Why is the -undef option removed from cpp.

Zack Weinberg zack@wolery.cumb.org
Thu Jun 29 14:27:00 GMT 2000

On Thu, Jun 29, 2000 at 01:52:29PM -0700, H . J . Lu wrote:
> The -undef option:
> 	-undef Do not predefine any nonstandard macros.
> is removed from cpp in gcc 2.96. But XFree86 4.0 uses
> #define RawCppCmd CppCmd -undef
> As the result, many files generated by RawCppCmd are empty. Why is
> it removed?

It is not removed.  Your installation is broken; you have CppCmd
pointing at an internal executable instead of the preprocessor.


More information about the Gcc-bugs mailing list