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155 lines
6.4 KiB
155 lines
6.4 KiB
4 months ago
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# Copyright 2018 The Chromium Authors. All rights reserved.
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# Use of this source code is governed by a BSD-style license that can be
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# found in the LICENSE file.
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toolchain("clang") {
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c_command = "clang"
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cpp_command = "clang++"
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lib_switch = "-l"
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lib_dir_switch = "-L"
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tool("cc") {
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depfile = "{{output}}.d"
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command = "$c_command -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "CC {{output}}"
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outputs =
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[ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
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}
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tool("cxx") {
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depfile = "{{output}}.d"
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command = "$cpp_command -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "CXX {{output}}"
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outputs =
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[ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
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}
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tool("asm") {
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depfile = "{{output}}.d"
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command = "$c_command -MMD -MF $depfile {{defines}} {{include_dirs}} {{asmflags}} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "ASM {{output}}"
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outputs =
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[ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
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}
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tool("objc") {
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depfile = "{{output}}.d"
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precompiled_header_type = "gcc"
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command = "$c_command -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_objc}} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "OBJC {{output}}"
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outputs =
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[ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
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}
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tool("objcxx") {
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depfile = "{{output}}.d"
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precompiled_header_type = "gcc"
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command = "$cpp_command -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_objcc}} -c {{source}} -o {{output}}"
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depsformat = "gcc"
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description = "OBJCXX {{output}}"
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outputs =
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[ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
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}
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tool("alink") {
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# Note about -filelist: Apple's linker reads the file list file and
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# interprets each newline-separated chunk of text as a file name. It
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# doesn't do the things one would expect from the shell like unescaping
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# or handling quotes. In contrast, when Ninja finds a file name with
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# spaces, it single-quotes them in $inputs_newline as it would normally
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# do for command-line arguments. Thus any source names with spaces, or
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# label names with spaces (which GN bases the output paths on) will be
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# corrupted by this process. Don't use spaces for source files or labels.
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rspfile = "{{output}}.rsp"
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rspfile_content = "{{inputs_newline}}"
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command = "rm -f {{output}} && libtool -static {{arflags}} -o {{output}} -filelist $rspfile"
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description = "LIBTOOL-STATIC {{output}}"
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outputs = [ "{{output_dir}}/{{target_output_name}}{{output_extension}}" ]
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default_output_dir = "{{target_out_dir}}"
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default_output_extension = ".a"
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output_prefix = "lib"
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}
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tool("solink") {
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soname = "{{target_output_name}}{{output_extension}}"
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dylib = "{{output_dir}}/$soname" # e.g. "libfoo.dylib"
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rspfile = soname + ".rsp"
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# These variables are not built into GN but are helpers that implement
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# (1) linking to produce a .dylib, (2) extracting the symbols from that
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# file to a temporary file, (3) if the temporary file has differences from
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# the existing .TOC file, overwrite it, otherwise, don't change it.
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#
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# As a special case, if the library reexports symbols from other dynamic
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# libraries, we always update the .TOC and skip the temporary file and
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# diffing steps, since that library always needs to be re-linked.
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tocname = dylib + ".TOC"
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temporary_tocname = dylib + ".tmp"
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does_reexport_command = "[ ! -e \"$dylib\" -o ! -e \"$tocname\" ] || otool -l \"$dylib\" | grep -q LC_REEXPORT_DYLIB"
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link_command = "$cpp_command -shared -Wl,-install_name,@rpath/\"$soname\" {{ldflags}} -o \"$dylib\" -Wl,-filelist,\"$rspfile\" {{libs}} {{solibs}} {{frameworks}}"
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replace_command = "if ! cmp -s \"$temporary_tocname\" \"$tocname\"; then mv \"$temporary_tocname\" \"$tocname\""
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extract_toc_command = "{ otool -l \"$dylib\" | grep LC_ID_DYLIB -A 5; nm -gP \"$dylib\" | cut -f1-2 -d' ' | grep -v U\$\$; true; }"
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command = "if $does_reexport_command ; then $link_command && $extract_toc_command > \"$tocname\"; else $link_command && $extract_toc_command > \"$temporary_tocname\" && $replace_command; fi; fi"
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# See comment in tool("alink") about content of the rspfile.
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rspfile_content = "{{inputs_newline}}"
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description = "DYLIB {{output}}"
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# Use this for {{output_extension}} expansions unless a target manually
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# overrides it (in which case {{output_extension}} will be what the target
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# specifies).
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default_output_extension = ".dylib"
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# Use this for {{output_dir}} expansions unless a target manually overrides
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# it (in which case {{output_dir}} will be what the target specifies).
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default_output_dir = "{{root_out_dir}}"
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# Link to the dylib but have GN use the tocname for dependency management.
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# Tell GN about the output files. It will link to the dylib but use the
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# tocname for dependency management.
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outputs = [
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dylib,
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tocname,
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]
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link_output = dylib
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depend_output = tocname
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output_prefix = "lib"
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# Since the above commands only updates the .TOC file when it changes, ask
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# Ninja to check if the timestamp actually changed to know if downstream
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# dependencies should be recompiled.
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restat = true
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}
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tool("link") {
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outfile = "{{output_dir}}/{{target_output_name}}{{output_extension}}"
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rspfile = "$outfile.rsp"
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# These extra ldflags allow an executable to search for shared libraries in
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# the current working directory.
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additional_executable_ldflags = "-Wl,-rpath,@loader_path/."
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command = "$cpp_command {{ldflags}} $additional_executable_ldflags -o \"$outfile\" -Wl,-filelist,\"$rspfile\" {{solibs}} {{libs}} {{frameworks}}"
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description = "LINK $outfile"
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default_output_dir = "{{root_out_dir}}"
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rspfile_content = "{{inputs_newline}}"
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outputs = [ outfile ]
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}
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tool("stamp") {
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command = "touch {{output}}"
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description = "STAMP {{output}}"
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}
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tool("copy") {
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command = "ln -f {{source}} {{output}} 2>/dev/null || (rm -rf {{output}} && cp -af {{source}} {{output}})"
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description = "COPY {{source}} {{output}}"
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}
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}
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