Enable building for ARM with nacl-clang

build_tools/common.sh

 # Copyright (c) 2012 The Native Client Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 #
 # Environment variable NACL_ARCH should be set to one of the following
 # values: i686 x86_64 pnacl arm
 
 
 # NAMING CONVENTION
 # =================
@@ skipping 48 matching lines @@
 
 # For the library path we always explicitly add to the link flags
 # otherwise 'libtool' won't find the libraries correctly.  This
 # is because libtool uses 'gcc -print-search-dirs' which does
 # not honor the external specs file.
 NACLPORTS_LDFLAGS="${NACL_LDFLAGS}"
 NACLPORTS_LDFLAGS+=" -L${NACLPORTS_LIBDIR} -Wl,-rpath-link=${NACLPORTS_LIBDIR}"
 
 # The NaCl version of ARM gcc emits warnings about va_args that
 # are not particularly useful
-if [ "${NACL_ARCH}" = "arm" ]; then
+if [ "${NACL_ARCH}" = "arm" -a "${TOOLCHAIN}" = "newlib" ]; then
   NACLPORTS_CFLAGS="${NACLPORTS_CFLAGS} -Wno-psabi"
   NACLPORTS_CXXFLAGS="${NACLPORTS_CXXFLAGS} -Wno-psabi"
 fi
 
 if [ "${NACL_ARCH}" = "emscripten" ]; then
   NACLPORTS_CFLAGS+=" -Wno-warn-absolute-paths"
   NACLPORTS_CXXFLAGS+=" -Wno-warn-absolute-paths"
 fi
 
 # configure spec for if MMX/SSE/SSE2/Assembly should be enabled/disabled
@@ skipping 1478 matching lines @@
 # These functions are called when this script is imported to do
 # any essential checking/setup operations.
 ######################################################################
 CheckToolchain
 CheckPatchVersion
 PatchSpecsFile
 InjectSystemHeaders
 InstallConfigSite
 GetRevision
 MakeDirs