meson: provide relocation script and native/cross wrappers also for meson-native

When using meson-native directly from bitbake this has no effect and
everything works as before; the use case is being able to build
meson-driven projects from the 'direct SDK' environment. Build systems
like cmake/autotools are entirely driven by environment variables,
but meson needs configuration files, and so this replicates how SDKs
set things up.

In particular, with this change the libepoxy build test from the SDK
test suite is able to pass.

Signed-off-by: Alexander Kanavin <alex@linutronix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 30 insertions, 6 deletions

diff --git a/meta/recipes-devtools/meson/meson/meson-wrapper b/meta/recipes-devtools/meson/meson/meson-wrapper
index 8fafaad975..c62007f507 100755
--- a/meta/recipes-devtools/meson/meson/meson-wrapper
+++ b/meta/recipes-devtools/meson/meson/meson-wrapper
@@ -1,7 +1,7 @@
 #!/bin/sh
 
 if [ -z "$OECORE_NATIVE_SYSROOT" ]; then
-    echo "OECORE_NATIVE_SYSROOT not set; are you in a Yocto SDK environment?" >&2
+    exec "meson.real" "$@"
 fi
 
 if [ -z "$SSL_CERT_DIR" ]; then
diff --git a/meta/recipes-devtools/meson/meson_0.63.0.bb b/meta/recipes-devtools/meson/meson_0.63.0.bb
index 42e64e351f..890f47506f 100644
--- a/meta/recipes-devtools/meson/meson_0.63.0.bb
+++ b/meta/recipes-devtools/meson/meson_0.63.0.bb
@@ -75,7 +75,7 @@ def generate_native_link_template(d):
 
     return repr(val)
 
-do_install:append:class-nativesdk() {
+install_templates() {
     install -d ${D}${datadir}/meson
 
     cat >${D}${datadir}/meson/meson.native.template <<EOF
@@ -117,11 +117,19 @@ needs_exe_wrapper = true
 sys_root = @OECORE_TARGET_SYSROOT
 
 [host_machine]
-system = '${SDK_OS}'
-cpu_family = '${@meson_cpu_family("SDK_ARCH", d)}'
-cpu = '${SDK_ARCH}'
-endian = '${@meson_endian("SDK", d)}'
+system = '$host_system'
+cpu_family = '$host_cpu_family'
+cpu = '$host_cpu'
+endian = '$host_endian'
 EOF
+}
+
+do_install:append:class-nativesdk() {
+    host_system=${SDK_OS}
+    host_cpu_family=${@meson_cpu_family("SDK_ARCH", d)}
+    host_cpu=${SDK_ARCH}
+    host_endian=${@meson_endian("SDK", d)}
+    install_templates
 
     install -d ${D}${SDKPATHNATIVE}/post-relocate-setup.d
     install -m 0755 ${WORKDIR}/meson-setup.py ${D}${SDKPATHNATIVE}/post-relocate-setup.d/
@@ -132,3 +140,19 @@ EOF
 }
 
 FILES:${PN}:append:class-nativesdk = "${datadir}/meson ${SDKPATHNATIVE}"
+
+do_install:append:class-native() {
+    host_system=${HOST_OS}
+    host_cpu_family=${@meson_cpu_family("HOST_ARCH", d)}
+    host_cpu=${HOST_ARCH}
+    host_endian=${@meson_endian("HOST", d)}
+    install_templates
+
+    install -d ${D}${datadir}/post-relocate-setup.d
+    install -m 0755 ${WORKDIR}/meson-setup.py ${D}${datadir}/post-relocate-setup.d/
+
+    # We need to wrap the real meson with a thin wrapper that substitues native/cross files
+    # when running in a direct SDK environment.
+    mv ${D}${bindir}/meson ${D}${bindir}/meson.real
+    install -m 0755 ${WORKDIR}/meson-wrapper ${D}${bindir}/meson
+}