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authorJustin Lecher <jlec@gentoo.org>2015-09-19 09:14:19 +0200
committerJustin Lecher <jlec@gentoo.org>2015-11-28 18:25:09 +0100
commitbc36b5406f2bb289a3920ef13d50853a567bc83d (patch)
treeee431372f2726c8ffbc5ca294fd07076be18f737 /eclass/fortran-2.eclass
parentdev-util/amdapp: Version bump; Fixes issue #542 (diff)
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Large fix of numeric code
fortran-int64.eclass code has been splitted into numeric-int64-multibuild.eclass, fortran-2.eclass and numeric.eclass. Gentoo: https://bugs.gentoo.org/show_bug.cgi?id=563292 https://bugs.gentoo.org/show_bug.cgi?id=551764 https://bugs.gentoo.org/show_bug.cgi?id=555302 Github: resolves gentoo-science/sci#438 resolves gentoo-science/sci#443 resolves gentoo-science/sci#447 resolves gentoo-science/sci#450 resolves gentoo-science/sci#467 resolves gentoo-science/sci#492 resolves gentoo-science/sci#507 resolves gentoo-science/sci#508 resolves gentoo-science/sci#522 Signed-off-by: Justin Lecher <jlec@gentoo.org>
Diffstat (limited to 'eclass/fortran-2.eclass')
-rw-r--r--eclass/fortran-2.eclass276
1 files changed, 276 insertions, 0 deletions
diff --git a/eclass/fortran-2.eclass b/eclass/fortran-2.eclass
new file mode 100644
index 000000000..5cb6d7d72
--- /dev/null
+++ b/eclass/fortran-2.eclass
@@ -0,0 +1,276 @@
+# Copyright 1999-2015 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+# @ECLASS: fortran-2.eclass
+# @MAINTAINER:
+# jlec@gentoo.org
+# sci@gentoo.org
+# @AUTHOR:
+# Author Justin Lecher <jlec@gentoo.org>
+# Test functions provided by Sebastien Fabbro and Kacper Kowalik
+# @BLURB: Simplify fortran compiler management
+# @DESCRIPTION:
+# If you need a fortran compiler, then you should be inheriting this eclass.
+# In case you only need optional support, please export FORTRAN_NEEDED before
+# inheriting the 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.
+# @EXAMPLE:
+# FORTRAN_NEEDED="lapack fortran"
+#
+# inherit fortran-2
+#
+# FORTRAN_NEED_OPENMP=1
+
+if [[ ! ${_FORTRAN_2_CLASS} ]]; then
+
+# @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}
+
+# @ECLASS-VARIABLE: FORTRAN_NEEDED
+# @DESCRIPTION:
+# If your package has an optional fortran support, set this variable
+# to the space separated list of USE triggering the fortran
+# dependency.
+#
+# e.g. FORTRAN_NEEDED=lapack would result in
+#
+# DEPEND="lapack? ( virtual/fortran )"
+#
+# If unset, we always depend on virtual/fortran.
+: ${FORTRAN_NEEDED:=always}
+
+inherit eutils toolchain-funcs
+
+for _f_use in ${FORTRAN_NEEDED}; do
+ case ${_f_use} in
+ always)
+ DEPEND+=" virtual/fortran"
+ break
+ ;;
+ no)
+ break
+ ;;
+ *)
+ DEPEND+=" ${_f_use}? ( virtual/fortran )"
+ ;;
+ esac
+done
+RDEPEND="${DEPEND}"
+
+# @FUNCTION: fortran_int64_abi_fflags
+# @DESCRIPTION: Return the Fortran compiler flag to enable 64 bit integers for
+# array indices
+# @CODE
+fortran_int64_abi_fflags() {
+ debug-print-function ${FUNCNAME} "${@}"
+ _FC=$(tc-getFC)
+ if [[ ${_FC} == *gfortran* ]]; then
+ echo "-fdefault-integer-8"
+ elif [[ ${_FC} == ifort ]]; then
+ echo "-integer-size 64"
+ else
+ die "Compiler flag for 64bit interger for ${_FC} unknown"
+ fi
+}
+
+# @FUNCTION: _fortran_write_testsuite
+# @INTERNAL
+# @DESCRIPTION:
+# writes fortran test code
+_fortran_write_testsuite() {
+ local filebase=${T}/test-fortran
+
+ # f77 code
+ cat <<- EOF > "${filebase}.f"
+ end
+ EOF
+
+ # f90/95 code
+ cat <<- EOF > "${filebase}.f90"
+ end
+ EOF
+
+ # f2003 code
+ cat <<- EOF > "${filebase}.f03"
+ procedure(), pointer :: p
+ end
+ EOF
+}
+
+# @FUNCTION: _fortran_compile_test
+# @USAGE: <compiler> [dialect]
+# @INTERNAL
+# @DESCRIPTION:
+# Takes fortran compiler as first argument and dialect as second.
