[libdispatch-dev] autoconf HAVE macro conventions

Paolo Bonzini bonzini at gnu.org
Fri Oct 30 15:27:18 PDT 2009

>> Are there any other cases?
> What about the SIZEOF_LONG test? Does autoconf do the right thing for
> '-arch i386 -arch x86_64'?

No, those don't work (they just cannot).  You can always replace them 
with things such as

AH_VERBATIM([#if defined __SIZEOF_LONG__
#elif defined __LP64__
#define SIZEOF_LONG 8
#define SIZEOF_LONG 4

Hum, should make an Autoconf patch to use __SIZEOF_xyz__ defines. :-)

 > Also, what version of autoconf is required to
> get the support for AC_C_BIGENDIAN and universal binaries?

2.62, but it was buggy until 2.63 (2008-09-09).


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