sys-libs/libunwind: BDEPEND on texcore for USE=doc

Needed for building documentation.

Otherwise man pages would silently not be built:
```
configure: WARNING: latex2man not found. Install latex2man. Disabling docs.
```

Signed-off-by: Alfred Persson Forsberg <cat@catcream.org>
Closes: https://github.com/gentoo/gentoo/pull/26742
Signed-off-by: Sam James <sam@gentoo.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/sys-libs/libunwind/libunwind-1.6.2-r1.ebuild b/sys-libs/libunwind/libunwind-1.6.2-r1.ebuild
new file mode 100644
index 000000000000..d14ce27ffb31
--- /dev/null
+++ b/sys-libs/libunwind/libunwind-1.6.2-r1.ebuild
@@ -0,0 +1,97 @@
+# Copyright 2005-2022 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+MY_PV=${PV/_/-}
+MY_P=${PN}-${MY_PV}
+inherit multilib-minimal
+
+DESCRIPTION="Portable and efficient API to determine the call-chain of a program"
+HOMEPAGE="https://savannah.nongnu.org/projects/libunwind"
+SRC_URI="mirror://nongnu/libunwind/${MY_P}.tar.gz"
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="MIT"
+SLOT="0/8" # libunwind.so.8
+KEYWORDS="~amd64 ~arm ~arm64 ~hppa ~ia64 ~mips ~ppc ~ppc64 ~riscv ~s390 -sparc ~x86 ~amd64-linux ~x86-linux"
+IUSE="debug debug-frame doc libatomic lzma static-libs test zlib"
+
+RESTRICT="test !test? ( test )" # some tests are broken (toolchain version dependent, rely on external binaries)
+
+BDEPEND="
+	doc? ( app-text/texlive-core )
+"
+RDEPEND="
+	lzma? ( app-arch/xz-utils[static-libs?,${MULTILIB_USEDEP}] )
+	zlib? ( sys-libs/zlib[static-libs?,${MULTILIB_USEDEP}] )
+"
+# We just use the header from libatomic.
+DEPEND="${RDEPEND}
+	libatomic? ( dev-libs/libatomic_ops[${MULTILIB_USEDEP}] )"
+
+MULTILIB_WRAPPED_HEADERS=(
+	/usr/include/libunwind.h
+
+	# see libunwind.h for the full list of arch-specific headers
+	/usr/include/libunwind-aarch64.h
+	/usr/include/libunwind-arm.h
+	/usr/include/libunwind-hppa.h
+	/usr/include/libunwind-ia64.h
+	/usr/include/libunwind-mips.h
+	/usr/include/libunwind-ppc32.h
+	/usr/include/libunwind-ppc64.h
+	/usr/include/libunwind-riscv.h
+	/usr/include/libunwind-sh.h
+	/usr/include/libunwind-tilegx.h
+	/usr/include/libunwind-x86.h
+	/usr/include/libunwind-x86_64.h
+)
+
+src_prepare() {
+	default
+
+	chmod +x src/ia64/mk_cursor_i || die
+}
+
+multilib_src_configure() {
+	local myeconfargs=(
+		# --enable-cxx-exceptions: always enable it, headers provide the interface
+		# and on some archs it is disabled by default causing a mismatch between the
+		# API and the ABI, bug #418253
+		--enable-cxx-exceptions
+		--enable-coredump
+		--enable-ptrace
+		--enable-setjmp
+		$(use_enable debug-frame)
+		$(use_enable doc documentation)
+		$(use_enable lzma minidebuginfo)
+		$(use_enable static-libs static)
+		$(use_enable zlib zlibdebuginfo)
+		# conservative-checks: validate memory addresses before use; as of 1.0.1,
+		# only x86_64 supports this, yet may be useful for debugging, couple it with
+		# debug useflag.
+		$(use_enable debug conservative_checks)
+		$(use_enable debug)
+		$(use_enable test tests)
+	)
+
+	export ac_cv_header_atomic_ops_h=$(usex libatomic)
+
+	ECONF_SOURCE="${S}" econf "${myeconfargs[@]}"
+}
+
+multilib_src_compile() {
+	# bug #586208
+	CCACHE_NODIRECT=1 default
+}
+
+multilib_src_test() {
+	# Explicitly allow parallel build of tests.
+	# Sandbox causes some tests to freak out.
+	SANDBOX_ON=0 emake check
+}
+
+multilib_src_install_all() {
+	find "${ED}" -name "*.la" -type f -delete || die
+}