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Revised proposal with suggestions from Nirbheek. VALA_API_VERSION has |
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been split into max and min to make it easier for packages to depend on |
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a range of vala slots. |
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|
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# Copyright 1999-2012 Gentoo Foundation |
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# Distributed under the terms of the GNU General Public License v2 |
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# $Header: $ |
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|
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# @ECLASS: vala.eclass |
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# @MAINTAINER: |
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# gnome@g.o |
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# @AUTHOR: |
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# Alexandre Rostovtsev <tetromino@g.o> |
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# @BLURB: Sets up the environment for using a specific version of vala. |
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# @DESCRIPTION: |
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# This eclass sets up commonly used environment variables for using a specific |
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# version of dev-lang/vala to configure and build a package. It is needed for |
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# packages whose build systems assume the existence of certain unversioned vala |
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# executables, pkgconfig files, etc., which Gentoo does not provide. |
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# |
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# This eclass provides one phase function: src_prepare. |
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|
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inherit multilib |
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|
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case "${EAPI:-0}" in |
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0) die "EAPI=0 is not supported" ;; |
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1) ;; |
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*) EXPORT_FUNCTIONS src_prepare ;; |
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esac |
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|
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# @ECLASS-VARIABLE: VALA_MIN_API_VERSION |
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# @DEFAULT_UNSET |
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# @DESCRIPTION: |
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# Minimum vala API version (e.g. 0.16). |
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VALA_MIN_API_VERSION=${VALA_MIN_API_VERSION:-0.10} |
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|
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# @ECLASS-VARIABLE: VALA_MAX_API_VERSION |
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# @DEFAULT_UNSET |
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# @DESCRIPTION: |
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# Maximum vala API version (e.g. 0.18). |
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VALA_MAX_API_VERSION=${VALA_MAX_API_VERSION:-0.18} |
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|
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# @ECLASS-VARIABLE: VALA_USE_DEPEND |
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# @DEFAULT_UNSET |
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# @DESCRIPTION: |
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# USE dependencies that vala must be built with (e.g. vapigen). |
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|
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# @FUNCTION: vala_api_versions |
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# @DESCRIPTION: |
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# Outputs a list of vala API versions from VALA_MAX_API_VERSION down to |
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# VALA_MIN_API_VERSION. |
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vala_api_versions() { |
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eval "echo 0.{${VALA_MAX_API_VERSION#0.}..${VALA_MIN_API_VERSION#0.}..2}" |
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} |
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|
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# @FUNCTION: vala_depend |
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# @DESCRIPTION: |
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# Outputs a ||-dependency string on vala from VALA_MAX_API_VERSION down to |
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# VALA_MIN_API_VERSION |
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vala_depend() { |
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local u v versions=$(vala_api_versions) |
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[[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}]" |
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|
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echo -n "|| (" |
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for v in ${versions}; do |
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echo -n " dev-lang/vala:${v}${u}" |
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done |
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echo " )" |
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} |
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|
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# @FUNCTION: vala_best_api_version |
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# @DESCRIPTION: |
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# Returns the highest installed vala API version satisfying |
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# VALA_MAX_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND. |
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vala_best_api_version() { |
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local u v |
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[[ ${VALA_USE_DEPEND} ]] && u="[${VALA_USE_DEPEND}]" |
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for v in $(vala_api_versions); do |
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has_version "dev-lang/vala:${v}${u}" && echo "${v}" && return |
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done |
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} |
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|
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# @FUNCTION: vala_src_prepare |
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# @USAGE: [--vala-api-version api_version] |
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# @DESCRIPTION: |
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# Sets up the environment variables and pkgconfig files for the |
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# specified API version, or, if no version is specified, for the |
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# highest installed vala API version satisfying |
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# VALA_MIN_API_VERSION, VALA_MIN_API_VERSION, and VALA_USE_DEPEND. |
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vala_src_prepare() { |
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local p d valafoo version |
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|
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if [[ $1 = "--vala-api-version" ]]; then |
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version=$2 |
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[[ ${version} ]] || die "'--vala-api-version' option requires API version parameter." |
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else |
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version=$(vala_best_api_version) |
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[[ ${version} ]] || die "No installed vala in $(vala_depend)" |
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fi |
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|
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export VALAC=$(type -P valac-${version}) |
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|
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valafoo=$(type -P vala-gen-introspect-${VALA_API_VERSION}) |
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[[ ${valafoo} ]] && export VALA_GEN_INTROSPECT=$(type -P vala-gen-introspect-${version}) |
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|
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valafoo=$(type -P vapigen-${VALA_API_VERSION}) |
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[[ ${valafoo} ]] && export VAPIGEN="${valafoo}" |
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|
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valafoo="${EPREFIX}/usr/share/vala/Makefile.vapigen" |
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[[ -e ${valafoo} ]] && export VAPIGEN_MAKEFILE="${valafoo}" |
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|
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export VAPIGEN_VAPIDIR="${EPREFIX}/usr/share/vala/vapi" |
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|
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mkdir -p "${T}/pkgconfig" || die "mkdir failed" |
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for p in libvala vapigen; do |
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for d in "${EPREFIX}/usr/$(get_libdir)/pkgconfig" "${EPREFIX}/usr/share/pkgconfig"; do |
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if [[ -e ${d}/${p}-${VALA_API_VERSION}.pc ]]; then |
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ln -s "${d}/${p}-${VALA_API_VERSION}.pc" "${T}/pkgconfig/${p}.pc" || die "ln failed" |
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break |
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fi |
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done |
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done |
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: ${PKG_CONFIG_PATH:="${EPREFIX}/usr/$(get_libdir)/pkgconfig:${EPREFIX}/usr/share/pkgconfig"} |
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export PKG_CONFIG_PATH="${T}/pkgconfig:${PKG_CONFIG_PATH}" |
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} |