[OE-core] [PATCH] cross.bbclass: Remove usage of host flags for cross-compilation

[Nikolay Merinov]

BUILD_* flags can't be used as TARGET_* flags even for "cross" packages.

gcc-cross buils leaks config.log's through "gcc-stashed-builddir" and
TARGET_* flags to libgcc cross-build through "gcc/libgcc.mvars" file
on "gcc-stashed-builddir". This means that if BUILD_CFLAGS contains
host-specific flags like "-isystem/usr/include" libgcc build will
fail "do_qa_configure" and "do_package_qa" checks.

Remove host-related flags from TARGET_* flags for gcc-cross build.

Signed-off-by: Nikolay Merinov <n.merinov at inango-systems.com>
---
 meta/classes/cross.bbclass | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/meta/classes/cross.bbclass b/meta/classes/cross.bbclass
index 4887317a9a..29d4424829 100644
--- a/meta/classes/cross.bbclass
+++ b/meta/classes/cross.bbclass
@@ -28,10 +28,10 @@ MULTIMACH_TARGET_SYS = "${BUILD_ARCH}${BUILD_VENDOR}-${BUILD_OS}"
 export PKG_CONFIG_DIR = "${exec_prefix}/lib/pkgconfig"
 export PKG_CONFIG_SYSROOT_DIR = ""
 
-TARGET_CPPFLAGS = "${BUILD_CPPFLAGS}"
-TARGET_CFLAGS = "${BUILD_CFLAGS}"
-TARGET_CXXFLAGS = "${BUILD_CXXFLAGS}"
-TARGET_LDFLAGS = "${BUILD_LDFLAGS}"
+TARGET_CPPFLAGS = ""
+TARGET_CFLAGS = ""
+TARGET_CXXFLAGS = ""
+TARGET_LDFLAGS = "-Wl,-O1 ${TARGET_LINK_HASH_STYLE}"
 
 CPPFLAGS = "${BUILD_CPPFLAGS}"
 CFLAGS = "${BUILD_CFLAGS}"
-- 
2.14.2