app-arch/bzip2: Support app-alternatives/bzip2

Signed-off-by: Michał Górny <mgorny@gentoo.org>
Closes: https://github.com/gentoo/gentoo/pull/28481
Signed-off-by: Sam James <sam@gentoo.org>

2 files changed, 145 insertions, 11 deletions

diff --git a/app-arch/bzip2/bzip2-1.0.8-r4.ebuild b/app-arch/bzip2/bzip2-1.0.8-r4.ebuild
new file mode 100644
index 000000000000..3ac96e3d4ef2
--- /dev/null
+++ b/app-arch/bzip2/bzip2-1.0.8-r4.ebuild
@@ -0,0 +1,135 @@
+# Copyright 1999-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+# XXX: atm, libbz2.a is always PIC :(, so it is always built quickly
+#      (since we're building shared libs) ...
+
+EAPI=7
+
+VERIFY_SIG_OPENPGP_KEY_PATH="${BROOT}"/usr/share/openpgp-keys/bzip2.gpg
+inherit toolchain-funcs multilib-minimal usr-ldscript verify-sig
+
+DESCRIPTION="A high-quality data compressor used extensively by Gentoo Linux"
+HOMEPAGE="https://sourceware.org/bzip2/"
+SRC_URI="https://sourceware.org/pub/${PN}/${P}.tar.gz"
+SRC_URI+=" verify-sig? ( https://sourceware.org/pub/${PN}/${P}.tar.gz.sig )"
+
+LICENSE="BZIP2"
+SLOT="0/1" # subslot = SONAME
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~hppa ~ia64 ~loong ~m68k ~mips ~ppc ~ppc64 ~riscv ~s390 ~sparc ~x86"
+IUSE="static static-libs"
+
+BDEPEND="
+	verify-sig? ( sec-keys/openpgp-keys-bzip2 )
+"
+PDEPEND="
+	app-alternatives/bzip2
+"
+
+PATCHES=(
+	"${FILESDIR}"/${PN}-1.0.4-makefile-CFLAGS.patch
+	"${FILESDIR}"/${PN}-1.0.8-saneso.patch
+	"${FILESDIR}"/${PN}-1.0.4-man-links.patch #172986
+	"${FILESDIR}"/${PN}-1.0.6-progress.patch
+	"${FILESDIR}"/${PN}-1.0.3-no-test.patch
+	"${FILESDIR}"/${PN}-1.0.8-mingw.patch #393573
+	"${FILESDIR}"/${PN}-1.0.8-out-of-tree-build.patch
+)
+
+DOCS=( CHANGES README{,.COMPILATION.PROBLEMS,.XML.STUFF} manual.pdf )
+HTML_DOCS=( manual.html )
+
+src_prepare() {
+	default
+
+	# - Use right man path
+	# - Generate symlinks instead of hardlinks
+	# - pass custom variables to control libdir
+	sed -i \
+		-e 's:\$(PREFIX)/man:\$(PREFIX)/share/man:g' \
+		-e 's:ln -s -f $(PREFIX)/bin/:ln -s -f :' \
+		-e 's:$(PREFIX)/lib:$(PREFIX)/$(LIBDIR):g' \
+		Makefile || die
+}
+
+bemake() {
+	emake \
+		VPATH="${S}" \
+		CC="$(tc-getCC)" \
+		AR="$(tc-getAR)" \
+		RANLIB="$(tc-getRANLIB)" \
+		"$@"
+}
+
+multilib_src_compile() {
+	bemake -f "${S}"/Makefile-libbz2_so all
+	# Make sure we link against the shared lib #504648
+	ln -s libbz2.so.${PV} libbz2.so || die
+	bemake -f "${S}"/Makefile all LDFLAGS="${LDFLAGS} $(usex static -static '')"
+}
+
+multilib_src_test() {
+	cp "${S}"/sample* "${BUILD_DIR}" || die
+	bemake -f "${S}"/Makefile check
+}
+
+multilib_src_install() {
+	into /usr
+
+	# Install the shared lib manually.  We install:
+	#  .x.x.x - standard shared lib behavior
+	#  .x.x   - SONAME some distros use #338321
+	#  .x     - SONAME Gentoo uses
+	dolib.so libbz2.so.${PV}
+	local v
+	for v in libbz2.so{,.{${PV%%.*},${PV%.*}}} ; do
+		dosym libbz2.so.${PV} /usr/$(get_libdir)/${v}
+	done
+
+	use static-libs && dolib.a libbz2.a
+
+	if multilib_is_native_abi ; then
+		gen_usr_ldscript -a bz2
+
+		dobin bzip2recover
+		into /
+		newbin bzip2 bzip2-reference
+	fi
+}
+
+multilib_src_install_all() {
+	# `make install` doesn't cope with out-of-tree builds, nor with
+	# installing just non-binaries, so handle things ourselves.
+	insinto /usr/include
+	doins bzlib.h
+	into /usr
+	dobin bz{diff,grep,more}
+	doman bz{diff,grep,more}.1
+	newman bzip2.1 bzip2-reference.1
+
+	dosym bzdiff /usr/bin/bzcmp
+	dosym bzdiff.1 /usr/share/man/man1/bzcmp.1
+
+	dosym bzmore /usr/bin/bzless
+	dosym bzmore.1 /usr/share/man/man1/bzless.1
+
+	dosym bzip2-reference.1 /usr/share/man/man1/bzip2recover.1
+	local x
+	for x in bz{e,f}grep ; do
+		dosym bzgrep /usr/bin/${x}
+		dosym bzgrep.1 /usr/share/man/man1/${x}.1
+	done
+
+	einstalldocs
+}
+
+pkg_postinst() {
+	# ensure to preserve the symlinks before app-alternatives/bzip2
+	# is installed
+	local x
+	for x in bzip2 bunzip2 bzcat; do
+		if [[ ! -h ${EROOT}/bin/${x} ]]; then
+			ln -s bzip2-reference "${EROOT}/bin/${x}" || die
+		fi
+	done
+}
diff --git a/app-arch/bzip2/bzip2-9999.ebuild b/app-arch/bzip2/bzip2-9999.ebuild
index e463fbf759d7..025f6378d542 100644
--- a/app-arch/bzip2/bzip2-9999.ebuild
+++ b/app-arch/bzip2/bzip2-9999.ebuild
@@ -19,9 +19,8 @@ SLOT="0/1" # subslot = SONAME
 
