GN: Harmonize ARM compiler settings with GYP

build/config/compiler/BUILD.gn

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import("//build/config/android/config.gni")
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/toolchain/ccache.gni")
 
 if (current_cpu == "arm") {
@@ skipping 380 matching lines @@
           # Else building libyuv gives clang's register allocator issues,
           # see llvm.org/PR15798 / crbug.com/233709
           "-momit-leaf-frame-pointer",
 
           # Align the stack on 16-byte boundaries, http://crbug.com/418554.
           "-mstack-alignment=16",
           "-mstackrealign",
         ]
       }
     } else if (current_cpu == "arm") {
+      if (is_clang && !is_android && !is_nacl) {
+        cflags += [
+          "-target",
+          "arm-linux-gnueabihf",
+        ]
+        ldflags += [
+          "-target",
+          "arm-linux-gnueabihf",
+        ]
+
+        # We need to disable clang's builtin assembler as it can't
+        # handle several asm files, crbug.com/124610
+        cflags += [ "-no-integrated-as" ]
+      }
       if (!is_nacl) {
         cflags += [
           "-march=$arm_arch",
           "-mfloat-abi=$arm_float_abi",
         ]
         if (arm_use_thumb) {
           cflags += [ "-mthumb" ]
           if (is_android && !is_clang) {
             # Clang doesn't support this option.
             cflags += [ "-mthumb-interwork" ]
@@ skipping 1076 matching lines @@
   } else if (symbol_level == 1) {
     cflags = minimal_symbols_cflags
     ldflags = minimal_symbols_ldflags
   } else if (symbol_level == 2) {
     cflags = symbols_cflags
     ldflags = symbols_ldflags
   } else {
     assert(false)
   }
 }