[OE-core] [PATCH] toolchain-scripts: For non-glibc, pass compiler options to ensure the correct libc selection

[Richard Purdie]

gcc-cross-canadian-<arch> is only built once. It needs to target all the
different libcs, not just the currently selected one. This change ensures
that if another libc is used, the compiler correctly selects the right one.

[YOCTO #8025]

Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>

diff --git a/meta/classes/toolchain-scripts.bbclass b/meta/classes/toolchain-scripts.bbclass
index a6ad041..d0b2b91 100644
--- a/meta/classes/toolchain-scripts.bbclass
+++ b/meta/classes/toolchain-scripts.bbclass
@@ -3,6 +3,8 @@ inherit siteinfo kernel-arch
 # 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
 REAL_MULTIMACH_TARGET_SYS ?= "${MULTIMACH_TARGET_SYS}"
+TARGET_CC_ARCH_append_libc-uclibc = " -muclibc"
+TARGET_CC_ARCH_append_libc-musl = " -mmusl"
 
 # This function creates an environment-setup-script for use in a deployable SDK
 toolchain_create_sdk_env_script () {