diff options
Diffstat (limited to 'third_party/libwebrtc/build/toolchain/apple/toolchain.gni')
| -rw-r--r-- | third_party/libwebrtc/build/toolchain/apple/toolchain.gni | 611 |
1 files changed, 611 insertions, 0 deletions
diff --git a/third_party/libwebrtc/build/toolchain/apple/toolchain.gni b/third_party/libwebrtc/build/toolchain/apple/toolchain.gni new file mode 100644 index 0000000000..f914d8d400 --- /dev/null +++ b/third_party/libwebrtc/build/toolchain/apple/toolchain.gni @@ -0,0 +1,611 @@ +# Copyright (c) 2013 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. + +# TODO(brettw) Use "gcc_toolchain.gni" like the Linux toolchains. This requires +# some enhancements since the commands on Mac are slightly different than on +# Linux. + +import("//build/config/apple/symbols.gni") +import("//build/config/clang/clang.gni") +import("//build/config/compiler/compiler.gni") +import("//build/config/coverage/coverage.gni") +import("//build/config/rust.gni") +import("//build/toolchain/cc_wrapper.gni") +import("//build/toolchain/goma.gni") +import("//build/toolchain/rbe.gni") +import("//build/toolchain/toolchain.gni") + +assert((target_os == "ios" && host_os == "mac") || host_os != "win") + +declare_args() { + # This controls whether whole module optimization is enabled when building + # Swift modules. If enabled, the compiler will compile the module as one + # unit, generating just one single object file. Otherwise, it will generate + # one object file per .swift file. If unspecified, will default to "true" + # for official builds, and "false" for all other builds. + swift_whole_module_optimization = -1 +} + +if (swift_whole_module_optimization == -1) { + swift_whole_module_optimization = is_official_build +} + +# When implementing tools using Python scripts, a TOOL_VERSION=N env +# variable is placed in front of the command. The N should be incremented +# whenever the script is changed, so that the build system rebuilds all +# edges that utilize the script. Ideally this should be changed to use +# proper input-dirty checking, but that could be expensive. Instead, use a +# script to get the tool scripts' modification time to use as the version. +# This won't cause a re-generation of GN files when the tool script changes +# but it will cause edges to be marked as dirty if the ninja files are +# regenerated. See https://crbug.com/619083 for details. A proper fix +# would be to have inputs to tools (https://crbug.com/621119). +tool_versions = + exec_script("get_tool_mtime.py", + rebase_path([ + "//build/toolchain/apple/filter_libtool.py", + "//build/toolchain/apple/linker_driver.py", + "//build/toolchain/ios/compile_xcassets.py", + "//build/toolchain/ios/swiftc.py", + ], + root_build_dir), + "trim scope") + +# Shared toolchain definition. Invocations should set current_os to set the +# build args in this definition. +template("apple_toolchain") { + toolchain(target_name) { + # When invoking this toolchain not as the default one, these args will be + # passed to the build. They are ignored when this is the default toolchain. + assert(defined(invoker.toolchain_args), + "Toolchains must declare toolchain_args") + toolchain_args = { + # Populate toolchain args from the invoker. + forward_variables_from(invoker.toolchain_args, "*") + + # The host toolchain value computed by the default toolchain's setup + # needs to be passed through unchanged to all secondary toolchains to + # ensure that it's always the same, regardless of the values that may be + # set on those toolchains. + host_toolchain = host_toolchain + } + + # When the invoker has explicitly overridden use_goma or cc_wrapper in the + # toolchain args, use those values, otherwise default to the global one. + # This works because the only reasonable override that toolchains might + # supply for these values are to force-disable them. + if (defined(toolchain_args.use_remoteexec)) { + toolchain_uses_remoteexec = toolchain_args.use_remoteexec + } else { + toolchain_uses_remoteexec = use_remoteexec + } + if (defined(toolchain_args.use_goma)) { + toolchain_uses_goma = toolchain_args.use_goma + } else { + toolchain_uses_goma = use_goma + } + if (defined(toolchain_args.cc_wrapper)) { + toolchain_cc_wrapper = toolchain_args.cc_wrapper + } else { + toolchain_cc_wrapper = cc_wrapper + } + assert(!