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authorJustin Lecher <jlec@gentoo.org>2011-06-21 12:54:26 +0200
committerJustin Lecher <jlec@gentoo.org>2011-06-21 12:54:26 +0200
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diff --git a/eclass/fortran-2.eclass b/eclass/fortran-2.eclass
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-# Copyright 1999-2011 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Header: $
-
-# Author Justin Lecher <jlec@gentoo.org>
-# Test functions provided by Sebastien Fabbro and Kacper Kowalik
-
-# @ECLASS: fortran-2.eclass
-# @MAINTAINER:
-# jlec@gentoo.org
-# sci@gentoo.org
-# @BLURB: Simplify fortran compiler management
-# @DESCRIPTION:
-# If you need a fortran compiler, then you should be inheriting this eclass.
-# The eclass tests for working fortran compilers
-# and exports the variables FC and F77.
-# Optionally, it checks for extended capabilities based on
-# the variable options selected in the ebuild
-# The only phase function exported is fortran-2_pkg_setup.
-
-# @ECLASS-VARIABLE: FORTRAN_NEED_OPENMP
-# @DESCRIPTION:
-# Set to "1" in order to automatically have the eclass abort if the fortran
-# compiler lacks openmp support.
-: ${FORTRAN_NEED_OPENMP:=0}
-
-# @ECLASS-VARIABLE: FORTRAN_STANDARD
-# @DESCRIPTION:
-# Set this, if a special dialect needs to be supported.
-# Generally not needed as default is sufficient.
-#
-# Valid settings are any combination of: 77 90 95 2003
-: ${FORTRAN_STANDARD:=77}
-
-inherit toolchain-funcs
-
-DEPEND="virtual/fortran"
-RDEPEND="${DEPEND}"
-
-# @FUNCTION: _write_testsuite
-# @DESCRIPTION: writes fortran test code
-# @INTERNAL
-_write_testsuite() {
- local filebase=${T}/test-fortran
-
- # f77 code
- cat <<- EOF > "${filebase}.f"
- end
- EOF
-
- # f90/95 code
- cat <<- EOF > "${filebase}.f90"
- end
- EOF
-
- # f2003 code
- cat <<- EOF > "${filebase}.f03"
- procedure(), pointer :: p
- end
- EOF
-}
-
-# @FUNCTION: _compile_test
-# @DESCRIPTION:
-# Takes fortran compiler as first argument and dialect as second.
-# Checks whether the passed fortran compiler speaks the fortran dialect
-# @INTERNAL
-_compile_test() {
- local filebase=${T}/test-fortran
- local fcomp=${1}
- local fdia=${2}
- local fcode=${filebase}.f${fdia}
- local ret
-
- [[ $# -eq 0 ]] && die "_compile_test() needs at least one argument"
-
- [[ -f ${fcode} ]] || _write_testsuite
-
- ${fcomp} "${fcode}" -o "${fcode}.x" >&/dev/null
- ret=$?
-
- rm -f "${fcode}.x"
- return ${ret}
-}
-
-# @FUNCTION: _fortran-has-openmp
-# @DESCRIPTION:
-# See if the fortran supports OpenMP.
-# @INTERNAL
-_fortran-has-openmp() {
- local flag
- local filebase=${T}/test-fc-openmp
- local fcode=${filebase}.f
- local ret
- local _fc=$(tc-getFC)
-
- cat <<- EOF > "${fcode}"
- call omp_get_num_threads
- end
- EOF
-
- for flag in -fopenmp -xopenmp -openmp -mp -omp -qsmp=omp; do
- ${_fc} ${flag} "${fcode}" -o "${fcode}.x" >&/dev/null
- ret=$?
- (( ${ret} )) || break
- done
-
- rm -f "${fcode}.x"
- return ${ret}
-}
-
-# @FUNCTION: _die_msg
-# @DESCRIPTION: Detailed description how to handle fortran support
-# @INTERNAL
-_die_msg() {
- echo
- eerror "Please install currently selected gcc version with USE=fortran."
- eerror "If you intend to use a different compiler then gfortran, please"
- eerror "set FC variable accordingly and take care that the neccessary"
- eerror "fortran dialects are support."
- echo
- die "Currently no working fortran compiler is available"
-}
-
-# @FUNCTION: fortran-2_pkg_setup
-# @DESCRIPTION:
-# Setup functionallity, checks for a valid fortran compiler and optionally for its openmp support.
-fortran-2_pkg_setup() {
- local dialect
-
- : ${F77:=$(tc-getFC)}
-
- : ${FORTRAN_STANDARD:=77}
- for dialect in ${FORTRAN_STANDARD}; do
- case ${dialect} in
- 77) _compile_test $(tc-getF77) || _die_msg ;;
- 90|95) _compile_test $(tc-getFC) 90 || _die_msg ;;
- 2003) _compile_test $(tc-getFC) 03 || _die_msg ;;
- 2008) die "Future" ;;
- *) die "${dialect} is not a Fortran dialect." ;;
- esac
- done
-
- if [[ ${FORTRAN_NEED_OPENMP} == 1 ]]; then
- _fortran-has-openmp || \
- die "Please install current gcc with USE=openmp or set the FC variable to a compiler that supports OpenMP"
- fi
- tc-export F77 FC
-}
-
-case ${EAPI:-0} in
- 1|2|3|4) EXPORT_FUNCTIONS pkg_setup ;;
- *) die "EAPI=${EAPI} is not supported" ;;
-esac