Jack,
My Fink package clustalo has the ability to build using OpenMP. When I
set CC and CXX to mpicc and mpic++ on 10.7, the package builds fine and
links to the openmpi and gcc48 libraries. However, I have bug reports
from two 10.9 users where omp.h is not found. Here's the failed
compiler command:
/bin/sh ../../libtool --tag=CC --mode=compile mpicc -DHAVE_CONFIG_H
-I. -I../../src -I/sw/include -fopenmp -O3 -g -O2 -MT ktuple_pair.lo
-MD -MP -MF .deps/ktuple_pair.Tpo -c -o ktuple_pair.lo ktuple_pair.c
libtool: compile: mpicc -DHAVE_CONFIG_H -I. -I../../src -I/sw/include
-fopenmp -O3 -g -O2 -MT ktuple_pair.lo -MD -MP -MF .deps/ktuple_pair.Tpo
-c ktuple_pair.c -fno-common -DPIC -o .libs/ktuple_pair.o
clang: warning: argument unused during compilation: '-fopenmp'
ktuple_pair.c:41:10: fatal error: 'omp.h' file not found
#include <omp.h>
^
1 error generated.
And omp.h does exist for him:
$ ls -l /sw/lib/gcc4.8/lib/gcc/x86_64-apple-darwin13.0.0/4.8.2/include/omp.h
-rw-r--r-- 1 root admin 3620 Oct 28 11:41
/sw/lib/gcc4.8/lib/gcc/x86_64-apple-darwin13.0.0/4.8.2/include/omp.h
Debian has seen this failure in their clang build farm, which makes
sense since clang can't do OpenMPI yet.
<http://clang.debian.net/logs/2013-07-14/clustalo_1.2.0-1_unstable_clang.log>
It seems that mpicc on 10.9 is using clang as the compiler (openmpi-10.9
sets CC and CXX to clang/clang++) and not gcc-fsf-4.8. Is this usage
correct? And is this the cause of the clustalo build failure?
Thanks for your help,
Hanspeter
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