Split targets mixing .c and .cc sources.

webrtc/modules/audio_processing/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("//build/config/arm.gni")
 import("//third_party/protobuf/proto_library.gni")
@@ skipping 17 matching lines @@
     "aec/echo_cancellation.h",
     "aecm/aecm_core.cc",
     "aecm/aecm_core.h",
     "aecm/echo_control_mobile.cc",
     "aecm/echo_control_mobile.h",
     "agc/agc.cc",
     "agc/agc.h",
     "agc/agc_manager_direct.cc",
     "agc/agc_manager_direct.h",
     "agc/gain_map_internal.h",
-    "agc/legacy/analog_agc.c",
-    "agc/legacy/analog_agc.h",
-    "agc/legacy/digital_agc.c",
-    "agc/legacy/digital_agc.h",
-    "agc/legacy/gain_control.h",
     "agc/loudness_histogram.cc",
     "agc/loudness_histogram.h",
     "agc/utility.cc",
     "agc/utility.h",
     "audio_buffer.cc",
     "audio_buffer.h",
     "audio_processing_impl.cc",
     "audio_processing_impl.h",
     "beamformer/array_util.cc",
     "beamformer/array_util.h",
@@ skipping 107 matching lines @@
     "vad/voice_gmm_tables.h",
     "voice_detection_impl.cc",
     "voice_detection_impl.h",
   ]
 
   defines = []
   deps = [
     "../..:webrtc_common",
     "../audio_coding:isac",
   ]
+  public_deps = [
+    ":audio_processing_c",
+  ]
 
   if (apm_debug_dump) {
     defines += [ "WEBRTC_APM_DEBUG_DUMP=1" ]
   } else {
     defines += [ "WEBRTC_APM_DEBUG_DUMP=0" ]
   }
 
   if (aec_untrusted_delay_for_testing) {
     defines += [ "WEBRTC_UNTRUSTED_DELAY" ]
   }
@@ skipping 10 matching lines @@
       "intelligibility/intelligibility_enhancer.h",
       "intelligibility/intelligibility_utils.cc",
       "intelligibility/intelligibility_utils.h",
     ]
   } else {
     defines += [ "WEBRTC_INTELLIGIBILITY_ENHANCER=0" ]
   }
 
   if (rtc_prefer_fixed_point) {
     defines += [ "WEBRTC_NS_FIXED" ]
-    sources += [
-      "ns/noise_suppression_x.c",
-      "ns/noise_suppression_x.h",
-      "ns/nsx_core.c",
-      "ns/nsx_core.h",
-      "ns/nsx_defines.h",
-    ]
-    if (current_cpu == "mipsel") {
-      sources += [ "ns/nsx_core_mips.c" ]
-    } else {
-      sources += [ "ns/nsx_core_c.c" ]
-    }
   } else {
     defines += [ "WEBRTC_NS_FLOAT" ]
-    sources += [
-      "ns/defines.h",
-      "ns/noise_suppression.c",
-      "ns/noise_suppression.h",
-      "ns/ns_core.c",
-      "ns/ns_core.h",
-      "ns/windows_private.h",
-    ]
   }
 
   if (current_cpu == "x86" || current_cpu == "x64") {
     deps += [ ":audio_processing_sse2" ]
   }
 
   if (rtc_build_with_neon) {
     deps += [ ":audio_processing_neon" ]
   }
 
@@ skipping 12 matching lines @@
   # TODO(jschuh): Bug 1348: fix this warning.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 
   deps += [
     "../../base:rtc_base_approved",
     "../../common_audio",
     "../../system_wrappers",
   ]
 }
 
