gn format //build

build/toolchain/gcc_toolchain.gni

 # 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.
 
 # This value will be inherited in the toolchain below.
 concurrent_links = exec_script("get_concurrent_links.py", [], "value")
 
 # This template defines a toolchain for something that works like gcc
 # (including clang).
 #
@@ skipping 66 matching lines @@
     } else {
       solink_libs_section_postfix = ""
     }
 
     # These library switches can apply to all tools below.
     lib_switch = "-l"
     lib_dir_switch = "-L"
 
     tool("cc") {
       depfile = "{{output}}.d"
-      command = "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
+      command =
+          "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "CC {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("cxx") {
       depfile = "{{output}}.d"
-      command = "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
+      command =
+          "$cxx -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_cc}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "CXX {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{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 $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
+      command =
+          "$cc -MMD -MF $depfile {{defines}} {{include_dirs}} {{cflags}} {{cflags_c}} -c {{source}} -o {{output}}"
       depsformat = "gcc"
       description = "ASM {{output}}"
-      outputs = [
-        "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o",
-      ]
+      outputs =
+          [ "{{source_out_dir}}/{{target_output_name}}.{{source_name_part}}.o" ]
     }
 
     tool("alink") {
       rspfile = "{{output}}.rsp"
       command = "rm -f {{output}} && $ar rcs {{output}} @$rspfile"
       description = "AR {{output}}"
       rspfile_content = "{{inputs}}"
-      outputs = [
-        "{{target_out_dir}}/{{target_output_name}}{{output_extension}}"
-      ]
+      outputs =
+          [ "{{target_out_dir}}/{{target_output_name}}{{output_extension}}" ]
       default_output_extension = ".a"
       output_prefix = "lib"
     }
 
     tool("solink") {
       soname = "{{target_output_name}}{{output_extension}}"  # e.g. "libfoo.so".
       sofile = "{{root_out_dir}}/$soname"  # Possibly including toolchain dir.
       rspfile = sofile + ".rsp"
 
       # These variables are not built into GN but are helpers that implement
       # (1) linking to produce a .so, (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.
       tocfile = sofile + ".TOC"
       temporary_tocname = sofile + ".tmp"
-      link_command = "$ld -shared {{ldflags}} -o $sofile -Wl,-soname=$soname @$rspfile"
-      toc_command = "{ readelf -d $sofile | grep SONAME ; nm -gD -f p $soname | cut -f1-2 -d' '; } > $temporary_tocname"
-      replace_command = "if ! cmp -s $temporary_tocname $tocfile; then mv $temporary_tocname $tocfile; fi"
+      link_command =
+          "$ld -shared {{ldflags}} -o $sofile -Wl,-soname=$soname @$rspfile"
+      toc_command =
+          "{ readelf -d $sofile | grep SONAME ; nm -gD -f p $soname | cut -f1-2 -d' '; } > $temporary_tocname"
+      replace_command =
+          "if ! cmp -s $temporary_tocname $tocfile; then mv $temporary_tocname $tocfile; fi"
 
       command = "$link_command && $toc_command && $replace_command"
       if (defined(invoker.postsolink)) {
         command += " && " + invoker.postsolink
       }
-      rspfile_content = "-Wl,--whole-archive {{inputs}} {{solibs}} -Wl,--no-whole-archive $solink_libs_section_prefix {{libs}} $solink_libs_section_postfix"
+      rspfile_content =
+          "-Wl,--whole-archive {{inputs}} {{solibs}} -Wl,--no-whole-archive $solink_libs_section_prefix {{libs}} $solink_libs_section_postfix"
 
       description = "SOLINK $sofile"
 
       # 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_extension = ".so"
 
       output_prefix = "lib"
 
@@ skipping 11 matching lines @@
       if (defined(invoker.solink_outputs)) {
         outputs += invoker.solink_outputs
       }
       link_output = sofile
       depend_output = tocfile
     }
 
     tool("link") {
       outfile = "{{root_out_dir}}/{{target_output_name}}{{output_extension}}"
       rspfile = "$outfile.rsp"
-      command = "$ld {{ldflags}} -o $outfile -Wl,--start-group @$rspfile {{solibs}} -Wl,--end-group $libs_section_prefix {{libs}} $libs_section_postfix"
+      command =
+          "$ld {{ldflags}} -o $outfile -Wl,--start-group @$rspfile {{solibs}} -Wl,--end-group $libs_section_prefix {{libs}} $libs_section_postfix"
       if (defined(invoker.postlink)) {
         command += " && " + invoker.postlink
       }
       description = "LINK $outfile"
       rspfile_content = "{{inputs}}"
       outputs = [ outfile ]
       if (defined(invoker.link_outputs)) {
         outputs += invoker.link_outputs
       }
     }
 
     tool("stamp") {
       command = "touch {{output}}"
       description = "STAMP {{output}}"
     }
 
     tool("copy") {
-      command = "ln -f {{source}} {{output}} 2>/dev/null || (rm -rf {{output}} && cp -af {{source}} {{output}})"
+      command =
+          "ln -f {{source}} {{output}} 2>/dev/null || (rm -rf {{output}} && cp -af {{source}} {{output}})"
       description = "COPY {{source}} {{output}}"
     }
 
     # 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.
     toolchain_args() {
       cpu_arch = invoker.toolchain_cpu_arch
       os = invoker.toolchain_os
       if (defined(invoker.is_clang)) {
         is_clang = invoker.is_clang
       }
     }
 
     if (defined(invoker.deps)) {
       deps = invoker.deps
     }
   }
 }