sci-libs/fftw: Rewrite ebuild to EAPI=6 standards

* Use multibuild.eclass for single/double precision
* Make patches -p1 compliant
* Simplify src_configure phase

Package-Manager: portage-2.3.0

4 files changed, 154 insertions, 16 deletions

diff --git a/sci-libs/fftw/fftw-2.1.5-r9.ebuild b/sci-libs/fftw/fftw-2.1.5-r9.ebuild
new file mode 100644
index 000000000000..bc142c731eb3
--- /dev/null
+++ b/sci-libs/fftw/fftw-2.1.5-r9.ebuild
@@ -0,0 +1,138 @@
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# $Id$
+
+EAPI=6
+
+FORTRAN_NEEDED=fortran
+
+inherit autotools flag-o-matic fortran-2 multibuild toolchain-funcs
+
+DESCRIPTION="Fast C library for the Discrete Fourier Transform"
+HOMEPAGE="http://www.fftw.org"
+SRC_URI="http://www.fftw.org/${P}.tar.gz"
+
+KEYWORDS="~alpha ~amd64 ~arm ~hppa ~ia64 ~ppc ~ppc64 ~s390 ~sparc ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x86-macos"
+
+LICENSE="GPL-2+"
+SLOT="2.1"
+IUSE="doc float fortran mpi openmp threads static-libs"
+
+RDEPEND="mpi? ( virtual/mpi )"
+DEPEND="${RDEPEND}"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-as-needed.patch
+	"${FILESDIR}"/${P}-configure.in.patch
+	"${FILESDIR}"/${P}-no-test.patch
+	"${FILESDIR}"/${P}-cc.patch
+	"${FILESDIR}"/${P}-texinfo5.1.patch
+)
+
+pkg_setup() {
+	if [[ ${MERGE_TYPE} != binary ]] && use openmp; then
+		if ! tc-has-openmp; then
+			ewarn "OpenMP is not available in your current selected compiler"
+
+			if tc-is-clang; then
+				ewarn "OpenMP support in sys-devel/clang is provided by sys-libs/libomp,"
+				ewarn "which you will need to build ${CATEGORY}/${PN} with USE=\"openmp\""
+			fi
+
+			die "need openmp capable compiler"
+		fi
+		FORTRAN_NEED_OPENMP=1
+	fi
+
+	fortran-2_pkg_setup
+
+	MULTIBUILD_VARIANTS=( single double )
+}
+
+src_prepare() {
+	default
+
+	# fix info files
+	local infofile
+	for infofile in doc/fftw*info*; do
+		cat >> ${infofile} <<-EOF || die
+			INFO-DIR-SECTION Libraries
+			START-INFO-DIR-ENTRY
+			* fftw: (fftw).				${DESCRIPTION}
+			END-INFO-DIR-ENTRY
+		EOF
+	done
+
+	mv configure.{in,ac} || die
+	sed -i 's/AM_CONFIG_HEADER/AC_CONFIG_HEADERS/g' configure.ac || die
+
+	eautoreconf
+
+	# 'FAQ' is actually a dir and causes issues with einstalldocs
+	rm -r FAQ || die
+
+	multibuild_copy_sources
+}
+
+fftw_src_configure() {
+	local myconf=(
+		--with-gcc=$(tc-getCC)
+		--enable-shared
+		--enable-type-prefix
+		--enable-vec-recurse
+		$(use_enable fortran)
+		$(use_enable mpi)
+		$(use_enable static-libs static)
+		$(use_enable x86 i386-hacks)
+		$(use_with openmp)
+	)
+
+	if use openmp || use threads; then
+		myconf+=( --enable-threads )
+	else
+		myconf+=( --disable-threads )
+	fi
+
+	[[ $MULTIBUILD_VARIANT == single ]] && myconf+=( --enable-float )
+
+	econf "${myconf[@]}"
+}
+
+src_configure() {
+	# this one is reported to cause trouble on pentium4 m series
+	filter-mfpmath sse
+
+	# here I need (surprise) to increase optimization:
+	# --enable-i386-hacks requires -fomit-frame-pointer to work properly
+	if use x86; then
+		is-flag -fomit-frame-pointer || append-flags -fomit-frame-pointer
+	fi
+	use openmp && [[ $(tc-getCC)$ == icc* ]] && append-ldflags $(no-as-needed)
+
+	multibuild_foreach_variant run_in_build_dir fftw_src_configure
+}
+
+src_compile() {
+	multibuild_foreach_variant run_in_build_dir default_src_compile
+}
+
+src_test() {
+	multibuild_foreach_variant run_in_build_dir default_src_test
+}
+
+src_install () {
+	use doc && HTML_DOCS=( doc/{*.html,*.gif} )
+	multibuild_foreach_variant run_in_build_dir default_src_install
+
+	doheader fortran/fftw_f77.i
+
+	create_fftw_symlinks() {
+		local i f letter=$1
+		for i in fft rfft; do
+			for f in "${ED%/}"/usr/{include,$(get_libdir)}/*${letter}${i}*; do
+				ln -s $(basename ${f}) ${f/${letter}${i}/${i}} || die
+			done
+		done
+	}
+	create_fftw_symlinks $(usex float s d)
+}
diff --git a/sci-libs/fftw/files/fftw-2.1.5-as-needed.patch b/sci-libs/fftw/files/fftw-2.1.5-as-needed.patch
index 2389f0e43f79..63f46dccc4fd 100644
--- a/sci-libs/fftw/files/fftw-2.1.5-as-needed.patch
+++ b/sci-libs/fftw/files/fftw-2.1.5-as-needed.patch
@@ -1,5 +1,5 @@
---- rfftw/Makefile.am.orig	2008-04-03 15:23:06.989019659 +0000
-+++ rfftw/Makefile.am	2008-04-03 15:23:35.658653448 +0000
+--- a/rfftw/Makefile.am
++++ b/rfftw/Makefile.am
 @@ -18,6 +18,7 @@
  					 rfftw.h                   
  
