dev-lang/ada-bootstrap: add 12

No ~loong as GCC 12 didn't support it. Adding older branches to facilitate
GCC testing. I originally wasn't going to bother but I'd like to bisect
an issue on ARM, so...

Built with ::gentoo at 6895c729372e48a5f596abd65cfeb26c178c5b17, same
stage3 as before for earlier binaries (stage3-amd64-hardened-systemd-20241214T201851Z).

The only quirk is, for `build-ada-bootsraps`, crossdev's behaviour with
--gcc to specify certain versions may use unkeyworded GCC in a particular
slot (not checked), but easy to reproduce still with the right ::gentoo commit.

See https://github.com/thesamesam/sam-gentoo-scripts/blob/2c192ac1461144fb2a2ab83014ad13794e4efc3d/niche/build-ada-bootstraps.

Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 121 insertions, 0 deletions

diff --git a/dev-lang/ada-bootstrap/ada-bootstrap-12.ebuild b/dev-lang/ada-bootstrap/ada-bootstrap-12.ebuild
new file mode 100644
index 000000000000..26ffd1b4ef9f
--- /dev/null
+++ b/dev-lang/ada-bootstrap/ada-bootstrap-12.ebuild
@@ -0,0 +1,121 @@
+# Copyright 2024-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+# The binaries in SRC_URI are generated by the following (roughly):
+# * taking an amd64 stage3
+# * adding USE=ada to make.conf
+# * running `crossdev ${CHOST} --ex-gcc -S`
+# * running `USE=ada ${CHOST}-emerge -v1 gcc`
+# * copy /usr/${CHOST}/var/cache/binpkgs/sys-devel/gcc* into
+#   ada-bootstrap-${PV}-${CHOST}.gpkg.tar
+#
+# The full script is at https://github.com/thesamesam/sam-gentoo-scripts/blob/91558fb51c56a661d6f374507888ff67725ca660/build-ada-bootstraps.
+#
+# Binaries in SRC_URI are regular Gentoo binpkgs in the GPKG format.
+#
+# Note: of course, the used GCC on both CBUILD and CHOST
+# must be the same version, correspond to ${PV} in ada-bootstrap,
+# and be at most the newest stable GCC (ideally older).
+inherit unpacker
+
+DESCRIPTION="Binary bootstrap compiler for GNAT (Ada compiler)"
+HOMEPAGE="https://wiki.gentoo.org/wiki/Project:Ada"
+SRC_URI="
+	alpha? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-alpha-unknown-linux-gnu.gpkg.tar
+	)
+	arm64? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-aarch64-unknown-linux-gnu.gpkg.tar
+	)
+	arm? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-armv6j-softfp-linux-gnueabi.gpkg.tar
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-armv6j-unknown-linux-gnueabihf.gpkg.tar
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-armv7a-softfp-linux-gnueabi.gpkg.tar
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-armv7a-unknown-linux-gnueabihf.gpkg.tar
+	)
+	hppa? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-hppa1.1-unknown-linux-gnu.gpkg.tar
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-hppa2.0-unknown-linux-gnu.gpkg.tar
+	)
+	ppc? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-powerpc-unknown-linux-gnu.gpkg.tar
+	)
+	ppc64? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-powerpc64le-unknown-linux-gnu.gpkg.tar
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-powerpc64-unknown-linux-gnu.gpkg.tar
+	)
+	riscv? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-riscv64-unknown-linux-gnu.gpkg.tar
+	)
+	sparc? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-sparc64-unknown-linux-gnu.gpkg.tar
+	)
+	s390? (
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-s390-ibm-linux-gnu.gpkg.tar
+		https://dev.gentoo.org/~sam/distfiles/${CATEGORY}/${PN}/${P}-s390x-ibm-linux-gnu.gpkg.tar
+	)
+"
+S=${WORKDIR}
+
+LICENSE="GPL-2 GPL-3"
+SLOT="0"
+KEYWORDS="-* ~arm ~arm64 ~hppa ~ppc ~ppc64 ~riscv ~sparc"
+
+RDEPEND="
+	>=dev-libs/gmp-4.3.2:=
+	>=dev-libs/mpfr-2.4.2:=
+	>=dev-libs/mpc-0.8.1:=
+	sys-libs/zlib
+	virtual/libiconv
+"
+
+src_unpack() {
+	# We want to unpack only the appropriate tarball for CHOST (e.g. on arm).
+	TARBALL_TO_UNPACK=
+
+	local archive
+	for archive in ${A} ; do
+		local tarball_chost=${archive/${P}-}
+		tarball_chost=${tarball_chost%%.gpkg.tar}
+
+		if [[ ${tarball_chost} == ${CHOST} ]] ; then
+			TARBALL_TO_UNPACK=${archive}
+			break
+		fi
+	done
+
+	if [[ -z ${TARBALL_TO_UNPACK} ]] ; then
+		die "No tarball found for CHOST=${CHOST}. Please file a bug at bugs.gentoo.org."
+	fi
+
+	unpack_gpkg "${TARBALL_TO_UNPACK}"
+}
+
+src_install() {
+	local chost=${TARBALL_TO_UNPACK/${P}-}
+	chost=${chost%%.gpkg.tar}
+
+	BINPKG=$(find "${WORKDIR}"/ -type d -mindepth 1 -maxdepth 1 -iname 'gcc-*')
+	BINPKG="${BINPKG#${WORKDIR}}"
+
+	dodir /usr/lib/ada-bootstrap
+	mv "${WORKDIR}"/${BINPKG}/image/usr/ "${ED}"/usr/lib/ada-bootstrap || die
+
+	# Make `gcc-config`-style symlinks
+	insinto /usr/lib/ada-bootstrap/bin
+	local tool
+	for tool in gcc gnat{,bind,chop,clean,kr,link,ls,make,name,prep} ; do
+		dosym -r /usr/lib/ada-bootstrap/usr/${chost}/gcc-bin/${PV}/${tool} /usr/lib/ada-bootstrap/bin/${tool}
+		dosym -r /usr/lib/ada-bootstrap/usr/${chost}/gcc-bin/${PV}/${tool} /usr/lib/ada-bootstrap/bin/${chost}-${tool}
+		dosym -r /usr/lib/ada-bootstrap/usr/${chost}/gcc-bin/${PV}/${tool} /usr/lib/ada-bootstrap/bin/${chost}-${tool}-${PV}
+	done
+
+	rm -rf "${ED}"/usr/lib/ada-bootstrap/usr/bin || die
+	# This gives us the same layout as older dev-lang/ada-bootstrap
+	dosym -r /usr/lib/ada-bootstrap/bin /usr/lib/ada-bootstrap/usr/bin
+	dosym -r /usr/lib/ada-bootstrap/usr/libexec /usr/lib/ada-bootstrap/libexec
+}
+
+# TODO: pkg_postinst warning/log?