native.bbclass: use BUILD_* variables

Instead of replicating the logic for the host compiler naming from bitbake.conf,
use the BUILD_* variables directly.

Also change BUILD_CPP to use gcc -E (which native.bbclass previously used), as
some recipes (e.g. grub-efi) use ${CPP} with multiple input files, which gcc -E
can handle but cpp can't.

(From OE-Core rev: 9237d18964ff0bf76f5c37fca21ab3974d81d0d2)

Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 468b175edc..2a8a37f87b 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -459,7 +459,7 @@ PYTHON = "${@sys.executable}"
 export BUILD_CC = "${CCACHE}${BUILD_PREFIX}gcc ${BUILD_CC_ARCH}"
 export BUILD_CXX = "${CCACHE}${BUILD_PREFIX}g++ ${BUILD_CC_ARCH}"
 export BUILD_FC = "${CCACHE}${BUILD_PREFIX}gfortran ${BUILD_CC_ARCH}"
-export BUILD_CPP = "${BUILD_PREFIX}cpp ${BUILD_CC_ARCH}"
+export BUILD_CPP = "${BUILD_PREFIX}gcc ${BUILD_CC_ARCH} -E"
 export BUILD_LD = "${BUILD_PREFIX}ld ${BUILD_LD_ARCH}"
 export BUILD_CCLD = "${BUILD_PREFIX}gcc ${BUILD_CC_ARCH}"
 export BUILD_AR = "${BUILD_PREFIX}ar"