(toolchain_uses_remoteexec && toolchain_uses_goma), + "Goma and re-client can't be used together.") + assert(!(toolchain_cc_wrapper != "" && toolchain_uses_remoteexec), + "re-client and cc_wrapper can't be used together.") + assert(!(toolchain_cc_wrapper != "" && toolchain_uses_goma), + "Goma and cc_wrapper can't be used together.") + + if (defined(toolchain_args.use_lld)) { + toolchain_uses_lld = toolchain_args.use_lld + } else { + toolchain_uses_lld = use_lld + } + if (defined(toolchain_args.use_xcode_clang)) { + toolchain_uses_xcode_clang = toolchain_args.use_xcode_clang + } else { + toolchain_uses_xcode_clang = use_xcode_clang + } + + # Supports building with the version of clang shipped with Xcode when + # targeting iOS by not respecting clang_base_path. + if (toolchain_uses_xcode_clang) { + prefix = invoker.bin_path + } else { + prefix = rebase_path("$clang_base_path/bin/", root_build_dir) + } + + _cc = "${prefix}clang" + _cxx = "${prefix}clang++" + + swiftmodule_switch = "-Wl,-add_ast_path," + + # Compute the compiler prefix. + if (toolchain_uses_remoteexec) { + if (defined(toolchain_args.rbe_cc_cfg_file)) { + toolchain_rbe_cc_cfg_file = toolchain_args.rbe_cc_cfg_file + } else { + toolchain_rbe_cc_cfg_file = rbe_cc_cfg_file + } + + # C/C++ (clang) rewrapper prefix to use when use_remoteexec is true. + compiler_prefix = "${rbe_bin_dir}/rewrapper -cfg=${toolchain_rbe_cc_cfg_file} -exec_root=${rbe_exec_root} " + } else if (toolchain_uses_goma) { + assert(toolchain_cc_wrapper == "", + "Goma and cc_wrapper can't be used together.") + compiler_prefix = "$goma_dir/gomacc " + if (use_goma_rust) { + rust_compiler_prefix = compiler_prefix + } + } else if (toolchain_cc_wrapper != "") { + compiler_prefix = toolchain_cc_wrapper + " " + } else { + compiler_prefix = "" + } + + cc = compiler_prefix + _cc + cxx = compiler_prefix + _cxx + ld = _cxx + + # Set the explicit search path for clang++ so it uses the right linker + # binary. + if (!toolchain_uses_lld) { + ld += " -B " + invoker.bin_path + } + + if (defined(toolchain_args.coverage_instrumentation_input_file)) { + toolchain_coverage_instrumentation_input_file = + toolchain_args.coverage_instrumentation_input_file + } else { + toolchain_coverage_instrumentation_input_file = + coverage_instrumentation_input_file + } + _use_clang_coverage_wrapper = + toolchain_coverage_instrumentation_input_file != "" + if (_use_clang_coverage_wrapper) { + _coverage_wrapper = + rebase_path("//build/toolchain/clang_code_coverage_wrapper.py", + root_build_dir) + " --files-to-instrument=" + + rebase_path(toolchain_coverage_instrumentation_input_file, + root_build_dir) + " --target-os=" + target_os + cc = "$python_path $_coverage_wrapper ${cc}" + cxx = "$python_path $_coverage_wrapper ${cxx}" + } + + linker_driver = + "TOOL_VERSION=${tool_versions.linker_driver} " + + rebase_path("//build/toolchain/apple/linker_driver.py", root_build_dir) + + # Specify an explicit path for the strip binary. + _strippath = invoker.bin_path + "strip" + linker_driver += " -Wcrl,strippath," + _strippath + + # This makes the linker set timestamps in Mach-O files to 0. + linker_driver += " --deterministic" + + # On iOS, the final applications are assembled using lipo (to support fat + # builds). The correct flags are passed to the linker_driver.py script + # directly during the lipo call. The test is against the target_os because + # there is no need to create .dSYMs for targets compiled for the host. + if (defined(invoker.strip_with_lipo) && invoker.strip_with_lipo) { + _enable_dsyms = false + _save_unstripped_output = false + } else { + _enable_dsyms = enable_dsyms + _save_unstripped_output = save_unstripped_output + } + + # Make these apply to all tools below. + lib_switch = "-l" + lib_dir_switch = "-L" + + # Object files go in this directory. Use label_name instead of + # target_output_name since labels will generally have no spaces and will be + # unique in the directory. + object_subdir = "{{target_out_dir}}/{{label_name}}" + + # If dSYMs are enabled, this flag will be added to the link tools. + if (_enable_dsyms) { + dsym_switch = " -Wcrl,dsym,{{root_out_dir}} " + dsym_switch += "-Wcrl,dsymutilpath," + + rebase_path("//tools/clang/dsymutil/bin/dsymutil", + root_build_dir) + " " + + dsym_output_dir = + "{{root_out_dir}}/{{target_output_name}}{{output_extension}}.dSYM" + dsym_output = [ + "$dsym_output_dir/Contents/Info.plist", + "$dsym_output_dir/Contents/Resources/DWARF/" + + "{{target_output_name}}{{output_extension}}", + ] + } else { + dsym_switch = "" + } + + if (_save_unstripped_output) { + _unstripped_output = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}.unstripped" + } + + if (toolchain_has_rust) { + if (!defined(rust_compiler_prefix)) { + rust_compiler_prefix = "" + } + rustc = "$rust_compiler_prefix${rust_prefix}rustc" + + # Ideally, we'd add -Clink-args=\"{{ldflags}}\" to each of the Rust + # tools below which may link (i.e. rust_bin, rust_cdylib, rust_macro). + # However, it seems -fuse-ld=lld causes difficulties. + + tool("rust_staticlib") { + rust_outfile = "{{target_out_dir}}/{{crate_name}}.a" + depfile = "{{output}}.d" + command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -o $rust_outfile" + description = "RUST $rust_outfile" + outputs = [ rust_outfile ] + } + + tool("rust_rlib") { + rust_outfile = "{{target_out_dir}}/lib{{crate_name}}.rlib" + depfile = "{{output}}.d" + command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -o $rust_outfile" + description = "RUST $rust_outfile" + outputs = [ rust_outfile ] + } + + if (rustc_can_link) { + tool("rust_bin") { + rust_outfile = "{{root_out_dir}}/{{crate_name}}" + depfile = "{{output}}.d" + command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -o $rust_outfile" + description = "RUST $rust_outfile" + outputs = [ rust_outfile ] + } + + tool("rust_cdylib") { + rust_outfile = "{{target_out_dir}}/lib{{crate_name}}.dylib" + depfile = "{{output}}.d" + command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -o $rust_outfile" + description = "RUST $rust_outfile" + outputs = [ rust_outfile ] + } + + tool("rust_macro") { + rust_outfile = "{{target_out_dir}}/lib{{crate_name}}.dylib" + depfile = "{{output}}.d" + command = "$rustc $rustc_common_args --emit=dep-info=$depfile,link -o $rust_outfile" + description = "RUST $rust_outfile" + outputs = [ rust_outfile ] + } + } + } + + tool("cc") { + depfile = "{{output}}.d" + precompiled_header_type = "gcc" + command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}" + depsformat = "gcc" + description = "CC {{output}}" + outputs = [ "$object_subdir/{{source_name_part}}.o" ] + } + + tool("cxx") { + depfile = "{{output}}.d" + precompiled_header_type = "gcc" + command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}" + depsformat = "gcc" + description = "CXX {{output}}" + outputs = [ "$object_subdir/{{source_name_part}}.o" ] + } + + tool("asm") { + # For GCC we can just use the C compiler to compile assembly. + depfile = "{{output}}.d" + command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}" + depsformat = "gcc" + description = "ASM {{output}}" + outputs = [ "$object_subdir/{{source_name_part}}.o" ] + } + + tool("objc") { + depfile = "{{output}}.d" + precompiled_header_type = "gcc" + command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{framework_dirs}} {{cflags}} {{cflags_objc}} -c {{source}} -o {{output}}" + depsformat = "gcc" + description = "OBJC {{output}}" + outputs = [ "$object_subdir/{{source_name_part}}.o" ] + } + + tool("objcxx") { + depfile = "{{output}}.d" + precompiled_header_type = "gcc" + command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{framework_dirs}} {{cflags}} {{cflags_objcc}} -c {{source}} -o {{output}}" + depsformat = "gcc" + description = "OBJCXX {{output}}" + outputs = [ "$object_subdir/{{source_name_part}}.o" ] + } + + tool("alink") { + rspfile = "{{output}}.rsp" + + if (!toolchain_uses_lld) { + # Note about -filelist: Apple's linker reads the file list file and + # interprets each newline-separated chunk of text as a file name. It + # doesn't do the things one would expect from the shell like unescaping + # or handling quotes. In contrast, when Ninja finds a file name with + # spaces, it single-quotes them in $inputs_newline as it would normally + # do for command-line arguments. Thus any source names with spaces, or + # label names with spaces (which GN bases the output paths on) will be + # corrupted by this process. Don't use spaces for source files or + # labels. + rspfile_content = "{{inputs_newline}}" + + script = rebase_path("//build/toolchain/apple/filter_libtool.py", + root_build_dir) + + # Specify explicit path for libtool. + libtool = invoker.bin_path + "libtool" + command = "rm -f {{output}} && TOOL_VERSION=${tool_versions.filter_libtool} $python_path $script $libtool -static -D {{arflags}} -o {{output}} -filelist $rspfile" + description = "LIBTOOL-STATIC {{output}}" + } else { + rspfile_content = "{{inputs}}" + ar = "${prefix}llvm-ar" + command = "\"$ar\" {{arflags}} -r -c -s -D {{output}} \"@$rspfile\"" + + # Remove the output file first so that ar doesn't try to modify the + # existing file. + command = "rm -f {{output}} && $command" + description = "AR {{output}}" + } + outputs = [ "{{output_dir}}/{{target_output_name}}{{output_extension}}" ] + default_output_dir = "{{target_out_dir}}" + default_output_extension = ".a" + output_prefix = "lib" + } + + tool("solink") { + # E.g. "./libfoo.dylib": + dylib = "{{output_dir}}/{{target_output_name}}{{output_extension}}" + rspfile = dylib + ".rsp" + pool = "//build/toolchain:link_pool($default_toolchain)" + + # These variables are not built into GN but are helpers that implement + # (1) linking to produce a .dylib, (2) extracting the symbols from that + # file to a temporary file, (3) if the temporary file has differences from + # the existing .TOC file, overwrite it, otherwise, don't change it. + # + # As a special case, if the library reexports symbols from other dynamic + # libraries, we always update the .TOC and skip the temporary file and + # diffing steps, since that library always needs to be re-linked. + tocname = dylib + ".TOC" + temporary_tocname = dylib + ".tmp" + + # Use explicit paths to binaries. The binaries present on the default + # search path in /usr/bin are thin wrappers around xcrun, which requires a + # full CommandLineTools or Xcode install, and still may not choose the + # appropriate binary if there are multiple installs. + if (host_os == "mac") { + nm = invoker.bin_path + "nm" + otool = invoker.bin_path + "otool" + } else { + nm = "${prefix}llvm-nm" + otool = "${prefix}llvm-otool" + } + + does_reexport_command = "[ ! -e \"$dylib\" -o ! -e \"$tocname\" ] || $otool -l \"$dylib\" | grep -q LC_REEXPORT_DYLIB" + + link_command = "$linker_driver $ld -shared " + if (is_component_build) { + link_command += " -Wl,-install_name,@rpath/\"{{target_output_name}}{{output_extension}}\" " + } + link_command += dsym_switch + link_command += "{{ldflags}} -o \"$dylib\" -Wl,-filelist,\"$rspfile\" {{frameworks}} {{swiftmodules}} {{solibs}} {{libs}} {{rlibs}}" + + replace_command = "if ! cmp -s \"$temporary_tocname\" \"$tocname\"; then mv \"$temporary_tocname\" \"$tocname\"" + extract_toc_command = "{ $otool -l \"$dylib\" | grep LC_ID_DYLIB -A 5; $nm -gPp \"$dylib\" | cut -f1-2 -d' ' | grep -v U\$\$; true; }" + + command = "if $does_reexport_command ; then $link_command && $extract_toc_command > \"$tocname\"; else $link_command && $extract_toc_command > \"$temporary_tocname\" && $replace_command ; fi; fi" + + rspfile_content = "{{inputs_newline}}" + + description = "SOLINK {{output}}" + + # Use this for {{output_extension}} expansions unless a target manually + # overrides it (in which case {{output_extension}} will be what the target + # specifies). + default_output_dir = "{{root_out_dir}}" + default_output_extension = ".dylib" + + output_prefix = "lib" + + # Since the above commands only updates the .TOC file when it changes, ask + # Ninja to check if the timestamp actually changed to know if downstream + # dependencies should be recompiled. + restat = true + + # Tell GN about the output files. It will link to the dylib but use the + # tocname for dependency management. + outputs = [ + dylib, + tocname, + ] + link_output = dylib + depend_output = tocname + + if (_enable_dsyms) { + outputs += dsym_output + } + if (_save_unstripped_output) { + outputs += [ _unstripped_output ] + } + } + + tool("solink_module") { + # E.g. "./libfoo.so": + sofile = "{{output_dir}}/{{target_output_name}}{{output_extension}}" + rspfile = sofile + ".rsp" + pool = "//build/toolchain:link_pool($default_toolchain)" + + link_command = "$linker_driver $ld -bundle {{ldflags}} -o \"$sofile\" -Wl,-filelist,\"$rspfile\"" + link_command += dsym_switch + link_command += + " {{frameworks}} {{swiftmodules}} {{solibs}} {{libs}} {{rlibs}}" + command = link_command + + rspfile_content = "{{inputs_newline}}" + + description = "SOLINK_MODULE {{output}}" + + # Use this for {{output_extension}} expansions unless a target manually + # overrides it (in which case {{output_extension}} will be what the target + # specifies). + default_output_dir = "{{root_out_dir}}" + default_output_extension = ".so" + + outputs = [ sofile ] + + if (_enable_dsyms) { + outputs += dsym_output + } + if (_save_unstripped_output) { + outputs += [ _unstripped_output ] + } + } + + tool("link") { + outfile = "{{output_dir}}/{{target_output_name}}{{output_extension}}" + rspfile = "$outfile.rsp" + pool = "//build/toolchain:link_pool($default_toolchain)" + + # Note about -filelist: Apple's linker reads the file list file and + # interprets each newline-separated chunk of text as a file name. It + # doesn't do the things one would expect from the shell like unescaping + # or handling quotes. In contrast, when Ninja finds a file name with + # spaces, it single-quotes them in $inputs_newline as it would normally + # do for command-line arguments. Thus any source names with spaces, or + # label names with spaces (which GN bases the output paths on) will be + # corrupted by this process. Don't use spaces for source files or labels. + command = "$linker_driver $ld $dsym_switch {{ldflags}} -o \"$outfile\" -Wl,-filelist,\"$rspfile\" {{frameworks}} {{swiftmodules}} {{solibs}} {{libs}} {{rlibs}}" + description = "LINK $outfile" + rspfile_content = "{{inputs_newline}}" + outputs = [ outfile ] + + if (_enable_dsyms) { + outputs += dsym_output + } + if (_save_unstripped_output) { + outputs += [ _unstripped_output ] + } + + default_output_dir = "{{root_out_dir}}" + } + + # These two are really entirely generic, but have to be repeated in + # each toolchain because GN doesn't allow a template to be used