On Mon, Jul 09, 2007 at 10:54:12PM +0100, Joe Orton wrote: > On Mon, Jul 09, 2007 at 06:25:27PM -0300, Davi Arnaut wrote: > > +AC_DEFUN([APR_CHECK_TYPES_COMPATIBLE], [ > > +AC_MSG_CHECKING(whether $1 and $2 are the same) > > +AC_TRY_COMPILE(AC_INCLUDES_DEFAULT, [ > > + __builtin_types_compatible_p($1, $2); > > +], [apr_types_compile=yes], [apr_types_compile=no]) > > +AC_RUN_IFELSE([AC_LANG_SOURCE([AC_INCLUDES_DEFAULT > > This should really cache properly; compiling as well as running is > redundant too; something like this should do it:
Or just compile and use one of those neat tricks I can never remember to arrange for a compiler error in one of the cases... int foo[0 - __builtin_thing()]; ?
