# Copyright 1999-2015 Gentoo Foundation # Distributed under the terms of the GNU General Public License v2 # $Id$ # @ECLASS: vala.eclass # @MAINTAINER: # gnome@gentoo.org # @AUTHOR: # Alexandre Rostovtsev <tetromino@gentoo.org> # @BLURB: Sets up the environment for using a specific version of vala. # @DESCRIPTION: # This eclass sets up commonly used environment variables for using a specific # version of dev-lang/vala to configure and build a package. It is needed for # packages whose build systems assume the existence of certain unversioned vala # executables, pkgconfig files, etc., which Gentoo does not provide. # # This eclass provides one phase function: src_prepare. inherit eutils multilib case "${EAPI:-0}" in 0) die "EAPI=0 is not supported" ;; 1) ;; *) EXPORT_FUNCTIONS src_prepare ;; esac # @ECLASS-VARIABLE: VALA_MIN_API_VERSION # @DESCRIPTION: # Minimum vala API version (e.g. 0.22). VALA_MIN_API_VERSION=${VALA_MIN_API_VERSION:-0.22} # @ECLASS-VARIABLE: VALA_MAX_API_VERSION # @DESCRIPTION: # Maximum vala API version (e.g. 0.32). VALA_MAX_API_VERSION=${VALA_MAX_API_VERSION:-0.32} # @ECLASS-VARIABLE: VALA_USE_DEPEND # @DEFAULT_UNSET # @DESCRIPTION: # USE dependencies that vala must be built with (e.g. vapigen). # @FUNCTION: vala_api_versions # @DESCRIPTION: # Outputs a list of vala API versions from VALA_MAX_API_VERSION down to # VALA_MIN_API_VERSION. vala_api_versions() { [[ ${VALA_MIN_API_VERSION} =~ ^0\.[[:digit:]]+$ ]] || die "Invalid syntax of VALA_MIN_API_VERSION" [[ ${VALA_MAX_API_VERSION} =~ ^0\.[[:digit:]]+$ ]] || die "Invalid syntax of VALA_MAX_API_VERSION" local minimal_supported_minor_version minor_version # Dependency atoms are not generated for Vala versions older than 0.${minimal_supported_minor_version}. minimal_supported_minor_version="22" for ((minor_version = ${VALA_MAX_API_VERSION#*.}; minor_version >= ${VALA_MIN_API_VERSION#*.}; minor_version = minor_version - 2)); do if ((minor_version >= minimal_supported_minor_version)); then echo "0.${minor_version}" fi done } # @FUNCTION: vala_depend # @DESCRIPTION: # Outputs a ||-dependency string on vala from VALA_MAX_API_VERSION down to # VALA_MIN_API_VERSION vala_depend() { local u v versions=$(vala_api_versions) [[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}(+)]" echo -n "|| (" for v in ${versions}; do echo -n " dev-lang/vala:${v}${u}" done echo " )" } # @FUNCTION: vala_best_api_version # @DESCRIPTION: # Returns the highest installed vala API version satisfying # VALA_MAX_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND. vala_best_api_version() { local u v [[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}(+)]" for v in $(vala_api_versions); do has_version "dev-lang/vala:${v}${u}" && echo "${v}" && return done } # @FUNCTION: vala_src_prepare # @USAGE: [--ignore-use] [--vala-api-version api_version] # @DESCRIPTION: # Sets up the environment variables and pkgconfig files for the # specified API version, or, if no version is specified, for the # highest installed vala API version satisfying # VALA_MAX_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND. # Is a no-op if called without --ignore-use when USE=-vala. # Dies if the USE check is passed (or ignored) and a suitable vala # version is not available. vala_src_prepare() { local p d valafoo version ignore_use while [[ $1 ]]; do case $1 in "--ignore-use" ) ignore_use=1 ;; "--vala-api-version" ) shift version=$1 [[ ${version} ]] || die "'--vala-api-version' option requires API version parameter." esac shift done if [[ -z ${ignore_use} ]]; then in_iuse vala && ! use vala && return 0 fi if [[ ${version} ]]; then has_version "dev-lang/vala:${version}" || die "No installed vala:${version}" else version=$(vala_best_api_version) [[ ${version} ]] || die "No installed vala in $(vala_depend)" fi export VALAC=$(type -P valac-${version}) valafoo=$(type -P vala-gen-introspect-${version}) [[ ${valafoo} ]] && export VALA_GEN_INTROSPECT="${valafoo}" valafoo=$(type -P vapigen-${version}) [[ ${valafoo} ]] && export VAPIGEN="${valafoo}" valafoo="${EPREFIX}/usr/share/vala/Makefile.vapigen" [[ -e ${valafoo} ]] && export VAPIGEN_MAKEFILE="${valafoo}" export VAPIGEN_VAPIDIR="${EPREFIX}/usr/share/vala/vapi" mkdir -p "${T}/pkgconfig" || die "mkdir failed" for p in libvala vapigen; do for d in "${EPREFIX}/usr/$(get_libdir)/pkgconfig" "${EPREFIX}/usr/share/pkgconfig"; do if [[ -e ${d}/${p}-${version}.pc ]]; then ln -s "${d}/${p}-${version}.pc" "${T}/pkgconfig/${p}.pc" || die "ln failed" break fi done done : ${PKG_CONFIG_PATH:="${EPREFIX}/usr/$(get_libdir)/pkgconfig:${EPREFIX}/usr/share/pkgconfig"} export PKG_CONFIG_PATH="${T}/pkgconfig:${PKG_CONFIG_PATH}" }