[OE-core] [PATCH v2] kernel-arch.bbclass: conditional error message

[Juro Bystricky]

The single purpose of "map_kernel_arch" is to set

   export ARCH = "some-arch"

The case when "some-arch" is not a valid Linux architecture results in an error.
This makes sense if the TARGET_OS is Linux, but that is not always the case.
kernel-arch is also inherited by toolchain-script, which may be used to build
toolchains for architectures not supported by Linux.

Rather than modifying toolchain-script to provide its own version of "map_arch"
this patch bypasses the error if the TARGET_OS is not linux.

Signed-off-by: Juro Bystricky <juro.bystricky at intel.com>
---
 meta/classes/kernel-arch.bbclass | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/meta/classes/kernel-arch.bbclass b/meta/classes/kernel-arch.bbclass
index 04c49b9..d036fcf 100644
--- a/meta/classes/kernel-arch.bbclass
+++ b/meta/classes/kernel-arch.bbclass
@@ -32,6 +32,8 @@ def map_kernel_arch(a, d):
     elif re.match('microblazee[bl]', a):        return 'microblaze'
     elif a in valid_archs:                      return a
     else:
+        if not d.getVar("TARGET_OS").startswith("linux"):
+            return a
         bb.error("cannot map '%s' to a linux kernel architecture" % a)
 
 export ARCH = "${@map_kernel_arch(d.getVar('TARGET_ARCH'), d)}"
-- 
2.7.4