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# -*- shell-script -*-
#
# This file is part of the HDF4 build script. It is processed shortly
# after configure starts and defines, among other things, flags for
# the various compilation modes.
# Choosing C and Fortran Compilers
# --------------------------------------
#
# The user should be able to specify the compiler by setting the CC
# and F77 environment variables to the name of the compiler and any
# switches it requires for proper operation. If CC is unset then this
# script may set it. If CC is unset by time this script completes then
# configure will try `gcc' and `cc' in that order (perhaps some others
# too).
#
# Note: Code later in this file may depend on the value of $CC_BASENAME
# in order to distinguish between different compilers when
# deciding which compiler command-line switches to use. This
# variable is set based on the incoming value of $CC and is only
# used within this file.
# The default compiler is `cc', which should map to clang
if test -z "$CC"; then
CC=cc
CC_BASENAME=cc
fi
# Figure out clang C compiler flags
. $srcdir/config/clang-flags
# Figure out GNU C compiler flags
. $srcdir/config/gnu-flags
# Figure out Intel oneAPI C compiler flags
. $srcdir/config/oneapi-flags
# Figure out Intel classic C compiler flags
. $srcdir/config/intel-flags
# The default compiler is 'f77', which should map to gfortran
if test "X-$F77" = "X-"; then
F77=f77
F77_BASENAME=f77
fi
# Figure out GNU FC compiler flags
. $srcdir/config/gnu-fflags
# compiler version strings
# check if the compiler_version_info is already set
if test -z "$cc_version_info"; then
case $CC in
# whatever matches *pgcc* will also match *gcc*, so this one must come first
*pgcc*)
cc_version_info=`$CC $CFLAGS $H4_CFLAGS -V 2>&1 | grep 'pgcc'`
;;
*gcc*)
cc_version_info=`$CC $CFLAGS $H4_CFLAGS --version 2>&1 | grep -v 'PathScale' |\
grep 'GCC' | sed 's/\(.*(GCC) [-a-z0-9\. ]*\).*/\1/'`
;;
*icc*)
cc_version_info=`$CC $CCFLAGS $H4_CCFLAGS -V 2>&1 | grep 'Version' |\
sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
;;
*clang*)
cc_version_info="`$CC $CFLAGS $H4_CFLAGS --version 2>&1 |\
grep 'clang version' | sed 's/.*clang version \([-a-z0-9\.]*\).*/\1/'`"
;;
*)
echo "No match to get cc_version_info for $CC"
;;
esac
fi
# get fortran version info
case $F77 in
*gfortran*)
fc_version_info=`$F77 $FFLAGS --version 2>&1 |\
grep 'GCC' | sed 's/\(.*(GCC) [-a-z0-9\. ]*\).*/\1/'`
fc_version="`$F77 $FFLAGS -v 2>&1 |grep 'gcc version' |\
sed 's/.*gcc version \([-a-z0-9\.]*\).*/\1/'`"
if test X != "X$fc_version"; then
fc_version=`echo $fc_version |sed 's/[-a-z]//g'`
fi
;;
*ifc*|*ifort*)
fc_version_info=`$F77 $FFLAGS -V 2>&1 | grep 'Version' |\
sed 's/\(Intel.* Compiler\).*\( Version [a-z0-9\.]*\).*\( Build [0-9]*\)/\1\2\3/'`
fc_version="`$F77 $FFLAGS -V 2>&1 |grep '^Intel'`"
if test X != "X$fc_version"; then
fc_version="`echo $fc_version |sed 's/.*Version \([-a-z0-9\.\-]*\).*/\1/'`"
fi
;;
*f95*)
# Figure out which compiler we are using: pgf90 or Absoft f95
RM='rm -f'
tmpfile=/tmp/cmpver.$$
$F77 -V >$tmpfile
if test -s "$tmpfile"; then
if( grep -s 'Absoft' $tmpfile > /dev/null) then
FC_BASENAME=f95
fi
fi
$RM $tmpfile
fc_version_info=`$F77 -V | grep Absoft`
;;
*g95*|*g77*)
fc_version_info=`$F77 $FFLAGS --version 2>&1 |\
grep 'GCC'`
;;
*pgf90*)
fc_version_info=`$F77 $FFLAGS -V 2>&1 | grep 'pgf90'`
fc_version="`$F77 $FFLAGS -V 2>&1 |grep '^pgf90 '`"
if test X != "X$fc_version"; then
fc_version=`echo $fc_version |sed 's/pgf90 \([-a-z0-9\.\-]*\).*/\1/'`
fi
;;
*)
echo "No match to get fc_version_info for $F77"
;;
esac
if test X != "X$fc_version"; then
# Get the compiler version numbers
fc_vers_major=`echo $fc_version | cut -f1 -d.`
fi
# Overriding Configure Tests
# --------------------------
#
# Values for overriding configuration tests when cross compiling.
# Set this to `yes' or `no' depending on whether the target is big
# endian or little endian.
#ac_cv_c_bigendian=${ac_cv_c_bigendian='yes'}
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