On Tue, 29 Jun 2010, Russ Allbery wrote:
I suspect that you're dealing with "all the world is Linux" code, and
therefore doing something like:
AC_CHECK_SIZEOF([long])
AS_IF([test "$ac_cv_sizeof_long" -eq 8],
[AC_DEFINE([OSBIT], 64, [Define to the size of a long in bits.])],
[AC_DEFINE([OSBIT], 32, [Define to the size of a long in bits.])])
would do what you want, but you won't find something exactly like that
built into Autoconf since it's not generally a meaningful thing to do on a
broader variety of platforms.
More specifically, this test would not be very useful for Microsoft
Windows where the 'long' type is 32-bit in a 64-bit application.
There are also OSs which support various optional application models
with various sizes for 'long' and pointers.
Bob
--
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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