3]: *** [any-true.lo] Error 1
make[2]: *** [all] Error 2
make[1]: *** [all-recursive] Error 1
make: *** [all] Error 2

What is the issue here and how can I solve it?

Upvotes: 2

Views: 927

Answers (1)

Harald
Harald

Reputation: 3180

You could try passing the location of the gcc compiler its absolute path rather than the binary name, just as

CC=/usr/local/gcc-6.1.0/bin/gcc-6.1.0 ./configure --enable-mpi --enable-threads --enable-openmp

EDIT After having a brief chat with OP, it looks like he omitted part of the error and the error came from the mpicc compiler used (due to --enable-mpi in the configure stage). According to the user, they were using OpenMPI and according to this FAQ the user can tune the C compiler by using the OMPI_CC environtment variable. So my suggestion was to build the FFTW library as

OMPI_CC=/usr/local/gcc-6.1.0/bin/gcc-6.1.0 make

Upvotes: 2

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