clang: Switch c++ default to gnu++14 standard

Using cmdline options -std doesnt always work e.g. boost
where it uses c++ driver (clang++) to invoke compilation
but then passes '-x c' to choose the language for compilation

Which ends in errors like below

error: invalid argument '-std=c++14' not allowed with 'C'

Therefore change the defaults in driver itself to use gnu++14
which is default with g++ from gcc7+ too.

Signed-off-by: Khem Raj <raj.khem@gmail.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/recipes-devtools/clang/common.inc b/recipes-devtools/clang/common.inc
index f5e7acb..3846a1f 100644
--- a/recipes-devtools/clang/common.inc
+++ b/recipes-devtools/clang/common.inc
@@ -18,6 +18,7 @@ CLANGPATCHES = "\
     file://0004-clang-Prepend-trailing-to-sysroot.patch;patchdir=tools/clang \
     file://0005-clang-Look-inside-the-target-sysroot-for-compiler-ru.patch;patchdir=tools/clang \
     file://0006-clang-Define-releative-gcc-installation-dir.patch;patchdir=tools/clang \
+    file://0008-clang-Default-to-gnu-14-for-c-standard.patch;patchdir=tools/clang \
 "
 CLANGPATCHES += "${@'file://0007-clang-Enable-SSP-and-PIE-by-default.patch;patchdir=tools/clang' if '${GCCPIE}' else ''}"