Re: Cross compiling crda and SSL word size

[Johannes Berg <johannes@sipsolutions.net>]

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On Thu, 2009-07-16 at 21:09 +0200, Johannes Berg wrote:
> On Thu, 2009-07-16 at 15:04 -0400, Jon Smirl wrote:
> > When cross compiling crda the Makefile asks the python system what the
> > word size is. This gets the word size from the host. Is there a way to
> > ask the word size using gcc? In my environment the Makefile is
> > automatically using the correct gcc cross compiler.
> 
> Can you just use gnutls instead? it has no such issue :)
> 
> Otherwise you can probably parse it out of "gcc -dumpspecs", but that
> format doesn't look too nice, especially with multilib gcc...

C99 says this works, I think:

echo -e '#include <limits.h>\n#if ULONG_MAX == 4294967295\n32\n#elif ULONG_MAX == 18446744073709551615U\n64\n#else\n0\n#endif' | gcc -E - | sed 's/^\(#.*\|\)$//;T;d'

johannes

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