+# Checks whether the passed fortran compiler speaks the fortran dialect
+_fortran_compile_test() {
+ local filebase=${T}/test-fortran
+ local fcomp=${1}
+ local fdia=${2}
+ local fcode=${filebase}.f${fdia}
+ local ret
+
+ [[ $# -lt 1 ]] && \
+ die "_fortran_compile_test() needs at least one argument"
+
+ [[ -f ${fcode} ]] || _fortran_write_testsuite
+
+ ${fcomp} "${fcode}" -o "${fcode}.x" \
+ >> "${T}"/_fortran_compile_test.log 2>&1
+ ret=$?
+
+ rm -f "${fcode}.x"
+ return ${ret}
+}
+
+# @FUNCTION: _fortran-has-openmp
+# @RETURN: return code of the compiler
+# @INTERNAL
+# @DESCRIPTION:
+# See if the fortran supports OpenMP.
+_fortran-has-openmp() {
+ local flag
+ local filebase=${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 "${fcode}.x" \
+ &>> "${T}"/_fortran_compile_test.log
+ ret=$?
+ (( ${ret} )) || break
+ done
+
+ rm -f "${fcode}.x"
+ return ${ret}
+}
+
+# @FUNCTION: _fortran_die_msg
+# @INTERNAL
+# @DESCRIPTION:
+# Detailed description how to handle fortran support
+_fortran_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 necessary"
+ eerror "fortran dialects are supported."
+ echo
+ die "Currently no working fortran compiler is available"
+}
+
+# @FUNCTION: _fortran_test_function
+# @INTERNAL
+# @DESCRIPTION:
+# Internal test function for working fortran compiler.
+# It is called in fortran-2_pkg_setup.
+_fortran_test_function() {
+ local dialect
+
+ : ${F77:=$(tc-getFC)}
+
+ : ${FORTRAN_STANDARD:=77}
+ for dialect in ${FORTRAN_STANDARD}; do
+ case ${dialect} in
+ 77) _fortran_compile_test $(tc-getF77) || \
+ _fortran_die_msg ;;
+ 90|95) _fortran_compile_test $(tc-getFC) 90 || \
+ _fortran_die_msg ;;
+ 2003) _fortran_compile_test $(tc-getFC) 03 || \
+ _fortran_die_msg ;;
+ 2008) die "Future" ;;
+ *) die "${dialect} is not a Fortran dialect." ;;
+ esac
+ done
+
+ tc-export F77 FC
+ einfo "Using following Fortran compiler:"
+ einfo " F77: ${F77}"
+ einfo " FC: ${FC}"
+
+ if [[ ${FORTRAN_NEED_OPENMP} == 1 ]]; then
+ if _fortran-has-openmp; then
+ einfo "${FC} has OPENMP support"
+ else
+ die "Please install current gcc with USE=openmp or set the FC variable to a compiler that supports OpenMP"
+ fi
+ fi
+}
+
+# @FUNCTION: _fortran-2_pkg_setup
+# @INTERNAL
+# @DESCRIPTION:
+# _The_ fortran-2_pkg_setup() code
+_fortran-2_pkg_setup() {
+ for _f_use in ${FORTRAN_NEEDED}; do
+ case ${_f_use} in
+ always)
+ _fortran_test_function && break
+ ;;
+ no)
+ einfo "Forcing fortran support off"
+ break
+ ;;
+ *)
+ if use ${_f_use}; then
+ _fortran_test_function && break
+ else
+ unset FC
+ unset F77
+ fi
+ ;;
+ esac
+ done
+}
+
+
+# @FUNCTION: fortran-2_pkg_setup
+# @DESCRIPTION:
+# Setup functionality,
+# checks for a valid fortran compiler and optionally for its openmp support.
+fortran-2_pkg_setup() {
+ case ${EAPI:-0} in
+ 0|1|2|3)
+ eqawarn "Support for EAPI < 4 will be removed from the"
+ eqawarn "fortran-2.eclass in until 2013-09-30."
+ eqawarn "Please migrate your package to a higher EAPI"
+ eqawarn "or file a bug at https://bugs.gentoo.org"
+ _fortran-2_pkg_setup ;;
+ 4|5)
+ if [[ ${MERGE_TYPE} != binary ]]; then
+ _fortran-2_pkg_setup
+ fi
+ ;;
+ esac
+}
+
+case ${EAPI:-0} in
+ 0|1|2|3|4|5) EXPORT_FUNCTIONS pkg_setup ;;
+ *) die "EAPI=${EAPI} is not supported" ;;
+esac
+
+_FORTRAN_2_ECLASS=1
+fi