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1 # Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 # Copyright (c) 2013 The Chromium Authors. All rights reserved. |
2 # Use of this source code is governed by a BSD-style license that can be | 2 # Use of this source code is governed by a BSD-style license that can be |
3 # found in the LICENSE file. | 3 # found in the LICENSE file. |
4 | 4 |
5 import("//build/config/android/config.gni") | 5 import("//build/config/android/config.gni") |
6 import("//build/config/chrome_build.gni") | 6 import("//build/config/chrome_build.gni") |
7 import("//build/config/chromecast_build.gni") | 7 import("//build/config/chromecast_build.gni") |
8 import("//build/config/compiler/compiler.gni") | 8 import("//build/config/compiler/compiler.gni") |
9 import("//build/toolchain/cc_wrapper.gni") | 9 import("//build/toolchain/cc_wrapper.gni") |
10 import("//build/toolchain/toolchain.gni") | 10 import("//build/toolchain/toolchain.gni") |
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486 ldflags += [ "-flto=thin" ] | 486 ldflags += [ "-flto=thin" ] |
487 | 487 |
488 # Limit the parallelism to avoid too agressive competition between | 488 # Limit the parallelism to avoid too agressive competition between |
489 # linker jobs. This is still suboptimal to a potential dynamic | 489 # linker jobs. This is still suboptimal to a potential dynamic |
490 # resource allocation scheme, but should be good enough. | 490 # resource allocation scheme, but should be good enough. |
491 if (use_lld) { | 491 if (use_lld) { |
492 ldflags += [ | 492 ldflags += [ |
493 "-Wl,--thinlto-jobs=8", | 493 "-Wl,--thinlto-jobs=8", |
494 "-Wl,--thinlto-cache-dir=" + | 494 "-Wl,--thinlto-cache-dir=" + |
495 rebase_path("$root_out_dir/thinlto-cache", root_build_dir), | 495 rebase_path("$root_out_dir/thinlto-cache", root_build_dir), |
| 496 |
| 497 # Limit the size of the ThinLTO cache to 10% of available disk space. |
| 498 # TODO(pcc): Change the limit from a percentage to an absolute size |
| 499 # (10-20GB) once that feature lands in LLVM. |
| 500 "-Wl,--thinlto-cache-policy,cache_size=10%", |
496 ] | 501 ] |
497 } else { | 502 } else { |
498 ldflags += [ "-Wl,-plugin-opt,jobs=8" ] | 503 ldflags += [ "-Wl,-plugin-opt,jobs=8" ] |
499 } | 504 } |
500 | 505 |
501 # Disable optimization for now because they increase binary size by too | 506 # Disable optimization for now because they increase binary size by too |
502 # much. | 507 # much. |
503 if (is_linux && use_lld) { | 508 if (is_linux && use_lld) { |
504 ldflags += [ "-Wl,--lto-O0" ] | 509 ldflags += [ "-Wl,--lto-O0" ] |
505 } | 510 } |
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1806 | 1811 |
1807 if (is_ios || is_mac) { | 1812 if (is_ios || is_mac) { |
1808 # On Mac and iOS, this enables support for ARC (automatic ref-counting). | 1813 # On Mac and iOS, this enables support for ARC (automatic ref-counting). |
1809 # See http://clang.llvm.org/docs/AutomaticReferenceCounting.html. | 1814 # See http://clang.llvm.org/docs/AutomaticReferenceCounting.html. |
1810 config("enable_arc") { | 1815 config("enable_arc") { |
1811 common_flags = [ "-fobjc-arc" ] | 1816 common_flags = [ "-fobjc-arc" ] |
1812 cflags_objc = common_flags | 1817 cflags_objc = common_flags |
1813 cflags_objcc = common_flags | 1818 cflags_objcc = common_flags |
1814 } | 1819 } |
1815 } | 1820 } |
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