dev-util/lua-language-server: Stop prestripping binaries, Remove direct calls to gcc, patch build scripts to respect CFLAGS/CXXFLAGS/LDFLAGS

Closes: https://bugs.gentoo.org/889302
Closes: https://bugs.gentoo.org/889308
Closes: https://bugs.gentoo.org/889306
Closes: https://bugs.gentoo.org/889304
Signed-off-by: Mathis Winterer <mrmagic223325@fedora.email>

dev-util/lua-language-server/lua-language-server-3.6.4.ebuild

@@ -3,7 +3,7 @@
 
 EAPI=8
 
-inherit ninja-utils
+inherit ninja-utils toolchain-funcs
 
 DESCRIPTION="Lua language server"
 HOMEPAGE="https://github.com/sumneko/lua-language-server"
@@ -18,14 +18,45 @@ BDPEND="
 	${NINJA_DEPEND}
 	app-arch/unzip
 	dev-util/ninja
-	sys-devel/gcc
 "
 RESTRICT="!test? ( test )"
+PATCHES=( "${FILESDIR}/linux.ninja.patch" )
+
+src_prepare() {
+	# Remove hardcoded gcc references
+	sed -i "/lm.cxx/a lm.cc = '$(tc-getCC)'" \
+		make.lua || die
+	sed -i "s/CC = gcc/ CC = ${tc-getCC}/" \
+		3rd/lpeglabel/makefile || die
+	sed -i "s/flags = \"-Wall -Werror\"/flags =\"${CXXFLAGS}\"/" \
+		make/code_format.lua || die
+	# Patch
+	default
+	# Shipped file doesn't respect CFLAGS/CXXFLAGS
+	sed -i -e "s/^cc = REPLACE_ME/cc = $(tc-getCC)/" \
+		-e "s/CFLAGS/${CFLAGS}/" \
+		-e "s/CXXFLAGS/${CXXFLAGS}/" \
+		-e "s/LDFLAGS/${LDFLAGS}/" \
+		3rd/luamake/compile/ninja/linux.ninja || die
+}
 
 src_compile() {
 	eninja -C 3rd/luamake -f compile/ninja/linux.ninja "$(usex test "test" "luamake")"
 	use test && eninja -C 3rd/luamake -f compile/ninja/linux.ninja luamake
 	./3rd/luamake/luamake init || die
+
+	eapply "${FILESDIR}/build.ninja.patch"
+
+	sed -i "s/^cc = gcc/cc = $(tc-getCC)/" \
+		build/build.ninja || die
+
+	# Generated file doesn't respect CFLAGS/CXXFLAGS
+	sed -i -e "s/^cc = REPLACE_ME/cc = $(tc-getCC)/" \
+		-e "s/CFLAGS/${CFLAGS}/" \
+		-e "s/CXXFLAGS/${CXXFLAGS}/" \
+		-e "s/LDFLAGS/${LDFLAGS}/" \
+		build/build.ninja || die
+
 	# Tests are broken
 	eninja -f build/build.ninja all
 }