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# -*- shell-script -*-
#
# Copyright by The HDF Group.
# Copyright by the Board of Trustees of the University of Illinois.
# All rights reserved.
#
# This file is part of HDF5. The full HDF5 copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.
# This file should be sourced into configure if the compiler is the
# GNU g95/gfortran compiler or a derivative. It is careful not to do anything
# if the compiler is not GNU; otherwise `f9x_flags_set' is set to `yes'
#
# Get the compiler version in a way that works for GNU fortran
# gfortran unless a compiler version is already known
#
# f9x_vendor: The compiler name: gfortran
# f9x_version: Version number: 5.0-2, 5.2-2
#
if test X = "X$f9x_flags_set"; then
f9x_version="`$FC $FCFLAGS $H5_FCFLAGS -v 2>&1 |grep 'gcc version' |\
sed 's/.*gcc version \([-a-z0-9\.]*\).*/\1/'`"
if test X != "X$f9x_version"; then
f9x_vendor=`echo $f9x_version |sed 's/\([a-z]*\).*/\1/'`
f9x_version=`echo $f9x_version |sed 's/[-a-z]//g'`
if test X = "X$f9x_vendor" -a X != "X$f9x_version"; then
f9x_vendor=gfortran
fi
if test "-" != "$f9x_vendor-$f9x_version"; then
echo "compiler '$FC' is GNU $f9x_vendor-$f9x_version"
fi
# Get the compiler version numbers
f9x_vers_major=`echo $f9x_version | cut -f1 -d.`
f9x_vers_minor=`echo $f9x_version | cut -f2 -d.`
f9x_vers_patch=`echo $f9x_version | cut -f3 -d.`
test -n "$f9x_vers_major" || f9x_vers_major=0
test -n "$f9x_vers_minor" || f9x_vers_minor=0
test -n "$f9x_vers_patch" || f9x_vers_patch=0
fi
fi
if test "X-gfortran" = "X-$f9x_vendor"; then
FC_BASENAME=gfortran
F9XSUFFIXFLAG=""
FSEARCH_DIRS=""
# Need Fortran 2008 support for storage_size() in gcc 4.6 on
# (2008ts in some versions)
if test $f9x_vers_major -ge 8; then
H5_FCFLAGS="$H5_FCFLAGS -std=f2008"
elif test $f9x_vers_major -ge 5 -o $f9x_vers_major -eq 4 -a $f9x_vers_minor -ge 6; then
H5_FCFLAGS="$H5_FCFLAGS -std=f2008ts"
else
H5_FCFLAGS="$H5_FCFLAGS -std=f2003"
fi
###############################
# Architecture-specific flags #
###############################
arch=
# Nothing currently. (Uncomment code below and modify to add any)
#case "$host_os-$host_cpu" in
# *-i686)
# arch="-march=i686"
# ;;
#esac
H5_FCFLAGS="$H5_FCFLAGS $arch"
##############
# Production #
##############
PROD_FCFLAGS=
#########
# Debug #
#########
if test $f9x_vers_major -ge 5 -o $f9x_vers_major -eq 4 -a $f9x_vers_minor -ge 5; then
DEBUG_FCFLAGS="-fcheck=all"
else
DEBUG_FCFLAGS="-fbounds-check"
fi
###########
# Symbols #
###########
SYMBOLS_FCFLAGS="-g"
NO_SYMBOLS_FCFLAGS="-s"
#############
# Profiling #
#############
PROFILE_FCFLAGS="-pg"
################
# Optimization #
################
if test $f9x_vers_major -le 4; then
HIGH_OPT_CFLAGS="-O3"
DEBUG_OPT_CFLAGS=
else
HIGH_OPT_CFLAGS="-O3"
DEBUG_OPT_CFLAGS="-Og"
fi
NO_OPT_FCFLAGS="-O0"
############
# Warnings #
############
###########
# General #
###########
H5_FCFLAGS="$H5_FCFLAGS -pedantic -Wall -Wextra -Wunderflow -Wimplicit-interface -Wsurprising"
H5_FCFLAGS="$H5_FCFLAGS -Waliasing -Wcharacter-truncation -Wimplicit-procedure"
#############################
# Version-specific warnings #
#############################
# gfortran 4.3 (nothing new)
# gfortran 4.4
if test $f9x_vers_major -ge 5 -o $f9x_vers_major -eq 4 -a $f9x_vers_minor -ge 4; then
H5_FCFLAGS="$H5_FCFLAGS -Warray-temporaries -Wintrinsics-std"
fi
# gfortran 4.5 (nothing new)
# gfortran 4.6 (nothing new)
# gfortran 4.7
if test $f9x_vers_major -ge 5 -o $f9x_vers_major -eq 4 -a $f9x_vers_minor -ge 7; then
H5_FCFLAGS="$H5_FCFLAGS -Wreal-q-constant -Wfunction-elimination"
fi
# gfortran 4.8
if test $f9x_vers_major -ge 5 -o $f9x_vers_major -eq 4 -a $f9x_vers_minor -ge 8; then
H5_FCFLAGS="$H5_FCFLAGS -Wrealloc-lhs -Wrealloc-lhs-all"
# Turn off warnings for passing non-ANSI types to BIND().
# We pass a lot of hid_t, etc. types so this generates a LOT of spurious warnings.
H5_FCFLAGS="$H5_FCFLAGS -Wno-c-binding-type"
fi
# gfortran 4.9 (nothing new)
# gfortran 5
if test $f9x_vers_major -ge 5; then
H5_FCFLAGS="$H5_FCFLAGS -Wuse-without-only"
fi
# gfortran 6
if test $f9x_vers_major -ge 6; then
H5_FCFLAGS="$H5_FCFLAGS -Winteger-division"
fi
# gfortran 7 (nothing new)
# gfortran 8
if test $f9x_vers_major -ge 8; then
H5_FCFLAGS="$H5_FCFLAGS -Wfrontend-loop-interchange"
fi
# gfortran 9 (nothing new)
#################
# Flags are set #
#################
f9x_flags_set=yes
fi
# Clear f9x info if no flags set
if test "X-$f9x_flags_set" = "X-"; then
f9x_vendor=
f9x_version=
fi
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