Be more explicit about SPIRV_WERROR option. (#2141)

There was some confusion about the SPIRV_WERROR option when it is turned
off.  When the option is off nothing is done.  That is, we do not add
-Wno-error.  This means that if the parent project added -Werorr to the
C flags or CXX flags, then warnings will still be treated as errors.

I've updated the README.md to make this explicit.

Fixes #2121.
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Steven Perron 2018-12-06 11:31:47 -05:00 committed by GitHub
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@ -273,7 +273,7 @@ The following CMake options are supported:
See [`CMakeLists.txt`](CMakeLists.txt) for details.
* `SPIRV_WERROR={ON|OFF}`, default `ON` - Forces a compilation error on any
warnings encountered by enabling the compiler-specific compiler front-end
option.
option. No compiler front-end options are enabled when this option is OFF.
Additionally, you can pass additional C preprocessor definitions to SPIRV-Tools
via setting `SPIRV_TOOLS_EXTRA_DEFINITIONS`. For example, by setting it to