# 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

# The prepare function is executed in the root of the temp directory
# This function is used for putting downloaded files to the correct location or applying patches
prepare() {
  cd "$BPM_SOURCE"

  patch -Np1 -i "$BPM_WORKDIR"/rust-1.93.0-fix.patch

  make mrproper
  cp ../config .config
}

# The build function is executed in the source directory
# This function is used to compile the source code
build() {
  make LLVM=1 olddefconfig
  make LLVM=1
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package_linux-lts() {
  # Install kernel modules
  make INSTALL_MOD_PATH="$BPM_OUTPUT"/usr INSTALL_MOD_STRIP=1 modules_install

  # Install kernel image and config
  install -Dm644 arch/x86/boot/bzImage "$BPM_OUTPUT"/boot/vmlinuz-linux-lts
  install -Dm644 .config "$BPM_OUTPUT"/boot/config-linux-lts

  # Install package licenses
  install -d "$BPM_OUTPUT"/usr/share/licenses
  cp -r LICENSES "$BPM_OUTPUT"/usr/share/licenses/linux-lts
}

package_linux-lts-docs() {
  # Install documentation
  install -d "$BPM_OUTPUT"/usr/share/doc/
  cp -r Documentation "$BPM_OUTPUT"/usr/share/doc/linux-lts

  # Install package licenses
  install -d "$BPM_OUTPUT"/usr/share/licenses
  ln -sf linux-lts "$BPM_OUTPUT"/usr/share/licenses/linux-lts-docs
}