meson.eclass: new eclass for packages using the meson build system

1 files changed, 138 insertions, 0 deletions

diff --git a/eclass/meson.eclass b/eclass/meson.eclass
new file mode 100644
index 000000000000..9a006057e925
--- /dev/null
+++ b/eclass/meson.eclass
@@ -0,0 +1,138 @@
+# Copyright 2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+# @ECLASS: meson.eclass
+# @MAINTAINER:
+# William Hubbs <williamh@gentoo.org>
+# @BLURB: common ebuild functions for meson-based packages
+# @DESCRIPTION:
+# This eclass contains the default phase functions for packages which
+# use the meson build system.
+#
+# @EXAMPLE:
+# Typical ebuild using meson.eclass:
+#
+# @CODE
+# EAPI=6
+#
+# inherit meson
+#
+# ...
+#
+# src_configure() {
+# 	local emesonargs=(
+# 		-Dqt4=$(usex qt4 true false)
+# 		-Dthreads=$(usex threads true false)
+# 		-Dtiff=$(usex tiff true false)
+# 	)
+# 	meson_src_configure
+# }
+#
+# ...
+#
+# @CODE
+
+case ${EAPI:-0} in
+	6) ;;
+	*) die "EAPI=${EAPI} is not supported" ;;
+esac
+
+EXPORT_FUNCTIONS src_configure src_compile src_test src_install
+
+if [[ -z ${_MESON_ECLASS} ]]; then
+_MESON_ECLASS=1
+
+# FIXME: We will need to inherit toolchain-funcs as well to support crossdev.
+inherit ninja-utils
+
+DEPEND=">=dev-util/meson-0.39.1
+	>=dev-util/ninja-1.7.2"
+
+# @ECLASS-VARIABLE: BUILD_DIR
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Build directory, location where all generated files should be placed.
+# If this isn't set, it defaults to ${WORKDIR}/${P}-build.
+
+# @ECLASS-VARIABLE: EMESON_SOURCE
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# The location of the source files for the project;this is the source
+# directory to pass to meson.
+# If this isn't set, it defaults to ${S}
+
+# @VARIABLE: emesonargs
+# @DEFAULT_UNSET
+# @DESCRIPTION:
+# Optional meson arguments as Bash array; this should be defined before
+# calling meson_src_configure.
+
+# create a cross file for meson
+# fixme: This function should write a cross file as described at the
+# following url.
+#	http://mesonbuild.com/Cross-compilation.html
+# _meson_create_cross_file() {
+#	touch "${T}"/meson.crossfile
+# }
+
+# @FUNCTION: meson_src_configure
+# @DESCRIPTION:
+# this is the meson_src_configure function
+meson_src_configure() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	# Common args
+	local mesonargs=(
+		--buildtype plain
+		--libdir "$(get_libdir)"
+		--localstatedir "${EPREFIX}/var/lib"
+		--prefix "${EPREFIX}"/usr
+		--sysconfdir "${EPREFIX}/etc"
+		)
+
+# fixme: uncomment this for crossdev support
+#	if tc-is-cross-compiler; then
+#		_meson_create_cross_file || die "unable to write meson cross file"
+#		mesonargs+=(
+#			--cross-file "${T}"/meson.crossfile
+#		)
+#	fi
+
+	# Append additional arguments from ebuild
+	mesonargs+=("${emesonargs[@]}")
+
+	BUILD_DIR="${BUILD_DIR:-${WORKDIR}/${P}-build}"
+	set -- meson "${mesonargs[@]}" "$@" \
+		"${EMESON_SOURCE:-${S}}" "${BUILD_DIR}"
+	echo "$@"
+	"$@" || die
+}
+
+# @FUNCTION: meson_src_compile
+# @DESCRIPTION:
+# This is the meson_src_compile function.
+meson_src_compile() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	eninja -v -C "${BUILD_DIR}"
+}
+
+# @FUNCTION: meson_src_test
+# @DESCRIPTION:
+# this is the meson_src_test function.
+meson_src_test() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	eninja -v -C "${BUILD_DIR}" test
+}
+
+# @FUNCTION: meson_src_install
+# @DESCRIPTION:
+# this is the meson_src_install function.
+meson_src_install() {
+	debug-print-function ${FUNCNAME} "$@"
+
+	DESTDIR="${D}" eninja -v -C "${BUILD_DIR}" install
+}
+
+fi