# This is the recipe.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 "$BPM_SOURCE"
  # Patch for compiling a shared library
  patch -Np1 -i "$BPM_WORKDIR"/liblua.patch
  # Create lua pkgconfig file
  sed -e "s/%V/${BPM_PKG_VERSION%.*}/" -e "s/%R/${BPM_PKG_VERSION}/" "$BPM_WORKDIR"/lua.pc.in > lua.pc
  # Add version suffix to lua files
  sed -r -e "/^LUA_(SO|A|T)=/ s/lua/lua${BPM_PKG_VERSION%.*}/" -e "/^LUAC_T=/ s/luac/luac${BPM_PKG_VERSION%.*}/" -i src/Makefile
}

# The build function is executed in the source directory
# This function is used to compile the source code
build() {
  make MYCFLAGS="$CFLAGS -fPIC" MYLDFALGS="$LDFLAGS" linux
}

# The package function is executed in the source directory
# This function is used to move the compiled files into the output directory
package() {
  make INSTALL_DATA="cp -d" INSTALL_TOP="$BPM_OUTPUT"/usr INSTALL_INC="$BPM_OUTPUT"/usr/include/lua${BPM_PKG_VERSION%.*} INSTALL_MAN="$BPM_OUTPUT"/usr/share/man/man1 TO_BIN="lua${BPM_PKG_VERSION%.*} luac${BPM_PKG_VERSION%.*}" TO_LIB="liblua${BPM_PKG_VERSION%.*}.so liblua${BPM_PKG_VERSION%.*}.so.${BPM_PKG_VERSION%.*} liblua${BPM_PKG_VERSION%.*}.so.${BPM_PKG_VERSION}" DESTDIR="$BPM_OUTPUT" install

  # Create library aliases
  ln -sf liblua${BPM_PKG_VERSION%.*}.so "$BPM_OUTPUT"/usr/lib/liblua.so.${BPM_PKG_VERSION%.*}
  ln -sf liblua${BPM_PKG_VERSION%.*}.so "$BPM_OUTPUT"/usr/lib/liblua.so.${BPM_PKG_VERSION}

  # Install pkg-config file
  version_no_dot=$(echo ${BPM_PKG_VERSION%.*} | tr -d '.')
  install -Dm644 lua.pc "$BPM_OUTPUT"/usr/lib/pkgconfig/lua${version_no_dot}.pc
  ln -sf lua${version_no_dot}.pc "$BPM_OUTPUT"/usr/lib/pkgconfig/lua${BPM_PKG_VERSION%.*}.pc
  ln -sf lua${version_no_dot}.pc "$BPM_OUTPUT"/usr/lib/pkgconfig/lua-${BPM_PKG_VERSION%.*}.pc

  # Move manpages
  mv "$BPM_OUTPUT"/usr/share/man/man1/lua.{1,${BPM_PKG_VERSION}}
  mv "$BPM_OUTPUT"/usr/share/man/man1/luac.{1,${BPM_PKG_VERSION}}

  # Install documentation
  install -d "$BPM_OUTPUT"/usr/share/doc/${BPM_PKG_NAME}
  install -m644 doc/*.{gif,png,css,html} "$BPM_OUTPUT"/usr/share/doc/${BPM_PKG_NAME}

  # Install license
  install -Dm644 "$BPM_SOURCE"/doc/readme.html "$BPM_OUTPUT"/usr/share/licenses/${BPM_PKG_NAME}/readme.html
}