+rtc_source_set("audio_processing_c") {
+  visibility = [ ":*" ]  # Only targets in this file can depend on this.
+  sources = [
+    "agc/legacy/analog_agc.c",
+    "agc/legacy/analog_agc.h",
+    "agc/legacy/digital_agc.c",
+    "agc/legacy/digital_agc.h",
+    "agc/legacy/gain_control.h",
+  ]
+
+  if (rtc_prefer_fixed_point) {
+    sources += [
+      "ns/noise_suppression_x.c",
+      "ns/noise_suppression_x.h",
+      "ns/nsx_core.c",
+      "ns/nsx_core.h",
+      "ns/nsx_defines.h",
+    ]
+    if (current_cpu == "mipsel") {
+      sources += [ "ns/nsx_core_mips.c" ]
+    } else {
+      sources += [ "ns/nsx_core_c.c" ]
+    }
+  } else {
+    sources += [
+      "ns/defines.h",
+      "ns/noise_suppression.c",
+      "ns/noise_suppression.h",
+      "ns/ns_core.c",
+      "ns/ns_core.h",
+      "ns/windows_private.h",
+    ]
+  }
+
+  deps = [
+    "../../base:rtc_base_approved",
+    "../../common_audio",
+    "../../system_wrappers",
+  ]
+}
+
 if (rtc_enable_protobuf) {
   proto_library("audioproc_debug_proto") {
     sources = [
       "debug.proto",
     ]
 
     proto_out_dir = "webrtc/modules/audio_processing"
   }
 }
 
@@ skipping 15 matching lines @@
       defines = [ "WEBRTC_APM_DEBUG_DUMP=0" ]
     }
   }
 }
 
 if (rtc_build_with_neon) {
   rtc_static_library("audio_processing_neon") {
     sources = [
       "aec/aec_core_neon.cc",
       "aecm/aecm_core_neon.cc",
-      "ns/nsx_core_neon.c",
       "utility/ooura_fft_neon.cc",
       "utility/ooura_fft_tables_neon_sse2.h",
     ]
 
     if (current_cpu != "arm64") {
       # Enable compilation for the NEON instruction set. This is needed
       # since //build/config/arm.gni only enables NEON for iOS, not Android.
       # This provides the same functionality as webrtc/build/arm_neon.gypi.
       suppressed_configs += [ "//build/config/compiler:compiler_arm_fpu" ]
       cflags = [ "-mfpu=neon" ]
     }
 
     # Disable LTO on NEON targets due to compiler bug.
     # TODO(fdegans): Enable this. See crbug.com/408997.
     if (rtc_use_lto) {
       cflags -= [
         "-flto",
         "-ffat-lto-objects",
       ]
     }
 
     deps = [
       "../../common_audio",
     ]
+    public_deps = [
+      ":audio_processing_neon_c",
+    ]
 
     if (apm_debug_dump) {
       defines = [ "WEBRTC_APM_DEBUG_DUMP=1" ]
     } else {
       defines = [ "WEBRTC_APM_DEBUG_DUMP=0" ]
     }
   }
+
+  rtc_static_library("audio_processing_neon_c") {
+    sources = [
+      "ns/nsx_core_neon.c",
+    ]
+
+    if (current_cpu != "arm64") {
+      # Enable compilation for the NEON instruction set. This is needed
+      # since //build/config/arm.gni only enables NEON for iOS, not Android.
+      # This provides the same functionality as webrtc/build/arm_neon.gypi.
+      suppressed_configs += [ "//build/config/compiler:compiler_arm_fpu" ]
+      cflags = [ "-mfpu=neon" ]
+    }
+
+    # Disable LTO on NEON targets due to compiler bug.
+    # TODO(fdegans): Enable this. See crbug.com/408997.
+    if (rtc_use_lto) {
+      cflags -= [
+        "-flto",
+        "-ffat-lto-objects",
+      ]
+    }
+  }
 }
 
 if (rtc_include_tests) {
   group("audio_processing_tests") {
     testonly = true
     public_deps = [
       ":audioproc_f",
       ":audioproc_test_utils",
       ":click_annotate",
       ":nonlinear_beamformer_test",
@@ skipping 143 matching lines @@
         "test/protobuf_utils.cc",
         "test/protobuf_utils.h",
       ]
 
       deps = [
         ":audioproc_debug_proto",
       ]
     }
   }
 }