@@ -8,8 +8,8 @@
  MAINTAINERCLEANFILES = $(CODELETS) rconfig.c
  DISTCLEANFILES = srfftw.h drfftw.h
  
---- threads/Makefile.am.orig	2008-04-03 15:23:10.101197011 +0000
-+++ threads/Makefile.am	2008-04-03 15:23:35.662653676 +0000
+--- a/threads/Makefile.am
++++ b/threads/Makefile.am
 @@ -28,6 +28,10 @@
                               -version-info @SHARED_VERSION_INFO@ \
                               -rpath $(libdir)
@@ -33,8 +33,8 @@
  @FFTW_PREFIX1@rfftw_threads.h: rfftw_threads.h
  	rm -f $@
  	sed 's/\"fftw/\"@FFTW_PREFIX@fftw/g;s/\"rfftw/\"@FFTW_PREFIX@rfftw/g' $(srcdir)/rfftw_threads.h > $@
---- mpi/Makefile.am.orig	2008-04-03 15:22:43.811698858 +0000
-+++ mpi/Makefile.am	2008-04-03 15:25:50.930362143 +0000
+--- a/mpi/Makefile.am
++++ b/mpi/Makefile.am
 @@ -28,6 +28,9 @@
                           -version-info @SHARED_VERSION_INFO@ \
                           -rpath $(libdir)
@@ -92,8 +92,8 @@
  
  # for some reason, automake tries to use autoheader in order to
  # generate config.h.in, and fails because config.h.in is GNU-lly
---- mpi/test_sched.c.orig	2008-04-03 16:58:01.969033125 +0000
-+++ mpi/test_sched.c	2008-04-03 16:59:27.521908505 +0000
+--- a/mpi/test_sched.c
++++ b/mpi/test_sched.c
 @@ -27,6 +27,8 @@
       int **sched;
       int npes = -1, sortpe = -1, steps;
diff --git a/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch b/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch
index 718e74686f62..7abe3e751d5d 100644
--- a/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch
+++ b/sci-libs/fftw/files/fftw-2.1.5-configure.in.patch
@@ -1,5 +1,5 @@
---- configure.in.orig	2008-07-09 17:52:16.762461233 +0100
-+++ configure.in	2008-07-09 18:34:13.106471656 +0100
+--- a/configure.in
++++ b/configure.in
 @@ -1,6 +1,8 @@
 +
  dnl Process this file with autoconf to produce a configure script.
diff --git a/sci-libs/fftw/files/fftw-2.1.5-no-test.patch b/sci-libs/fftw/files/fftw-2.1.5-no-test.patch
index f9f54f68eb14..cc844a455e66 100644
--- a/sci-libs/fftw/files/fftw-2.1.5-no-test.patch
+++ b/sci-libs/fftw/files/fftw-2.1.5-no-test.patch
@@ -1,13 +1,13 @@
---- tests/Makefile.am.orig	2008-06-22 12:29:53.149138283 +0100
-+++ tests/Makefile.am	2008-06-22 12:30:32.731595087 +0100
+--- a/tests/Makefile.am
++++ b/tests/Makefile.am
 @@ -1,4 +1,4 @@
 -noinst_PROGRAMS = fftw_test rfftw_test
 +check_PROGRAMS = fftw_test rfftw_test
  noinst_HEADERS = test_main.h
  
  FFTWDIR=../fftw
---- mpi/Makefile.am.orig	2008-06-22 17:21:16.998466390 +0100
-+++ mpi/Makefile.am	2008-06-22 17:27:42.996463162 +0100
+--- a/mpi/Makefile.am
++++ b/mpi/Makefile.am
 @@ -4,8 +4,8 @@
  
  lib_LTLIBRARIES = @FFTW_MPI_LIBLIST@
@@ -18,8 +18,8 @@
  EXTRA_LTLIBRARIES = lib@FFTW_PREFIX@fftw_mpi.la \
                      lib@FFTW_PREFIX@rfftw_mpi.la
  EXTRA_HEADERS = @FFTW_PREFIX@fftw_mpi.h @FFTW_PREFIX@rfftw_mpi.h 
---- threads/Makefile.am.orig	2008-06-22 17:18:18.940409610 +0100
-+++ threads/Makefile.am	2008-06-22 17:28:00.485459803 +0100
+--- a/threads/Makefile.am
++++ b/threads/Makefile.am
 @@ -4,9 +4,9 @@
  
  lib_LTLIBRARIES = @FFTW_THREADS_LIBLIST@