1 files changed, 72 insertions, 0 deletions
diff --git a/sci-libs/djbfft/djbfft-0.76-r3.ebuild b/sci-libs/djbfft/djbfft-0.76-r3.ebuild
new file mode 100644
index 000000000000..87ed3a30bcda
--- /dev/null
+++ b/sci-libs/djbfft/djbfft-0.76-r3.ebuild
@@ -0,0 +1,72 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit flag-o-matic toolchain-funcs multilib multilib-minimal
+
+DESCRIPTION="Extremely fast library for floating-point convolution"
+HOMEPAGE="https://cr.yp.to/djbfft.html"
+SRC_URI="https://cr.yp.to/djbfft/${P}.tar.gz"
+
+LICENSE="public-domain"
+SLOT="0"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ppc ~ppc64 ~riscv ~sparc ~x86 ~amd64-linux ~x86-linux"
+
+PATCHES=(
+	"${FILESDIR}"/${P}-gcc3.patch
+	"${FILESDIR}"/${P}-shared.patch
+	"${FILESDIR}"/${P}-headers.patch
+)
+
+DOCS=( CHANGES README TODO VERSION )
+
+src_prepare() {
+	default
+
+	# mask out everything which is not suggested by the author (RTFM)!
+	ALLOWED_FLAGS="-fstack-protector -march -mcpu -pipe -mpreferred-stack-boundary -ffast-math"
+	strip-flags
+
+	SOVER="${PV:0:1}.${PV:2:1}.${PV:3:1}" # a.bc -> a.b.c
+	SONAME="libdjbfft.so.${SOVER}"
+
+	multilib_copy_sources
+}
+
+multilib_src_configure() {
+	[[ ${ABI} == x86* ]] && append-cflags -malign-double
+
+	sed -i -e "s:\"lib\":\"$(get_libdir)\":" hier.c || die
+	echo "$(tc-getCC) ${CFLAGS} -fPIC" > "conf-cc"
+	echo "$(tc-getCC) ${LDFLAGS}" > "conf-ld"
+	echo "${ED}/usr" > "conf-home"
+	einfo "conf-cc: $(<conf-cc)"
+}
+
+multilib_src_compile() {
+	emake \
+		LIBDJBFFT=${SONAME} \
+		LIBPERMS=0755 \
+		${SONAME}
+	echo "the compile function was:"
+	cat ./compile
+	echo "the conf-ld function was:"
+	cat ./conf-ld
+}
+
+multilib_src_test() {
+	local t
+	for t in accuracy accuracy2 speed; do
+		emake ${t}
+		einfo "Testing ${t}"
+		LD_LIBRARY_PATH=. ./${t} > ${t}.out || die "test ${t} failed"
+	done
+}
+
+multilib_src_install() {
+	emake LIBDJBFFT=${SONAME} install
+	./install || die "install failed"
+	dosym ${SONAME} /usr/$(get_libdir)/libdjbfft.so
+	dosym ${SONAME} /usr/$(get_libdir)/libdjbfft.so.${SOVER%%.*}
+}