sci-electronics/ghdl: add static-libs USE for llvm

Closes: https://bugs.gentoo.org/938171
Signed-off-by: Maciej Barć <xgqt@gentoo.org>

sci-electronics/ghdl/ghdl-4.1.0-r1.ebuild

@@ -0,0 +1,100 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+ADA_COMPAT=( gnat_2021 gcc_13 )
+LLVM_COMPAT=( {16..17} )        # Check configure script for supported LLVM versions.
+
+inherit ada edo llvm-r1 toolchain-funcs
+
+DESCRIPTION="Open-source analyzer, compiler, and simulator for VHDL 2008/93/87"
+HOMEPAGE="https://ghdl.github.io/ghdl/
+	https://github.com/ghdl/ghdl/"
+
+if [[ "${PV}" == *9999* ]] ; then
+	inherit git-r3
+
+	EGIT_REPO_URI="https://github.com/ghdl/${PN}.git"
+else
+	SRC_URI="https://github.com/ghdl/${PN}/archive/v${PV}.tar.gz
+		-> ${P}.tar.gz"
+
+	KEYWORDS="~amd64 ~x86"
+fi
+
+LICENSE="GPL-2+"
+SLOT="0"
+IUSE="llvm +static-libs"
+
+# The LLVM backend requires static libraries to work, see bug: https://bugs.gentoo.org/938171
+REQUIRED_USE="${ADA_REQUIRED_USE} llvm? ( static-libs )"
+
+RDEPEND="
+	${ADA_DEPS}
+	llvm? (
+		$(llvm_gen_dep '
+			sys-devel/llvm:${LLVM_SLOT}=
+		')
+	)
+"
+DEPEND="
+	${RDEPEND}
+"
+BDEPEND="
+	dev-util/patchelf
+"
+
+PATCHES=( "${FILESDIR}/${PN}-4.0.0_pre20231218-no-pyunit.patch" )
+
+pkg_setup() {
+	ada_pkg_setup
+
+	use llvm && llvm-r1_pkg_setup
+}
+
+src_prepare() {
+	default
+
+	sed -i "s|ar rc|$(tc-getAR) rc|g" Makefile.in || die
+}
+
+src_configure() {
+	tc-export CC CXX
+
+	local -a myconf=(
+		# Build.
+		--disable-werror
+
+		# Install location.
+		--libdir=$(get_libdir)
+		--prefix="/usr"
+
+		# Features.
+		--enable-libghdl
+		--enable-synth
+	)
+
+	if use llvm ; then
+		myconf+=(
+			--with-llvm-config="llvm-config"
+		)
+	fi
+
+	# Not a autotools script!
+	edo sh ./configure "${myconf[@]}"
+}
+
+src_compile() {
+	default
+
+	patchelf --set-soname libghw.so lib/libghw.so || die
+}
+
+src_install() {
+	default
+
+	if ! use static-libs ; then
+		find "${ED}" -type f -name '*.a' -delete || die
+	fi
+}