[PATCH] nativesdk: Set LIBCOVERRIDE to a value

[Richard Purdie <richard.purdie@linuxfoundation.org>]

nativesdk was just unsetting LIBCOVERRIDE however that causes some build failures
for xorg-libs which used a libc override. This adds in a mechanism to force
nativesdk to glibc and give the option of allowing another selection like
uclibc if anyone ever does the work to make it operational.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/meta/classes/nativesdk.bbclass b/meta/classes/nativesdk.bbclass
index 21a69c7..7f94258 100644
--- a/meta/classes/nativesdk.bbclass
+++ b/meta/classes/nativesdk.bbclass
@@ -4,8 +4,9 @@ EXCLUDE_FROM_WORLD = "1"
 
 STAGING_BINDIR_TOOLCHAIN = "${STAGING_DIR_NATIVE}${bindir_native}/${SDK_ARCH}${SDK_VENDOR}-${SDK_OS}"
 
-# we dont want libc-uclibc or libc-glibc to kick in for nativesdk recipes
-LIBCOVERRIDE = ""
+# libc for the SDK can be different to that of the target
+NATIVESDKLIBC ?= "libc-glibc"
+LIBCOVERRIDE = ":${NATIVESDKLIBC}"
 CLASSOVERRIDE = "class-nativesdk"
 
 #