libgomp on 32-bit darwin

[FX]

>    No problem here x86_64-apple-darwin15 with a build using…

True, I didn’t realize libgomp is built… but the Fortran module files are not installed in the right place.

$ ls /usr/local/gfortran/lib/**/libgomp.dylib
/usr/local/gfortran/lib/i386/libgomp.dylib
/usr/local/gfortran/lib/libgomp.dylib

$ ls /usr/local/gfortran/lib/**/omp_lib.mod  
/usr/local/gfortran/lib/gcc/x86_64-apple-darwin15/6.1.0/finclude/omp_lib.mod


It’s because the Makefile machinery is wrong. libgomp/Makefile.am has:

    fincludedir = $(libdir)/gcc/$(target_alias)/$(gcc_version)/finclude

while the corresponding libgfortran has:

fincludedir = $(libdir)/gcc/$(target_alias)/$(gcc_version)$(MULTISUBDIR)/finclude

notice the extra $(MULTISUBDIR).


So this is apparently not a new bug (https://gcc.gnu.org/bugzilla/show_bug.cgi?id=60670), but it probably should be fixed.

FX