[PATCH v6 3/6] toolchain-scripts: Export meson settings for SDK builds

[Tom Hochstein <tom.hochstein@oss.nxp.com>]

Create a new set of exports for the Meson `host_machine` cross settings.
This allows the target cross file to be created correctly from
meson.cross.template and aligns with meson.bbclass.

Note, one might think that HOST_OS and HOST_ARCH would be appropriate as
inputs here, aligning nicely with the Meson naming. That turns out to be
incorrect since the script is generated in a native/nativesdk build with
HOST_OS and HOST_ARCH set for the "build machine", not the "host
machine", using the Meson terminology. See
https://mesonbuild.com/Cross-compilation.html.

Fixes: [YOCTO #15485]
Signed-off-by: Tom Hochstein <tom.hochstein@oss.nxp.com>
---
 meta/classes-recipe/toolchain-scripts.bbclass | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/meta/classes-recipe/toolchain-scripts.bbclass b/meta/classes-recipe/toolchain-scripts.bbclass
index 9e4320f876..3053cd0f1f 100644
--- a/meta/classes-recipe/toolchain-scripts.bbclass
+++ b/meta/classes-recipe/toolchain-scripts.bbclass
@@ -4,7 +4,7 @@
 # SPDX-License-Identifier: MIT
 #
 
-inherit toolchain-scripts-base siteinfo kernel-arch
+inherit toolchain-scripts-base siteinfo kernel-arch meson-routines
 
 # We want to be able to change the value of MULTIMACH_TARGET_SYS, because it
 # doesn't always match our expectations... but we default to the stock value
@@ -72,6 +72,10 @@ toolchain_create_sdk_env_script () {
 	echo 'export OECORE_TARGET_OS="${TARGET_OS}"' >>$script
 	echo 'export OECORE_TARGET_BITS="${@siteinfo_with_prefix(d, 'bit-')}"' >>$script
 	echo 'export OECORE_TARGET_ENDIAN="${@siteinfo_with_prefix(d, 'endian-')}"' >>$script
+	echo 'export OECORE_MESON_HOST_SYSTEM="${@meson_operating_system('TARGET_OS', d)}"' >>$script
+	echo 'export OECORE_MESON_HOST_CPU_FAMILY="${@meson_cpu_family('TARGET_ARCH', d)}"' >>$script
+	echo 'export OECORE_MESON_HOST_CPU="${TARGET_ARCH}"' >>$script
+	echo 'export OECORE_MESON_HOST_ENDIAN="${@meson_endian('TARGET', d)}"' >>$script
 
 	echo 'unset command_not_found_handle' >> $script
 
@@ -101,6 +105,10 @@ toolchain_create_tree_env_script () {
 	echo 'export OECORE_TARGET_OS="${TARGET_OS}"' >>$script
 	echo 'export OECORE_TARGET_BITS="${@siteinfo_with_prefix(d, 'bit-')}"' >>$script
 	echo 'export OECORE_TARGET_ENDIAN="${@siteinfo_with_prefix(d, 'endian-')}"' >>$script
+	echo 'export OECORE_MESON_HOST_SYSTEM="${@meson_operating_system('TARGET_OS', d)}"' >>$script
+	echo 'export OECORE_MESON_HOST_CPU_FAMILY="${@meson_cpu_family('TARGET_ARCH', d)}"' >>$script
+	echo 'export OECORE_MESON_HOST_CPU="${TARGET_ARCH}"' >>$script
+	echo 'export OECORE_MESON_HOST_ENDIAN="${@meson_endian('TARGET', d)}"' >>$script
 
 	toolchain_shared_env_script
 
-- 
2.34.1