[GN]: BUILD file housecleaning

build/config/android/BUILD.gn

 # Copyright 2014 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/sanitizers/sanitizers.gni")
 import("//build/config/sysroot.gni")
 
 assert(is_android)
 
@@ skipping 97 matching lines @@
     }
     cflags += [
       "-target",
       abi_target,
     ]
     ldflags += [
       "-target",
       abi_target,
     ]
   }
+
+  # Assign any flags set for the C compiler to asmflags so that they are sent
+  # to the assembler.
+  asmflags = cflags
 }
 
 # This is included by reference in the //build/config/compiler:runtime_library
 # config that is applied to all targets. It is here to separate out the logic
 # that is Android-only. Please see that target for advice on what should go in
 # :runtime_library vs. :compiler.
 config("runtime_library") {
   # NOTE: The libc++ header include paths below are specified in cflags
   # rather than include_dirs because they need to come after include_dirs.
   # Think of them like system headers, but don't use '-isystem' because the
@@ skipping 59 matching lines @@
 
   # Clang with libc++ does not require an explicit atomic library reference.
   if (!is_clang) {
     libs += [ "atomic" ]
   }
 }
 
 config("sdk") {
   if (sysroot != "") {
     cflags = [ "--sysroot=" + sysroot ]
+    asmflags = [ "--sysroot=" + sysroot ]
     ldflags = [ "--sysroot=" + sysroot ]
 
     # Need to get some linker flags out of the sysroot.
     sysroot_ld_path = rebase_path("//build/config/linux/sysroot_ld_path.py")
     ldflags += [ exec_script(sysroot_ld_path,
                              [
                                rebase_path("//build/linux/sysroot_ld_path.sh"),
                                sysroot,
                              ],
                              "value") ]
   }
 }
 
 config("executable_config") {
   cflags = [ "-fPIE" ]
+  asmflags = [ "-fPIE" ]
   ldflags = [ "-pie" ]
 }
 
 config("hide_native_jni_exports") {
   ldflags = [ "-Wl,--version-script=" +
               rebase_path("//build/android/android_no_jni_exports.lst") ]
 }