Update build file to use asmflags instead of cflags.

dl/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/arm.gni")
 
 declare_args() {
   # Override this value to build with small float FFT tables
   openmax_big_float_fft = true
 }
@@ skipping 181 matching lines @@
 
   # GYP: third_party/openmax_dl/dl/dl.gyp:openmax_dl_neon
   # NEON implementation of FFT. This library is NOT
   # standalone. Applications must link with openmax_dl.
   source_set("openmax_dl_neon") {
     configs += [ ":dl_config" ]
     visibility = [ ":*" ]
 
     if (!arm_use_neon) {
       configs -= [ "//build/config/compiler:compiler_arm_fpu" ]
+      // TODO(andybons): Remove once the toolchains have been updated.

[brettw, 2015/09/28 04:37:50]

# for comments.

Can you also clarify what's to be removed (I assume "cflags").

[Bons, 2015/09/28 04:42:54]

Done.

       cflags = [ "-mfpu=neon" ]
+      asmflags = [ "-mfpu=neon" ]
     }
 
     sources = [
       # Complex 32-bit fixed-point FFT.
       "sp/src/arm/neon/armSP_FFT_CToC_SC32_Radix2_fs_unsafe_s.S",
       "sp/src/arm/neon/armSP_FFT_CToC_SC32_Radix2_ls_unsafe_s.S",
       "sp/src/arm/neon/armSP_FFT_CToC_SC32_Radix2_unsafe_s.S",
       "sp/src/arm/neon/armSP_FFT_CToC_SC32_Radix4_fs_unsafe_s.S",
       "sp/src/arm/neon/armSP_FFT_CToC_SC32_Radix4_ls_unsafe_s.S",
       "sp/src/arm/neon/armSP_FFT_CToC_SC32_Radix4_unsafe_s.S",
@@ skipping 36 matching lines @@
       "sp/src/arm/neon/omxSP_FFTFwd_CToC_FC32_Sfs_s.S",
       "sp/src/arm/neon/omxSP_FFTInv_CToC_FC32_Sfs_s.S",
 
       # Real floating-point FFT
       "sp/src/arm/neon/armSP_FFTInv_CCSToR_F32_preTwiddleRadix2_unsafe_s.S",
       "sp/src/arm/neon/omxSP_FFTFwd_RToCCS_F32_Sfs_s.S",
       "sp/src/arm/neon/omxSP_FFTInv_CCSToR_F32_Sfs_s.S",
     ]
   }
 }