Augustin Cavalier 6570684235 configure: Further fixes to Clang support.
* Actually locate the clang executable, and allow user overrides
 * Properly preserve arguments in get_build_tool_path
 * Fix get_build_tool_path for commands with dashes (e.g. "clang-5.0")
2017-12-01 14:23:57 -05:00
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