GN: Use $root_out_dir in in copy_compiler_dll rule

The root_build_dir variable yields the root of the build tree. But when the component is being built under a non-default toolchain, its output files are delivered to a toolchain subdirectory instead. The copy_compiler_dll rule should put its output next to where libANGLE and things built using it will go, which is root_out_dir. This fixes cases where the angle GN component is instantiated under more than one toolchain, which heretofore would produce multiple Ninja rules for the same target file $root_build_dir/d3dcompiler_47.dll and thus get complaints from Ninja. BUG=512869 Change-Id: I9fe83c5c5fa74902ef270654d3707636588af6b7 Reviewed-on: https://chromium-review.googlesource.com/320119Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Roland McGrath <mcgrathr@chromium.org>

GN: Use $root_out_dir in in copy_compiler_dll rule
f786c2b9 · Roland McGrath · Jamie Madill · 69bbc98e · f786c2b9
Commit f786c2b9 authored Jan 05, 2016 by Roland McGrath Committed by Jamie Madill Jan 05, 2016
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BUILD.gn BUILD.gn +1 -1

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--- a/BUILD.gn
+++ b/BUILD.gn
@@ -46,7 +46,7 @@ config("internal_config") {
 if (is_win) {
  copy("copy_compiler_dll") {
    sources = [ "$windows_sdk_path/Redist/D3D/$target_cpu/d3dcompiler_47.dll" ]
-    outputs = [ "$root_build_dir/d3dcompiler_47.dll" ]
+    outputs = [ "$root_out_dir/d3dcompiler_47.dll" ]
  }
 }