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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 17:32:43 +0000 |
commit | 6bf0a5cb5034a7e684dcc3500e841785237ce2dd (patch) | |
tree | a68f146d7fa01f0134297619fbe7e33db084e0aa /third_party/libwebrtc/build/config/v8_target_cpu.gni | |
parent | Initial commit. (diff) | |
download | thunderbird-upstream.tar.xz thunderbird-upstream.zip |
Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'third_party/libwebrtc/build/config/v8_target_cpu.gni')
-rw-r--r-- | third_party/libwebrtc/build/config/v8_target_cpu.gni | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/config/v8_target_cpu.gni b/third_party/libwebrtc/build/config/v8_target_cpu.gni new file mode 100644 index 0000000000..305981f3fa --- /dev/null +++ b/third_party/libwebrtc/build/config/v8_target_cpu.gni @@ -0,0 +1,61 @@ +# Copyright 2016 The Chromium Authors. All rights reserved. +# Use of this source code is governed by a BSD-style license that can be +# found in the LICENSE file. + +import("//build/config/sanitizers/sanitizers.gni") + +declare_args() { + # This arg is used when we want to tell the JIT-generating v8 code + # that we want to have it generate for an architecture that is different + # than the architecture that v8 will actually run on; we then run the + # code under an emulator. For example, we might run v8 on x86, but + # generate arm code and run that under emulation. + # + # This arg is defined here rather than in the v8 project because we want + # some of the common architecture-specific args (like arm_float_abi or + # mips_arch_variant) to be set to their defaults either if the current_cpu + # applies *or* if the v8_current_cpu applies. + # + # As described below, you can also specify the v8_target_cpu to use + # indirectly by specifying a `custom_toolchain` that contains v8_$cpu in the + # name after the normal toolchain. + # + # For example, `gn gen --args="custom_toolchain=...:clang_x64_v8_arm64"` + # is equivalent to setting --args=`v8_target_cpu="arm64"`. Setting + # `custom_toolchain` is more verbose but makes the toolchain that is + # (effectively) being used explicit. + # + # v8_target_cpu can only be used to target one architecture in a build, + # so if you wish to build multiple copies of v8 that are targeting + # different architectures, you will need to do something more + # complicated involving multiple toolchains along the lines of + # custom_toolchain, above. + v8_target_cpu = "" +} + +if (v8_target_cpu == "") { + if (current_toolchain == "//build/toolchain/linux:clang_x64_v8_arm64") { + v8_target_cpu = "arm64" + } else if (current_toolchain == "//build/toolchain/linux:clang_x86_v8_arm") { + v8_target_cpu = "arm" + } else if (current_toolchain == + "//build/toolchain/linux:clang_x86_v8_mips64el") { + v8_target_cpu = "mips64el" + } else if (current_toolchain == + "//build/toolchain/linux:clang_x86_v8_mipsel") { + v8_target_cpu = "mipsel" + } else if (is_msan) { + # If we're running under a sanitizer, if we configure v8 to generate + # code that will be run under a simulator, then the generated code + # also gets the benefits of the sanitizer. + v8_target_cpu = "arm64" + } else { + v8_target_cpu = target_cpu + } +} + +declare_args() { + # This argument is declared here so that it can be overridden in toolchains. + # It should never be explicitly set by the user. + v8_current_cpu = v8_target_cpu +} |