dev-lang/ldc2: 1.35.0-r1 build D modules separately

Having this feature enabled, compared to building all D modules in one
go, on my machine at least, lowers the amount of memory used and speeds
up build times.

Signed-off-by: Horodniceanu Andrei <a.horodniceanu@proton.me>

1 files changed, 82 insertions, 0 deletions

diff --git a/dev-lang/ldc2/ldc2-1.35.0-r1.ebuild b/dev-lang/ldc2/ldc2-1.35.0-r1.ebuild
new file mode 100644
index 0000000..cade36e
--- /dev/null
+++ b/dev-lang/ldc2/ldc2-1.35.0-r1.ebuild
@@ -0,0 +1,82 @@
+# Copyright 1999-2024 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit multilib-build cmake llvm
+
+MY_PV="${PV//_/-}"
+MY_P="ldc-${MY_PV}-src"
+SRC_URI="https://github.com/ldc-developers/ldc/releases/download/v${MY_PV}/${MY_P}.tar.gz"
+S=${WORKDIR}/${MY_P}
+
+DESCRIPTION="LLVM D Compiler"
+HOMEPAGE="https://github.com/ldc-developers/ldc"
+KEYWORDS="~amd64 ~x86"
+LICENSE="BSD"
+SLOT="$(ver_cut 1-2)/$(ver_cut 3)"
+
+IUSE="static-libs"
+
+# Upstream supports LLVM 11.0 through 16.0.
+DEPEND="
+	|| (
+		sys-devel/llvm:16
+		sys-devel/llvm:15
+	)
+	<sys-devel/llvm-17:="
+IDEPEND=">=app-eselect/eselect-dlang-20140709"
+RDEPEND="
+	${DEPEND}
+	${IDEPEND}"
+
+LLVM_MAX_SLOT=16
+PATCHES="${FILESDIR}/ldc2-1.15.0-link-defaultlib-shared.patch"
+
+# For now, we support amd64 multilib. Anyone is free to add more support here.
+MULTILIB_COMPAT=( abi_x86_{32,64} )
+
+# Upstream supports "2.079-"
+DLANG_VERSION_RANGE="2.100-2.106"
+DLANG_PACKAGE_TYPE="single"
+
+inherit dlang
+
+src_prepare() {
+	cmake_src_prepare
+}
+
+d_src_configure() {
+	# Make sure libphobos2 is installed into ldc2's directory.
+	export LIBDIR_${ABI}="${LIBDIR_HOST}"
+	local mycmakeargs=(
+		-DD_VERSION=2
+		-DCMAKE_INSTALL_PREFIX=/usr/lib/ldc2/$(ver_cut 1-2)
+		-DD_COMPILER="${DMD} $(dlang_dmdw_dcflags)"
+		-DLDC_WITH_LLD=OFF
+		-DCOMPILE_D_MODULES_SEPARATELY=ON
+	)
+	use static-libs && mycmakeargs+=( -DBUILD_SHARED_LIBS=BOTH ) || mycmakeargs+=( -DBUILD_SHARED_LIBS=ON )
+	use abi_x86_32 && use abi_x86_64 && mycmakeargs+=( -DMULTILIB=ON )
+	cmake_src_configure
+}
+
+d_src_compile()
+{
+	cmake_src_compile
+}
+
+d_src_install() {
+	cmake_src_install
+
+	rm -rf "${ED}"/usr/share/bash-completion
+}
+
+pkg_postinst() {
+	# Update active ldc2
+	"${ROOT}"/usr/bin/eselect dlang update ldc2
+}
+
+pkg_postrm() {
+	"${ROOT}"/usr/bin/eselect dlang update ldc2
+}