2 files changed, 92 insertions, 0 deletions
diff --git a/dev-libs/ntl/Manifest b/dev-libs/ntl/Manifest
index ef36d31bbcf1..50dfd9aed9cb 100644
--- a/dev-libs/ntl/Manifest
+++ b/dev-libs/ntl/Manifest
@@ -1,4 +1,5 @@
 DIST ntl-11.5.1.tar.gz 2304103 BLAKE2B 92284383451c7a810f7ee8d9a82836695d19d2a2e46b71c8c60b00acb77f4b4d3bad5497a309616a3e3188567d20203f5ad31295130ab0f3ace08417188c9fda SHA512 cf1f642b8a0f9cdc6dda888e07183817dc67ff494e56a852053aeb15b3d2a0e61fbc05824779c5d1f20b8115fba6f97266acf7e0b0b527c25df5989c86d5928f
 EBUILD ntl-11.5.1-r1.ebuild 2071 BLAKE2B 63b41f8d75761d7d002238955c7c3a8f81af90cd3db436eec1e5a30017995f2ffa2456d912e3b103bdb25d3916e5d6f94b17f70ae5960b91fa83bb870f3201a3 SHA512 71a9d39b67f2144522090613a9143585ae17727d200958a89ae7317d6dacaadcdf09d5d10fcca2c00c77f507243fd7e56bfef9cbdc989c42a27f828a8be18dc6
 EBUILD ntl-11.5.1-r3.ebuild 2558 BLAKE2B 18998bc75528ff91ee88c6932ae2982d898940fbf0d9e344bab1f445e81cd8899c854816222ed47409543b9d700bb5d0ebbd0dbba9d1dd6bf20af445e9bc2124 SHA512 e308a4c7739df1a8c52d7aa3714a81701afd2d7049c2ea9db4b9580ff51e267d3ac17016275b55b8bc51ed6a3e863bfb7fb42a1746011a500006c9322380e23b
+EBUILD ntl-11.5.1-r4.ebuild 2674 BLAKE2B abfbeaffe5f23d694d740536f7e9f998fac0ce60f205886f566c5eaca81a7ef41a67eb4612030553413b9c731a6c12704943a06c39b154186e459b4cf3ae167d SHA512 5aebc09655d7423161f42518bbdb0c3be8550e283598b6784a54c99a296233ec7f023ba264f0c0b332cd5889e50957ef6d95d57405791560de69c131d34a337f
 MISC metadata.xml 628 BLAKE2B 12ef87b42f60ca7bd5f91708c96471378481bfdc911d638a550608f62928a40e879431028f6e578047b79749e0c8307a4075520434191099adece5a771e5c27f SHA512 724f4bc44918ec49f4bb30ef7c9cc6de8c4243845a2a4c7d8c73db6f1db8fa548ad0932f324deea2002ea35cb7b410120cb86a0743bb2d6765fcd987593fcd84
diff --git a/dev-libs/ntl/ntl-11.5.1-r4.ebuild b/dev-libs/ntl/ntl-11.5.1-r4.ebuild
new file mode 100644
index 000000000000..c8e07339e445
--- /dev/null
+++ b/dev-libs/ntl/ntl-11.5.1-r4.ebuild
@@ -0,0 +1,91 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit toolchain-funcs gnuconfig
+
+DESCRIPTION="High-performance and portable C++ number theory library"
+HOMEPAGE="https://www.shoup.net/ntl/ https://github.com/libntl/ntl"
+SRC_URI="https://www.shoup.net/ntl/${P}.tar.gz"
+
+LICENSE="LGPL-2.1+"
+SLOT="0/44"
+KEYWORDS="amd64 ~arm64 ~loong ~ppc ~ppc64 ~riscv ~x86 ~amd64-linux ~x86-linux ~ppc-macos ~x64-macos"
+IUSE="doc threads"
+
+BDEPEND="dev-lang/perl"
+DEPEND="dev-libs/gmp:0=
+	dev-libs/gf2x
+	threads? ( >=dev-libs/gf2x-1.2 )"
+RDEPEND="${DEPEND}"
+
+S="${WORKDIR}/${P}/src"
+
+DOCS=( "${WORKDIR}/${P}"/README )
+
+src_unpack() {
+	default
+	gnuconfig_update "${S}/libtool-origin/"
+}
+
+src_configure() {
+	# The DoConfig script builds its own libtool, but doesn't
+	# really try to set up the build environment (bug 718892).
+	export CC="$(tc-getCC)"
+	export CXX="$(tc-getCXX)"
+
+	# Currently the build system can build a static library or both
+	# static and shared libraries, but not only shared libraries. The
+	# name NTL_GMP_LIP is *not* a typo.
+	#
+	# We have left NTL_ENABLE_AVX_FFT unconditionally disabled: NTL's
+	# AVX2 detection can fail even when the CPU supports it (bug
+	# 815775), and moreover, can fail due to CXXFLAGS. When that
+	# happens, and if we try to use the AVX FFT, the build fails.
+	# Finally, doc/config.txt says, "this is experimental at moment, and
+	# may lead to worse performance." So we are probably not missing out
+	# on much.
+	#
+	# The NATIVE=on option adds "-march=native" to CXXFLAGS and should
+	# not be enabled on Gentoo, but is currently necessary for NTL's CPU
+	# feature detection to work (bug 815775). See the upstream issue,
+	#
+	#  https://github.com/libntl/ntl/issues/22
+	#
+	perl DoConfig \
+		PREFIX="${EPREFIX}"/usr \
+		LIBDIR="${EPREFIX}"/usr/$(get_libdir) \
+		CXXFLAGS="${CXXFLAGS}" \
+		CPPFLAGS="${CPPFLAGS}" \
+		LDFLAGS="${LDFLAGS}" \
+		CXX="$(tc-getCXX)" \
+		AR="$(tc-getAR)" \
+		RANLIB="$(tc-getRANLIB)" \
+		SHARED=on \
+		NTL_GMP_LIP=on \
+		NTL_GF2X_LIB=on \
+		NTL_THREADS=$(usex threads on off) \
+		NTL_ENABLE_AVX_FFT=off \
+		NATIVE=on \
+		|| die "DoConfig failed"
+
+	if use doc; then
+		DOCS+=( "${WORKDIR}/${P}"/doc/*.txt )
+		HTML_DOCS=( "${WORKDIR}/${P}"/doc/*.html "${WORKDIR}/${P}"/doc/*.gif )
+	fi
+
+	# 780534 - Required for rlibtool so it can find the generated libtool
+	ln -sf libtool-build/libtool . || die
+}
+
+src_install() {
+	default
+	find "${ED}" -name '*.la' -delete || die
+
+	# Use rm -f because the static archive may not be created when
+	# using (for example) slibtool-shared.
+	rm -f "${ED}/usr/$(get_libdir)"/libntl.a || die
+
+	rm -r "${ED}"/usr/share/doc/NTL || die
+}