Python cannot be compiled with the MPI wrapper around the GCC compiler #106962
Description
The configure script and configure.ac check for compiler:
case "$CC" in
*icc*)
# ICC needs -fp-model strict or floats behave badly
CFLAGS_NODIST="$CFLAGS_NODIST -fp-model strict"
;;
*xlc*)
CFLAGS_NODIST="$CFLAGS_NODIST -qalias=noansi -qmaxmem=-1"
;;
esacThe MPI GCC compiler: mpicc is qualified as the intel compiler, because of the 'icc' in the name, and applies the fp-model strict option to the arguments, which is invalid syntax for GCC, causing multiple compile time errors with recent GCC versions:
gcc: error: unrecognized command-line option ‘-fp-model’; did you mean ‘-fipa-modref’?
By first filtering out the mpicc compiler case, this mistake is prevented:
case "$CC" in
*mpicc*)
CFLAGS_NODIST="$CFLAGS_NODIST"
;;
*icc*)
# ICC needs -fp-model strict or floats behave badly
CFLAGS_NODIST="$CFLAGS_NODIST -fp-model strict"
;;
*xlc*)
CFLAGS_NODIST="$CFLAGS_NODIST -qalias=noansi -qmaxmem=-1"
;;
esac(Now that I have this created, I can no doubt use its issue number to get the pull request with this fix through the pipeline)