 IUSE="static-libs"
 
-RDEPEND="
-	!app-arch/lbzip2[symlink(-)]
-	!app-arch/pbzip2[symlink(-)]
+PDEPEND="
+	app-alternatives/bzip2
 "
 
 multilib_src_configure() {
@@ -39,16 +38,17 @@ multilib_src_install() {
 
 	if multilib_is_native_abi ; then
 		gen_usr_ldscript -a bz2
-
-		dodir /bin
-		mv "${ED}"/usr/bin/bzip2 "${ED}"/bin || die
 	fi
 }
 
 multilib_src_install_all() {
-	# Move "important" bzip2 binaries to /bin and use the shared libbz2.so
-	dosym bzip2 /bin/bzcat
-	dosym bzip2 /bin/bunzip2
+	dodir /bin
+	mv "${ED}"/usr/bin/bzip2 "${ED}"/bin/bzip2-reference || die
+	mv "${ED}"/usr/share/man/man1/bzip2{,-reference}.1 || die
+
+	# moved to app-alternatives/bzip2
+	rm "${ED}"/usr/bin/{bzcat,bunzip2} || die
+	rm "${ED}"/usr/share/man/man1/{bzcat,bunzip2.1} || die
 
 	dosym bzdiff /usr/bin/bzcmp
 	dosym bzmore /usr/bin/bzless
@@ -57,8 +57,7 @@ multilib_src_install_all() {
 		dosym bzgrep /usr/bin/${x}
 	done
 
-	dosym bzip2.1 /usr/share/man/man1/bzip2recover.1
+	dosym bzip2-reference.1 /usr/share/man/man1/bzip2recover.1
 
-	local DOCS=( AUTHORS NEWS{,-pre-1.0.7} README.md )
 	einstalldocs
 }