commit 2e0295c8acfdccfa2041268c4cb6968ce34e6071
author brettw <brettw@chromium.org> Thu Sep 17 15:26:44 2015 -0700
committer Commit bot <commit-bot@chromium.org> Thu Sep 17 22:27:44 2015 +0000
tree 164cd5eb5e1f1b574aa7205ad7d19240c3011bf0
parent d8d3e3ccc5442b824a2876dc873b0aedfb37c41e

Improve GN duplicate name error.

Improve messaging when two targets generate the same output.

Previous message:
  ERROR Duplicate rules for libfoo.so.TOC

New message:
  ERROR at //BUILD.gn:24:1: Duplicate output file.
  shared_library("b456") {
  ^-----------------------
  Two or more targets generate the same output:
    libfoo.so.TOC
  This is normally the result of either overriding the output name or
  having two shared libraries or executables in different directories
  with the same name (since all such targets will be written to the root
  output directory).

  Collisions:
    //:b456
    //:a123

  See //BUILD.gn:21:1: Collision.
  shared_library("a123") {
  ^-----------------------

Review URL: https://codereview.chromium.org/1350173002

Cr-Original-Commit-Position: refs/heads/master@{#349521}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: bfd2deab3b5c8dea29671662116081a3878687a4