dev-lang/zig: add stage2 support (on -9999)

Package-Manager: Portage-3.0.30, Repoman-3.0.3
Signed-off-by: BratishkaErik <bratishkaerik@getgoogleoff.me>
Closes: https://github.com/gentoo/gentoo/pull/25085
Signed-off-by: Joonas Niilola <juippis@gentoo.org>

3 files changed, 42 insertions, 1 deletions

diff --git a/dev-lang/zig/files/zig-9999-stage2-fix.patch b/dev-lang/zig/files/zig-9999-stage2-fix.patch
new file mode 100644
index 000000000000..520be382c562
--- /dev/null
+++ b/dev-lang/zig/files/zig-9999-stage2-fix.patch
@@ -0,0 +1,12 @@
+diff --git a/build.zig b/build.zig
+index 4d3cf49..4601935 100644
+--- a/build.zig
++++ b/build.zig
+@@ -550,6 +550,7 @@ fn addCmakeCfgOptionsToExe(
+                 else => |e| return e,
+             };
+             exe.linkSystemLibrary("unwind");
++            exe.linkSystemLibrary("c_nonshared");
+         } else if (exe.target.isFreeBSD()) {
+             try addCxxKnownPath(b, cfg, exe, "libc++.a", null, need_cpp_includes);
+             exe.linkSystemLibrary("pthread");
diff --git a/dev-lang/zig/metadata.xml b/dev-lang/zig/metadata.xml
index 9a74b67c8634..6555f4c1c940 100644
--- a/dev-lang/zig/metadata.xml
+++ b/dev-lang/zig/metadata.xml
@@ -2,6 +2,9 @@
 <!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
 <pkgmetadata>
 	<!-- maintainer-needed -->
+	<use>
+		<flag name="stage2">Install stage2 alongside stage1</flag>
+	</use>
 	<upstream>
 		<remote-id type="github">ziglang/zig</remote-id>
 	</upstream>
diff --git a/dev-lang/zig/zig-9999.ebuild b/dev-lang/zig/zig-9999.ebuild
index a0e3522a22a0..cdac1427ee7e 100644
--- a/dev-lang/zig/zig-9999.ebuild
+++ b/dev-lang/zig/zig-9999.ebuild
@@ -18,7 +18,7 @@ fi
 
 LICENSE="MIT"
 SLOT="0"
-IUSE="test"
+IUSE="test +stage2"
 RESTRICT="!test? ( test )"
 
 BUILD_DIR="${S}/build"
@@ -47,6 +47,9 @@ llvm_check_deps() {
 # see https://github.com/ziglang/zig/wiki/Troubleshooting-Build-Issues#high-memory-requirements
 CHECKREQS_MEMORY="10G"
 
+# see https://github.com/ziglang/zig/issues/11137
+PATCHES=( "${FILESDIR}/${P}-stage2-fix.patch" )
+
 pkg_setup() {
 	llvm_pkg_setup
 	check-reqs_pkg_setup
@@ -61,7 +64,30 @@ src_configure() {
 	cmake_src_configure
 }
 
+src_compile() {
+	cmake_src_compile
+
+	if use stage2 ; then
+		cd "${BUILD_DIR}" || die
+		./zig build -p stage2 -Dstatic-llvm=false -Denable-llvm=true || die
+	fi
+}
+
 src_test() {
 	cd "${BUILD_DIR}" || die
 	./zig build test || die
 }
+
+src_install() {
+	cmake_src_install
+
+	if use stage2 ; then
+		cd "${BUILD_DIR}" || die
+		mv ./stage2/bin/zig zig-stage2 || die
+		dobin zig-stage2
+	fi
+}
+
+pkg_postinst() {
+	use stage2 && elog "You enabled stage2 USE flag, Zig stage1 was installed as /usr/bin/zig, Zig stage2 was installed as /usr/bin/zig-stage2"
+}