here. + # See //build/toolchain/toolchain.gni for details. + tool("stamp") { + command = stamp_command + description = stamp_description + } + tool("copy") { + command = copy_command + description = copy_description + } + + tool("copy_bundle_data") { + # copy_command use hardlink if possible but this does not work with + # directories. Also when running EG2 tests from Xcode, Xcode tries to + # copy some files into the application bundle which fails if source + # and destination are hardlinked together. + # + # Instead use clonefile to copy the files which is as efficient as + # hardlink but ensure the file have distinct metadata (thus avoid the + # error with ditto, see https://crbug.com/1042182). + if (host_os == "mac") { + command = "rm -rf {{output}} && /bin/cp -Rc {{source}} {{output}}" + } else { + command = "rm -rf {{output}} && /bin/cp -Rl {{source}} {{output}}" + } + description = "COPY_BUNDLE_DATA {{source}} {{output}}" + pool = "//build/toolchain/apple:bundle_pool($default_toolchain)" + } + + # Swift is only used on iOS, not macOS. We want to minimize the number + # of Xcode-based tools used by the macOS toolchain, so we intentionally + # disallow future uses of Swift on macOS. https://crbug.com/965663. + if (toolchain_args.current_os == "ios") { + tool("swift") { + _tool = rebase_path("//build/toolchain/ios/swiftc.py", root_build_dir) + + depfile = "{{target_out_dir}}/{{module_name}}.d" + depsformat = "gcc" + + outputs = [ + # The module needs to be the first output listed. The blank line after + # the module is required to prevent `gn format` from changing the file + # order. + "{{target_gen_dir}}/{{module_name}}.swiftmodule", + + "{{target_gen_dir}}/{{module_name}}.h", + "{{target_gen_dir}}/{{module_name}}.swiftdoc", + "{{target_gen_dir}}/{{module_name}}.swiftsourceinfo", + ] + + if (swift_whole_module_optimization) { + _extra_flags = "-whole-module-optimization" + _objects_dir = "{{target_out_dir}}" + + outputs += [ "$_objects_dir/{{module_name}}.o" ] + } else { + _extra_flags = "" + _objects_dir = "{{target_out_dir}}/{{label_name}}" + + partial_outputs = [ "$_objects_dir/{{source_name_part}}.o" ] + } + + _env_vars = "TOOL_VERSION=${tool_versions.swiftc}" + if (invoker.sdk_developer_dir != "") { + _env_vars += " DEVELOPER_DIR=${toolchain_args.sdk_developer_dir}" + } + + command = + "$_env_vars $python_path $_tool -module-name {{module_name}} " + + "-object-dir $_objects_dir " + + "-module-path {{target_gen_dir}}/{{module_name}}.swiftmodule " + + "-header-path {{target_gen_dir}}/{{module_name}}.h " + + "-depfile {{target_out_dir}}/{{module_name}}.d " + + "-depfile-filter {{target_gen_dir}}/{{module_name}}.swiftmodule " + + "-bridge-header {{bridge_header}} $_extra_flags " + + "{{swiftflags}} {{include_dirs}} {{module_dirs}} {{inputs}}" + } + } + + # xcassets are only used on iOS, not macOS. We want to minimize the number + # of Xcode-based tools used by the macOS toolchain, so we intentionally + # disallow future uses of xcassets on macOS. https://crbug.com/965663. + if (toolchain_args.current_os == "ios") { + tool("compile_xcassets") { + _tool = rebase_path("//build/toolchain/ios/compile_xcassets.py", + root_build_dir) + + _env_vars = "TOOL_VERSION=${tool_versions.compile_xcassets}" + if (invoker.sdk_developer_dir != "") { + _env_vars += " DEVELOPER_DIR=${toolchain_args.sdk_developer_dir}" + } + + command = + "$_env_vars $python_path $_tool -p \"${invoker.sdk_name}\" " + + "-t \"${invoker.deployment_target}\" " + + "-T \"{{bundle_product_type}}\" " + + "-P \"{{bundle_partial_info_plist}}\" " + "-o {{output}} {{inputs}}" + + description = "COMPILE_XCASSETS {{output}}" + pool = "//build/toolchain/apple:bundle_pool($default_toolchain)" + } + } + + tool("action") { + pool = "//build/toolchain:action_pool($default_toolchain)" + } + } +} |