sys-apps/groff: Sync with Gentoo

It's from Gentoo commit 4dbb4258e63e143021f446455fd2875c00681337.

Signed-off-by: Flatcar Buildbot <buildbot@flatcar-linux.org>

sdk_container/src/third_party/portage-stable/sys-apps/groff/files/groff-1.23.0-musl-getopt.patch

@@ -0,0 +1,11 @@
+--- a/src/libs/libgroff/getopt.c
++++ b/src/libs/libgroff/getopt.c
+@@ -122,7 +122,7 @@
+    whose names are inconsistent.  */
+ 
+ #ifndef getenv
+-extern char *getenv ();
++extern char *getenv (const char *);
+ #endif
+ 
+ #endif /* not __GNU_LIBRARY__ */

sdk_container/src/third_party/portage-stable/sys-apps/groff/groff-1.23.0-r1.ebuild

@@ -0,0 +1,115 @@
+# Copyright 1999-2025 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit toolchain-funcs
+
+MY_P="${P/_/.}"
+DESCRIPTION="Text formatter used for man pages"
+HOMEPAGE="https://www.gnu.org/software/groff/groff.html"
+
+if [[ ${PV} == *_rc* ]] ; then
+	SRC_URI="https://alpha.gnu.org/gnu/groff/${MY_P}.tar.gz"
+else
+	SRC_URI="mirror://gnu/groff/${MY_P}.tar.gz"
+	KEYWORDS="~alpha amd64 arm arm64 ~hppa ~loong ~m68k ~mips ppc ppc64 ~riscv ~s390 ~sparc x86 ~amd64-linux ~x86-linux ~arm64-macos ~ppc-macos ~x64-macos ~x64-solaris"
+fi
+
+S="${WORKDIR}/${MY_P}"
+
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="examples uchardet X"
+
+RDEPEND="
+	uchardet? ( app-i18n/uchardet )
+	X? (
+		x11-libs/libICE
+		x11-libs/libSM
+		x11-libs/libX11
+		x11-libs/libXaw
+		x11-libs/libXmu
+		x11-libs/libXt
+	)
+"
+DEPEND="${RDEPEND}"
+BDEPEND="
+	dev-lang/perl
+	sys-apps/texinfo
+"
+
+DOCS=( BUG-REPORT ChangeLog MORE.STUFF NEWS PROBLEMS PROJECTS README TODO )
+
+QA_CONFIG_IMPL_DECL_SKIP=(
+	# False positive with older autoconf, will be fixed w/ autoconf-2.72
+	static_assert
+)
+
+PATCHES=(
+	# bug #16108, bug #17580, bug #121502
+	"${FILESDIR}"/${PN}-1.19.2-man-unicode-dashes.patch
+	"${FILESDIR}"/${PN}-1.23.0-musl-getopt.patch
+)
+
+src_prepare() {
+	default
+
+	# Honor Gentoo's docdir
+	sed -i -e "s|^docdir =.*|docdir = \"${EPREFIX}/usr/share/doc/${PF}\"|g" \
+		Makefile.in \
+		|| die "failed to modify Makefile.in"
+
+	local pfx=$(usex prefix ' Prefix' '')
+	cat <<-EOF >> tmac/mdoc.local || die
+	.ds volume-operating-system Gentoo${pfx}
+	.ds operating-system Gentoo${pfx}/${KERNEL}
+	.ds default-operating-system Gentoo${pfx}/${KERNEL}
+	EOF
+
+	# make sure we don't get a crappy `g' nameprefix on UNIX systems with real
+	# troff (GROFF_G macro runs some test to see, its own troff doesn't satisfy)
+	sed -i -e 's/^[ \t]\+g=g$/g=/' configure || die
+}
+
+src_configure() {
+	local myeconfargs=(
+		--with-appdefdir="${EPREFIX}"/usr/share/X11/app-defaults
+		--without-compatibility-wrappers   # for Prefix
+		$(use_with uchardet)
+		$(use_with X x)
+	)
+
+	econf "${myeconfargs[@]}"
+}
+
+src_compile() {
+	local -a CROSS_ARGS
+	tc-is-cross-compiler && CROSS_ARGS+=(
+		GROFFBIN="$(type -P groff)"
+		TROFFBIN="$(type -P troff)"
+		GROFF_BIN_DIR=
+		GROFF_BIN_PATH=
+	)
+
+	emake AR="$(tc-getAR)" "${CROSS_ARGS[@]}"
+}
+
+src_install() {
+	default
+
+	# The following links are required for man, bug #123674
+	dosym eqn /usr/bin/geqn
+	dosym tbl /usr/bin/gtbl
+
+	if ! use examples ; then
+		# The pdf files might not be generated if ghostscript is unavailable, bug #602020
+		local pdf="${ED}/usr/share/doc/${PF}/examples/mom/mom-pdf.pdf"
+		if [[ -e ${pdf} ]] ; then
+			# Keep mom-pdf.pdf since it's more of a manual than an example
+			# bug #454196 and bug #516732
+			mv "${pdf}" "${ED}/usr/share/doc/${PF}/pdf/" || die
+		fi
+		rm -rf "${ED}/usr/share/doc/${PF}/examples"
+	fi
+}