meson.eclass: respect PKG_CONFIG_PATH and PKG_CONFIG_LIBDIR

Respect PKG_CONFIG_PATH and PKG_CONFIG_LIBDIR if set before
meson_src_configure.

Add BUILD variants for use in cross-compiles.

Signed-off-by: Mike Gilbert <floppym@gentoo.org>

diff --git a/eclass/meson.eclass b/eclass/meson.eclass
index 773413bb6020f4f5b0f37faef0d9fad18bcf8c5e..2d2685ca72adb77ba0bb3b0ed9e67b8764dcc8ec 100644 (file)
--- a/eclass/meson.eclass
+++ b/eclass/meson.eclass
@@ -193,7 +193,7 @@ _meson_create_cross_file() {
        objcpp_link_args = $(_meson_env_array "${OBJCXXFLAGS} ${LDFLAGS}")
        needs_exe_wrapper = true
        sys_root = '${SYSROOT}'
-       pkg_config_libdir = '${EPREFIX}/usr/$(get_libdir)/pkgconfig'
+       pkg_config_libdir = '${PKG_CONFIG_LIBDIR:-${EPREFIX}/usr/$(get_libdir)/pkgconfig}'
 
        [host_machine]
        system = '${system}'
@@ -242,7 +242,7 @@ _meson_create_native_file() {
        objcpp_args = $(_meson_env_array "${BUILD_OBJCXXFLAGS} ${BUILD_CPPFLAGS}")
        objcpp_link_args = $(_meson_env_array "${BUILD_OBJCXXFLAGS} ${BUILD_LDFLAGS}")
        needs_exe_wrapper = false
-       pkg_config_libdir = '${EPREFIX}/usr/$(get_libdir)/pkgconfig'
+       pkg_config_libdir = '${BUILD_PKG_CONFIG_LIBDIR:-${EPREFIX}/usr/$(get_libdir)/pkgconfig}'
 
        [build_machine]
        system = '${system}'
@@ -294,6 +294,8 @@ meson_src_configure() {
        local BUILD_OBJCFLAGS=${BUILD_OBJCFLAGS}
        local BUILD_OBJCXXFLAGS=${BUILD_OBJCXXFLAGS}
        local BUILD_LDFLAGS=${BUILD_LDFLAGS}
+       local BUILD_PKG_CONFIG_LIBDIR=${BUILD_PKG_CONFIG_LIBDIR}
+       local BUILD_PKG_CONFIG_PATH=${BUILD_PKG_CONFIG_PATH}
 
        if tc-is-cross-compiler; then
                : ${BUILD_CFLAGS:=-O1 -pipe}
@@ -309,6 +311,8 @@ meson_src_configure() {
                : ${BUILD_LDFLAGS:=${LDFLAGS}}
                : ${BUILD_OBJCFLAGS:=${OBJCFLAGS}}
                : ${BUILD_OBJCXXFLAGS:=${OBJCXXFLAGS}}
+               : ${BUILD_PKG_CONFIG_LIBDIR:=${PKG_CONFIG_LIBDIR}}
+               : ${BUILD_PKG_CONFIG_PATH:=${PKG_CONFIG_PATH}}
        fi
 
        local mesonargs=(
@@ -319,8 +323,8 @@ meson_src_configure() {
                --prefix "${EPREFIX}/usr"
                --sysconfdir "${EPREFIX}/etc"
                --wrap-mode nodownload
-               --build.pkg-config-path="${EPREFIX}/usr/share/pkgconfig"
-               --pkg-config-path="${EPREFIX}/usr/share/pkgconfig"
+               --build.pkg-config-path "${BUILD_PKG_CONFIG_PATH:-${EPREFIX}/usr/share/pkgconfig}"
+               --pkg-config-path "${PKG_CONFIG_PATH:-${EPREFIX}/usr/share/pkgconfig}"
                --native-file "$(_meson_create_native_file)"
        )
 
@@ -359,7 +363,7 @@ meson_src_configure() {
        python_export_utf8_locale
 
        # https://bugs.gentoo.org/720818
-       export -n {C,CPP,CXX,F,FC,OBJC,OBJCXX,LD}FLAGS
+       export -n {C,CPP,CXX,F,FC,OBJC,OBJCXX,LD}FLAGS PKG_CONFIG_{LIBDIR,PATH}
 
        echo "${mesonargs[@]}" >&2
        "${mesonargs[@]}" || die