1 files changed, 52 insertions, 0 deletions
diff --git a/external/meta-clang/classes/clang.bbclass b/external/meta-clang/classes/clang.bbclass
new file mode 100644
index 00000000..4d20ff07
--- /dev/null
+++ b/external/meta-clang/classes/clang.bbclass
@@ -0,0 +1,52 @@
+# Add the necessary override
+CC_toolchain-clang  = "${CCACHE}${HOST_PREFIX}clang ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
+CXX_toolchain-clang = "${CCACHE}${HOST_PREFIX}clang++ ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
+CPP_toolchain-clang = "${CCACHE}${HOST_PREFIX}clang ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS} -E"
+CCLD_toolchain-clang = "${CCACHE}${HOST_PREFIX}clang ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
+RANLIB_toolchain-clang = "${HOST_PREFIX}ranlib"
+AR_toolchain-clang = "${HOST_PREFIX}ar"
+NM_toolchain-clang = "${HOST_PREFIX}nm"
+
+THUMB_TUNE_CCARGS_remove_toolchain-clang = "-mthumb-interwork"
+TUNE_CCARGS_remove_toolchain-clang = "-meb"
+TUNE_CCARGS_remove_toolchain-clang = "-mel"
+TUNE_CCARGS_append_toolchain-clang = "${@bb.utils.contains("TUNE_FEATURES", "bigendian", " -mbig-endian", " -mlittle-endian", d)}"
+
+TUNE_CCARGS_remove_toolchain-clang_powerpc = "-mhard-float"
+TUNE_CCARGS_remove_toolchain-clang_powerpc = "-mno-spe"
+
+TUNE_CCARGS_append_toolchain-clang = " --rtlib=compiler-rt -Wno-error=unused-command-line-argument -Qunused-arguments"
+
+TOOLCHAIN_OPTIONS_append_toolchain-clang_class-nativesdk_x86-64 = " -Wl,-dynamic-linker,${base_libdir}/ld-linux-x86-64.so.2"
+TOOLCHAIN_OPTIONS_append_toolchain-clang_class-nativesdk_x86 = " -Wl,-dynamic-linker,${base_libdir}/ld-linux.so.2"
+
+# choose between 'gcc' 'clang' an empty '' can be used as well
+TOOLCHAIN ??= "gcc"
+
+TOOLCHAIN_class-native = "gcc"
+TOOLCHAIN_class-nativesdk = "gcc"
+TOOLCHAIN_class-cross-canadian = "gcc"
+TOOLCHAIN_class-crosssdk = "gcc"
+TOOLCHAIN_class-cross = "gcc"
+
+# -fmacro-prefix-map does not exist in clang 7.x
+DEBUG_PREFIX_MAP_toolchain-clang = " "
+
+OVERRIDES =. "${@['', 'toolchain-${TOOLCHAIN}:']['${TOOLCHAIN}' != '']}"
+OVERRIDES[vardepsexclude] += "TOOLCHAIN"
+
+#DEPENDS_append_toolchain-clang_class-target = " clang-cross-${TARGET_ARCH} "
+#DEPENDS_remove_toolchain-clang_allarch = "clang-cross-${TARGET_ARCH}"
+
+def clang_dep_prepend(d):
+    if not d.getVar('INHIBIT_DEFAULT_DEPS', False):
+        if not oe.utils.inherits(d, 'allarch') :
+            return " clang-cross-${TARGET_ARCH} compiler-rt libcxx"
+    return ""
+
+BASEDEPENDS_remove_toolchain-clang_class-target = "virtual/${TARGET_PREFIX}gcc"
+BASEDEPENDS_append_toolchain-clang_class-target = "${@clang_dep_prepend(d)}"
+
+PREFERRED_PROVIDER_libunwind = "libunwind"
+PREFERRED_PROVIDER_libunwind_mipsarch = "libunwind"
+PREFERRED_PROVIDER_libunwind_toolchain-clang = "libcxx"