# This is the source.sh script. It is executed by BPM in a temporary directory when compiling a source package
# BPM Expects the source code to be extracted into the automatically created 'source' directory which can be accessed using $BPM_SOURCE
# BPM Expects the output files to be present in the automatically created 'output' directory which can be accessed using $BPM_OUTPUT

DOWNLOAD="https://github.com/KhronosGroup/SPIRV-Tools/archive/refs/tags/vulkan-sdk-${BPM_PKG_VERSION}/SPIRV-Tools-${BPM_PKG_VERSION}.tar.gz"
FILENAME="${DOWNLOAD##*/}"

# The prepare function is executed in the root of the temp directory
# This function is used for downloading files and putting them into the correct location
prepare() {
  wget "$DOWNLOAD"
  tar -xvf "$FILENAME" --strip-components=1 -C "$BPM_SOURCE"
}

# The build function is executed in the source directory
# This function is used to compile the source code
build() {
  mkdir build
  cd build

  cmake -DCMAKE_INSTALL_PREFIX=/usr     \
        -DCMAKE_BUILD_TYPE=Release      \
        -DSPIRV_WERROR=OFF              \
        -DBUILD_SHARED_LIBS=ON          \
        -DSPIRV_TOOLS_BUILD_STATIC=OFF  \
        -DSPIRV-Headers_SOURCE_DIR=/usr \
        -G Ninja ..
  ninja
}

# The check function is executed in the source directory
# This function is used to run tests to verify the package has been compiled correctly
check() {
  cd build
  ninja test
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  cd build
  DESTDIR="$BPM_OUTPUT" ninja install

  install -Dm644 "$BPM_SOURCE"/LICENSE "$BPM_OUTPUT"/usr/share/licenses/spirv-tools/LICENSE
}