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# Copyright 1999-2004 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/eclass/fortran.eclass,v 1.13 2006/01/17 03:29:31 spyderous Exp $
#
# Author: Danny van Dyk <kugelfang@gentoo.org>
#
inherit eutils autotools
DESCRIPTION="Based on the ${ECLASS} eclass"
IUSE="debug"
#DEPEND="virtual/fortran" # Let's aim for this...
# Which Fortran Compiler has been selected ?
export FORTRANC
# These are the options to ./configure / econf that enable the usage
# of a specific Fortran Compiler. If your package uses a different
# option that the one listed here, overwrite it in your ebuild.
g77_CONF="--with-f77"
f2c_CONF="--with-f2c"
# This function prints the necessary options for the currently selected
# Fortran Compiler.
fortran_conf() {
echo $(eval echo \${$(echo -n ${FORTRANC})_CONF})
}
# need_fortran(<profiles>):
# profiles = <profile> ... <profile>
#
# profile:
# * gfortran - GCC Fortran 95
# * g77 - GCC Fortran 77
# * f2c - Fortran 2 C Translator
# * ifc - Intel Fortran Compiler
#
# Checks if at least one of <profiles> is installed.
# Checks also if F77 (the fortran compiler to use) is available
# on the System.
need_fortran() {
if [ -z "$*" ]; then
eerror "Call need_fortran with at least one argument !"
fi
local AVAILABLE
local PROFILE
for PROFILE in $@; do
case ${PROFILE} in
gfortran)
if [ -x "$(which gfortran 2> /dev/null)" ]; then
AVAILABLE="${AVAILABLE} gfortran"
fi
;;
g77)
if [ -x "$(which g77 2> /dev/null)" ]; then
AVAILABLE="${AVAILABLE} g77"
fi
;;
f2c)
if [ -x "$(which f2c 2> /dev/null)" ]; then
AVAILABLE="${AVAILABLE} f2c"
fi
;;
ifc)
case ${ARCH} in
x86|ia64|amd64)
if [ -x "$(which ifc 2> /dev/null)" ]; then
AVAILABLE="${AVAILABLE} ifc"
fi
;;
*)
;;
esac
;;
esac
done
AVAILABLE="${AVAILABLE/^[[:space:]]}"
use debug && echo ${AVAILABLE}
if [ -z "${AVAILABLE}" ]; then
eerror "None of the needed Fortran Compilers ($@) is installed."
eerror "To install one of these, choose one of the following steps:"
i=1
for PROFILE in $@; do
case ${PROFILE} in
gfortran)
eerror "[${i}] USE=\"fortran\" emerge sys-devel/gcc-4.*"
;;
g77)
eerror "[${i}] USE=\"fortran\" emerge sys-devel/gcc-3.*"
;;
f2c)
eerror "[${i}] emerge dev-lang/f2c"
;;
ifc)
case ${ARCH} in
x86|ia64)
eerror "[${i}] emerge dev-lang/ifc"
;;
*)
;;
esac
esac
i=$((i + 1))
done
die "Install a Fortran Compiler !"
else
einfo "You need one of these Fortran Compilers: $@"
einfo "Installed are: ${AVAILABLE}"
if [ -n "${F77}" -o -n "${FC}" -o -n "${F2C}" ]; then
if [ -n "${F77}" ]; then
FC="${F77}" # F77 overwrites FC
fi
if [ -n "${FC}" -a -n "${F2C}" ]; then
ewarn "Using ${FC} and f2c is impossible. Disabling F2C !"
F2C="" # Disabling f2c
MY_FORTRAN="$(basename ${FC})" # set MY_FORTRAN to filename of
# the Fortran Compiler
else
if [ -n "${F2C}" ]; then
MY_FORTRAN="$(basename ${F2C})"
else
MY_FORTRAN="$(basename ${F77})"
fi
fi
fi
# default to gfortran if available, g77 if not
use debug && echo "MY_FORTRAN: \"${MY_FORTRAN}\""
if hasq gfortran ${AVAILABLE}; then
MY_FORTRAN=${MY_FORTRAN:=gfortran}
else
MY_FORTRAN=${MY_FORTRAN:=g77}
fi
use debug && echo "MY_FORTRAN: \"${MY_FORTRAN}\""
if ! hasq ${MY_FORTRAN} ${AVAILABLE}; then
eerror "Current Fortran Compiler is set to ${MY_FORTRAN}, which is not usable with this package !"
die "Wrong Fortran Compiler !"
fi
case ${MY_FORTRAN} in
gfortran|g77|ifc|f2c)
FORTRANC="${MY_FORTRAN}"
esac
fi
use debug && echo "FORTRANC: \"${FORTRANC}\""
}
# patch_fortran():
# Apply necessary patches for ${FORTRANC}
patch_fortran() {
if [ -z "${FORTRANC}" ]; then
return
fi
local PATCHES=$(find ${FILESDIR} -name "${P}-${FORTRANC}-*")
einfo "Applying patches for selected FORTRAN compiler: ${FORTRANC}"
local PATCH
if [ -n "${PATCHES}" ]; then
for PATCH in ${PATCHES}; do
epatch ${PATCH}
done
eautoreconf
fi
}
# fortran_pkg_setup():
# Set FORTRAN to indicate the list of Fortran Compiler that
# can be used for the ebuild.
# If not set in ebuild, FORTRAN will default to f77
fortran_pkg_setup() {
need_fortran ${FORTRAN:="gfortran g77"}
}
# fortran_src_unpack():
# Run patch_fortran if no new src_unpack() is defined.
fortran_src_unpack() {
unpack ${A}
cd ${S}
patch_fortran
}
EXPORT_FUNCTIONS pkg_setup src_unpack
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