On Tue, 29 Jun 2010, Wesley Smith wrote:
What's the appropriate way to determine 32 v. 64 bit compilation?
I've looked into using:
AC_CANONICAL_BUILD
with the $build_cpu $build_vendor $build_os variables, but it doesn't
give the right info (in my case i686 pc linux-gnu). I'm essentially
looking for something in autoconf land equivalent to:
It is much more useful and reliable to test the size of the relevant
types. For example, my package includes tests like this in
configure.ac:
# Obtain size of a 'unsigned long' and define as SIZEOF_UNSIGNED_LONG
AC_CHECK_SIZEOF(unsigned long)
# Obtain size of size_t and define as SIZEOF_SIZE_T
AC_CHECK_SIZEOF(size_t)
# Obtain size of an unsigned int pointer and define as SIZEOF_UNSIGNED_INTP
AC_CHECK_SIZEOF(unsigned int*)
Bob
--
Bob Friesenhahn
bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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