Ben Murdoch | 097c5b2 | 2016-05-18 11:27:45 +0100 | [diff] [blame] | 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 | |
| 5 | import("//build/config/android/config.gni") |
| 6 | import("//build/config/chrome_build.gni") |
| 7 | import("//build/config/chromecast_build.gni") |
| 8 | import("//build/config/sanitizers/sanitizers.gni") |
| 9 | |
| 10 | declare_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. |
| 37 | assert(symbol_level >= -1 && symbol_level <= 2, "Invalid symbol_level") |
| 38 | if (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. |
| 61 | if (chrome_pgo_phase > 0) { |
| 62 | full_wpo_on_official = true |
| 63 | } |