gcc-runtime: fix C++ header mapping for n32/x32 tune
The SDK was unable to find the C++ header pieces correctly since it's
using a generic compiler, not one specifically targeting the multilib
vendor prefix and default tune. This adds the right mapping to ensure
SDKs work as expected. And fix problem in below configurations:
multilib configuration 1:
MACHINE="qemumips64"
MULTILIBS ?= "multilib:lib32 multilib:libn32"
DEFAULTTUNE_virtclass-multilib-lib32 ?= "mips"
DEFAULTTUNE_virtclass-multilib-libn32 ?= "mips64-n32"
MULTILIB_GLOBAL_VARIANTS_append = " libn32"
require conf/multilib.conf
ignoring nonexistent directory "<path>/sysroots/mips64-poky-linux/usr/include/c++/8.2.0/mips64-poky-linux/32
multilib configuration 2:
MACHINE="qemumips64"
MULTILIBS = 'multilib:lib64 multilib:lib32'
DEFAULTTUNE = 'mips64-n32'
DEFAULTTUNE_virtclass-multilib-lib64 = 'mips64'
DEFAULTTUNE_virtclass-multilib-lib32 = 'mips32r2'
require conf/multilib.conf
For this configuration:
for target gcc-runtime, need to create symlink like mips64-poly-linux --> mips64-poky-linux-gnu32
for target lib64-gcc-runtime, need to create symlink like mips64-poly-linux/32 --> mips64-pokymllib64-linux
in order to avoid conflict during populate_sdk, create symlink for subfoler bits/ext for target gcc-runtime,
this is ugly, but seems no better way to cover all kinds of configuration.
single lib configuration:
MACHINE="qemumips64"
DEFAULTTUNE = "mips64-n32"
Signed-off-by: Changqing Li <changqing.li@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
