Messages in this thread | | | Date | Wed, 11 Apr 2012 18:45:38 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH 0/5] RFC: strip 15,000 lines from a typical autoconf.h |
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On Wed, 11 Apr 2012 18:19:58 -0700 Linus Torvalds <torvalds@linux-foundation.org> wrote:
> #define IS_DEFINED(x) (__stringify(CONFIG_##x)[0]=='1') > > That really is a piece of art. I'm expecting that the Guggenheim will > contact me any moment now about it.
Several weeks ago I asked the assemblage if anyone could think of a way of doing this. It seems that I failed to Cc sufficiently perverted parties.
> Of course, the above does *not* work for a pre-processor, but hey, you > can't have everything. It literally is *only* valid in C code. You > can't have everything.
So we shouldn't call it IS_DEFINED() - that would cause confusion with the old version.
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