Use response files in the GN build for shared libs and executables

build/toolchain/mac/BUILD.gn

 # 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("../goma.gni")
 
@@ skipping 62 matching lines @@
       depfile = "\$out.d"
       deps = "gcc"
     }
     tool("objcxx") {
       command = "$cxx -MMD -MF \$out.d \$defines \$includes \$cflags \$cflags_cc \$cflags_objcc \$cflags_pch_objcc -c \$in -o \$out"
       description = "OBJCXX \$out"
       depfile = "\$out.d"
       deps = "gcc"
     }
     tool("alink") {
-      command = "rm -f \$out && ./gyp-mac-tool filter-libtool libtool \$libtool_flags -static -o \$out \$in \$postbuilds"
-      description = "LIBTOOL-STATIC \$out, POSTBUILDS"

[Nico, 2014/05/30 16:37:24]

postbuilds usually take most of the time, so omitting them from the description
is a bit misleading

[brettw, 2014/05/30 17:24:39]

We don't do any postbuilds. Anything that's required in a post-build step still
needs to be figured out (hint hint!) and I didn't want to imply here that we
were doing any!

[Nico, 2014/05/30 17:35:38]

That's a good point :-)

+      command = "rm -f \$out && ./gyp-mac-tool filter-libtool libtool \$libtool_flags -static -o \$out @\$rspfile \$postbuilds"
+      description = "LIBTOOL-STATIC \$out"
+      rspfile = "\$out.rsp"

[Nico, 2014/05/30 16:37:24]

Oh, I suppose my comment about spaces is more appropriate here than in the linux
file.

+      rspfile_content = "\$in"
     }
     tool("solink") {
-      command = "if [ ! -e \$lib -o ! -e \${lib}.TOC ] || otool -l \$lib | grep -q LC_REEXPORT_DYLIB ; then $ld -shared \$ldflags -o \$lib \$in \$solibs \$libs \$postbuilds && { otool -l \$lib | grep LC_ID_DYLIB -A 5; nm -gP \$lib | cut -f1-2 -d' ' | grep -v U\$\$; true; } > \${lib}.TOC; else $ld -shared \$ldflags -o \$lib \$in \$solibs \$libs \$postbuilds && { otool -l \$lib | grep LC_ID_DYLIB -A 5; nm -gP \$lib | cut -f1-2 -d' ' | grep -v U\$\$; true; } > \${lib}.tmp && if ! cmp -s \${lib}.tmp \${lib}.TOC; then mv \${lib}.tmp \${lib}.TOC ; fi; fi"
-      description = "SOLINK \$lib, POSTBUILDS"
+      command = "if [ ! -e \$lib -o ! -e \${lib}.TOC ] || otool -l \$lib | grep -q LC_REEXPORT_DYLIB ; then $ld -shared \$ldflags -o \$lib @\$rspfile \$solibs \$libs \$postbuilds && { otool -l \$lib | grep LC_ID_DYLIB -A 5; nm -gP \$lib | cut -f1-2 -d' ' | grep -v U\$\$; true; } > \${lib}.TOC; else $ld -shared \$ldflags -o \$lib \$in \$solibs \$libs \$postbuilds && { otool -l \$lib | grep LC_ID_DYLIB -A 5; nm -gP \$lib | cut -f1-2 -d' ' | grep -v U\$\$; true; } > \${lib}.tmp && if ! cmp -s \${lib}.tmp \${lib}.TOC; then mv \${lib}.tmp \${lib}.TOC ; fi; fi"
+      description = "SOLINK \$lib"
+      rspfile = "\$out.rsp"
+      rspfile_content = "\$in"
       #pool = "link_pool"
       restat = "1"
     }
     tool("link") {
-      command = "$ld \$ldflags -o \$out \$in \$solibs \$libs \$postbuilds"
-      description = "LINK \$out, POSTBUILDS"
+      command = "$ld \$ldflags -o \$out @\$rspfile \$solibs \$libs \$postbuilds"
+      description = "LINK \$out"
+      rspfile = "\$out.rsp"
+      rspfile_content = "\$in"
       #pool = "link_pool"
     }
     #tool("infoplist") {
     #  command = "$cc -E -P -Wno-trigraphs -x c \$defines \$in -o \$out && plutil -convert xml1 \$out \$out"
     #  description = "INFOPLIST \$out"
     #}
     #tool("mac_tool") {
     #  command = "\$env ./gyp-mac-tool \$mactool_cmd \$in \$out"
     #  description = "MACTOOL \$mactool_cmd \$in"
     #}
@@ skipping 19 matching lines @@
 # Toolchain representing the target build (either mac or iOS).
 mac_clang_toolchain("clang") {
   toolchain_os = os
 }
 
 # This toolchain provides a way for iOS target compiles to reference targets
 # compiled for the host system. It just overrides the OS back to "mac".
 mac_clang_toolchain("host_clang") {
   toolchain_os = "mac"
 }