honggyukim / chromium Goto Github PK

diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 6b4eb1f7a08b..54a2474d2d49 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -461,6 +461,10 @@ config("compiler") {
     # Do not use the -pthread ldflag here since it becomes a no-op
     # when using -nodefaultlibs, which would cause an unused argument
     # error.  "-lpthread" is added in //build/config:default_libs.
+
+    if (use_uftrace) {
+      cflags += [ "-g", "-pg", "-fno-omit-frame-pointer" ]
+    }
   }

   # Clang-specific compiler flags setup.
diff --git a/build/config/compiler/compiler.gni b/build/config/compiler/compiler.gni
index 4a6fd985fb47..16ffbc741df4 100644
--- a/build/config/compiler/compiler.gni
+++ b/build/config/compiler/compiler.gni
@@ -66,6 +66,9 @@ declare_args() {
   # It's currently not possible to collect AFDO profiles on anything but
   # x86{,_64}.
   using_mismatched_sample_profile = current_cpu != "x64" && current_cpu != "x86"
+
+  # Enables -g -pg -fno-omit-frame-pointer for uftrace
+  use_uftrace = false
 }

 assert(!is_cfi || use_thin_lto, "CFI requires ThinLTO")

$ cd third_party/ffmpeg
$ git diff
diff --git a/BUILD.gn b/BUILD.gn
index 494d33fc04..256a9b94fd 100755
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -7,6 +7,7 @@ import("ffmpeg_generated.gni")

 import("//build/buildflag_header.gni")
 import("//build/config/sanitizers/sanitizers.gni")
+import("//build/config/compiler/compiler.gni")

 # Path to platform configuration files.
 platform_config_root =
@@ -258,6 +259,10 @@ target(link_target_type, "ffmpeg_internal") {
       "-Wno-deprecated-declarations",
     ]

+    if (use_uftrace) {
+      cflags -= [ "-fomit-frame-pointer" ]
+    }
+
     if (!is_clang) {
       # gcc doesn't have flags for specific warnings, so disable them
       # all.

$ cd third_party/swiftshader
$ git diff
diff --git a/BUILD.gn b/BUILD.gn
index 7af9f6af2..fe77952aa 100644
--- a/BUILD.gn
+++ b/BUILD.gn
@@ -75,6 +75,10 @@ config("swiftshader_config") {
         "-Os",
       ]

+      if (use_uftrace) {
+        cflags -= [ "-fomit-frame-pointer" ]
+      }
+
       defines += [
         "ANGLE_DISABLE_TRACE",
         "NDEBUG",