1# Copyright 2015 The Chromium Authors. All rights reserved. 2# Use of this source code is governed by a BSD-style license that can be 3# found in the LICENSE file. 4 5import("//build/config/android/config.gni") 6import("//build/config/chrome_build.gni") 7import("//build/config/chromecast_build.gni") 8import("//build/config/sanitizers/sanitizers.gni") 9 10declare_args() { 11 # How many symbols to include in the build. This affects the performance of 12 # the build since the symbols are large and dealing with them is slow. 13 # 2 means regular build with symbols. 14 # 1 means minimal symbols, usually enough for backtraces only. 15 # 0 means no symbols. 16 # -1 means auto-set according to debug/release and platform. 17 symbol_level = -1 18 19 # Compile in such a way as to enable profiling of the generated code. For 20 # example, don't omit the frame pointer and leave in symbols. 21 enable_profiling = false 22 23 # Specify the current PGO phase, only used for the Windows MSVS build. Here's 24 # the different values that can be used: 25 # 0 : Means that PGO is turned off. 26 # 1 : Used during the PGI (instrumentation) phase. 27 # 2 : Used during the PGO (optimization) phase. 28 # 29 # TODO(sebmarchand): Add support for the PGU (update) phase. 30 chrome_pgo_phase = 0 31 32 # Whether or not the official builds should be build with full WPO. 33 full_wpo_on_official = false 34} 35 36# If it wasn't manually set, set to an appropriate default. 37assert(symbol_level >= -1 && symbol_level <= 2, "Invalid symbol_level") 38if (symbol_level == -1) { 39 if (is_android && use_order_profiling) { 40 # With instrumentation enabled, debug info puts libchrome.so over 4gb, which 41 # causes the linker to produce an invalid ELF. http://crbug.com/574476 42 symbol_level = 0 43 } else if (is_win && is_clang && !using_sanitizer) { 44 # TODO(thakis): Remove this again once building with clang/win and 45 # debug info doesn't make link.exe run for hours. 46 symbol_level = 1 47 } else if (!is_linux || is_debug || is_official_build || is_chromecast) { 48 # Linux is slowed by having symbols as part of the target binary, whereas 49 # Mac and Windows have them separate, so in Release Linux, default them off, 50 # but keep them on for Official builds and Chromecast builds. 51 symbol_level = 2 52 } else if (using_sanitizer) { 53 # Sanitizers require symbols for filename suppressions to work. 54 symbol_level = 1 55 } else { 56 symbol_level = 0 57 } 58} 59 60# PGO requires full WPO. 61if (chrome_pgo_phase > 0) { 62 full_wpo_on_official = true 63} 64