# Description: OpenGL and OpenGL ES shader front end and validator
# URL: https://www.khronos.org/opengles/sdk/tools/Reference-Compiler
# Maintainer: Danny Rawlins, crux at romster dot me
# Depends on: cmake
# Optional: ninja

name=glslang
version=11.4.0
release=1
_spirv_headers=dafead1765f6c1a5f9f8a76387dcb2abe4e54acd
_spirv_tools=dc72924cb31cd9f3dbc3eb47e9d926cf641e3a07
source=(https://github.com/KhronosGroup/glslang/archive/$version/$name-$version.tar.gz
	https://github.com/KhronosGroup/SPIRV-Headers/archive/$_spirv_headers/SPIRV-Headers-$_spirv_headers.tar.gz
	https://github.com/KhronosGroup/SPIRV-Tools/archive/$_spirv_tools/SPIRV-Tools-$_spirv_tools.tar.gz
	known_good.py.in)

build() {
	cp -r SPIRV-Tools-$_spirv_tools $name-$version/External/spirv-tools
	cp -r SPIRV-Headers-$_spirv_headers $name-$version/External/spirv-tools/external/spirv-headers

	sed -e "s|@SRC@|$SRC/$name-$version|" $SRC/known_good.py.in > $SRC/known_good.py
	chmod u+x $SRC/known_good.py
	$SRC/known_good.py

	prt-get isinst ninja && PKGMK_GLSLANG+=' -G Ninja'
	prt-get isinst ccache && \
		PKGMK_GLSLANG+=' -D USE_CCACHE=ON' && \
		PATH="$(echo ${PATH} | awk -v RS=: -v ORS=: '/ccache/ {next} {print}' | sed 's/:*$//')"

	local config="
		-S $name-$version
		-D CMAKE_INSTALL_PREFIX=/usr
		-D CMAKE_INSTALL_LIBDIR=lib
		-D CMAKE_BUILD_TYPE=Release
		-D CMAKE_SKIP_RPATH:BOOL=yes
		-Wno-dev"

	cmake -B build-static $config $PKGMK_GLSLANG \
		-D BUILD_SHARED_LIBS=OFF \
		-D CMAKE_CXX_FLAGS_RELEASE="${CXXFLAGS}"
	cmake --build build-static

	# https://github.com/KhronosGroup/glslang/issues/1484 -Wl,--no-undefined
	cmake -B build-shared $config $PKGMK_GLSLANG \
		-D BUILD_SHARED_LIBS=ON \
		-D CMAKE_CXX_FLAGS_RELEASE="${CXXFLAGS}" \
		-D CMAKE_SHARED_LINKER_FLAGS='-Wl,--no-undefined'
	cmake --build build-shared

	DESTDIR=$PKG cmake --build build-static --target install
	DESTDIR=$PKG cmake --build build-shared --target install

	mv $PKG/usr/bin/spirv-remap $SRC/
	rm -r $PKG/usr/{bin/spirv*,include/spirv-tools,lib/cmake/SPIRV-Tools*,lib/libSPIRV-*,lib/pkgconfig}
	mv $SRC/spirv-remap $PKG/usr/bin/spirv-remap
}