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# Copyright (C) 2001-2016 Quantum ESPRESSO Foundation
AC_DEFUN([X_AC_QE_CC], [
# candidate C compilers good for all cases
try_cc="cc gcc"
case "$arch:$f90_flavor" in
*:ifort* )
try_cc="icc ecc $try_cc"
;;
*:pgf90 )
try_cc="pgcc $try_cc"
;;
cray*:* )
try_cc="cc"
;;
necsx:* )
try_cc="sxcc"
;;
ppc64-bg*:*xlf90_r )
try_cc="bgxlc_r"
;;
ppc64-bg*:*xlf90 )
try_cc="bgxlc"
;;
ppc64:*xlf* | ppc64le:*xlf* )
try_cc="xlc_r $try_cc"
;;
esac
# check serial C compiler
if test "$env_cc" = "" ; then cc="$try_cc" ; else cc="$env_cc"; fi
AC_PROG_CC($cc)
cc=$CC
echo setting CC... $cc
AC_SUBST(cc)
# tentative C and loader flags, good for many cases
try_cflags="-O3"
c_ldflags=""
try_cpp="cpp"
case "$arch:$cc" in
*:pgcc )
# Do I need preprocessing here?
try_cflags="-fast -Mpreprocess"
;;
crayxt*:cc )
# Actually we need something like is done for ftn to detect
# the proper compiler used (NdFilippo)
try_cflags="-O3"
;;
necsx:* )
#try_cflags="-D__SX6 \$(IFLAGS) \$(MODFLAGS)"
try_cflags=""
;;
ppc64le:* )
try_cflags="-O3"
;;
ppc64-bg:* )
try_cflags="-O3 -q32"
;;
ppc64-bgq:* )
try_cflags="-O3"
;;
ppc64:xlc*)
try_cflags="-O3 -q64 -qthreaded"
c_ldflags="-q64"
;;
esac
if test "$cflags" = "" ; then cflags=$try_cflags ; fi
echo setting CFLAGS... $cflags
# compilation flags for all subsequent tests
test_cflags="`echo $cflags | sed 's/\$([[^)]]*)//g'`"
AC_SUBST(cflags)
])
|
