BUILD.gn (1554B)
1 # Copyright 2025 The Chromium Authors 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("//chromium/build/toolchain/gcc_toolchain.gni") 6 7 # This WASM toolchain is NOT to be used to build any Chromium code, 8 # i.e. tests and samples are currently fine. 9 # Usage of this toolchain requires getting explicit approval from 10 # build/OWNERS. 11 gcc_toolchain("wasm") { 12 emscripten_path = "//third_party/emsdk/upstream/emscripten/" 13 _suffix = "" 14 if (host_os == "win") { 15 _suffix = ".bat" 16 } 17 18 cc = rebase_path("$emscripten_path/emcc$_suffix", root_build_dir) 19 cxx = rebase_path("$emscripten_path/em++$_suffix", root_build_dir) 20 ar = rebase_path("$emscripten_path/emar$_suffix", root_build_dir) 21 nm = cc 22 ld = cxx 23 24 toolchain_args = { 25 target_cpu = "wasm" 26 current_os = "emscripten" 27 28 is_clang = true 29 use_remoteexec = false 30 use_debug_fission = false 31 clang_use_chrome_plugins = false 32 use_allocator_shim = false 33 is_component_build = false 34 35 # We do not support clang profiling in the WASM toolchains. 36 use_clang_profiling = false 37 use_clang_coverage = false 38 39 # WASM builds cannot currently use the custom libc++ because 40 # there are custom entry points and defines in the one that is 41 # shipped with emsdk. 42 use_custom_libcxx = false 43 use_custom_libcxx_for_host = false 44 } 45 executable_extension = ".html" 46 link_outputs = [ 47 "{{output_dir}}/{{target_output_name}}.wasm", 48 "{{output_dir}}/{{target_output_name}}.wasm.debug.wasm", 49 ] 50 }