Pass corresponding C/C++ flags to ObjC/C++

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")
 if (current_cpu == "arm") {
   import("//build/config/arm.gni")
 }
 if (current_cpu == "mipsel" || current_cpu == "mips64el") {
@@ skipping 72 matching lines @@
 #
 # Base compiler configuration.
 #
 # See also "runtime_library" below for related stuff and a discussion about
 # where stuff should go. Put warning related stuff in the "warnings" config.
 
 config("compiler") {
   cflags = []
   cflags_c = []
   cflags_cc = []
+  cflags_objc = []
+  cflags_objcc = []
   ldflags = []
   defines = []
 
   # In general, Windows is totally different, but all the other builds share
   # some common GCC configuration. This section sets up Windows and the common
   # GCC flags, and then we handle the other non-Windows platforms specifically
   # below.
   if (is_win) {
     # Windows compiler flags setup.
     # -----------------------------
@@ skipping 17 matching lines @@
         cflags += [ "-fmsc-version=1800" ]
       } else if (visual_studio_version == "2015") {
         cflags += [ "-fmsc-version=1900" ]
       }
 
       if (current_cpu == "x86") {
         cflags += [ "-m32" ]
       } else {
         cflags += [ "-m64" ]
       }
+
       # TODO(thakis): Remove this once llvm.org/PR24167 is fixed.
       if (is_asan) {
         cflags += [ "/fallback" ]
       }
       if (exec_script("//build/win/use_ansi_codes.py", [], "trim string") ==
           "True") {
         cflags += [
           # cmd.exe doesn't understand ANSI escape codes by default,
           # so only enable them if something emulating them is around.
           "-fansi-escape-codes",
@@ skipping 122 matching lines @@
       common_mac_flags += [
         "-arch",
         "armv7",
       ]
     }
 
     cflags += common_mac_flags
 
     # Without this, the constructors and destructors of a C++ object inside
     # an Objective C struct won't be called, which is very bad.
-    cflags_objcc = [ "-fobjc-call-cxx-cdtors" ]
+    cflags_objcc += [ "-fobjc-call-cxx-cdtors" ]
 
     cflags_c += [ "-std=c99" ]
 
     ldflags += common_mac_flags
   } else if (is_posix) {
     # Non-Mac Posix compiler flags setup.
     # -----------------------------------
     if (enable_profiling && !is_debug) {
       # The GYP build spams this define into every compilation unit, as we do
       # here, but it only appears to be used in base and a couple other places.
@@ skipping 279 matching lines @@
     if (is_clang) {
       if (current_cpu == "arm") {
         cflags += [ "-target arm-linux-androideabi" ]
         ldflags += [ "-target arm-linux-androideabi" ]
       } else if (current_cpu == "x86") {
         cflags += [ "-target x86-linux-androideabi" ]
         ldflags += [ "-target x86-linux-androideabi" ]
       }
     }
   }
+
+  # Pass the same C/C++ flags to the objective C/C++ compiler.
+  cflags_objc += cflags_c
+  cflags_objcc += cflags_cc
 }
 
 config("compiler_arm_fpu") {
   if (current_cpu == "arm" && !is_ios) {
     cflags = [ "-mfpu=$arm_fpu" ]
   }
 }
 
 # runtime_library -------------------------------------------------------------
 #
@@ skipping 669 matching lines @@
       cflags += [ "-gsplit-dwarf" ]
     }
   }
 }
 
 config("no_symbols") {
   if (!is_win) {
     cflags = [ "-g0" ]
   }
 }