
These are some tests that configure can perform, that look like they might
help somewhat...


 - Macro: AC_C_LONG_DOUBLE
     If the C compiler supports the `long double' type, define
     `HAVE_LONG_DOUBLE'.  Some C compilers that do not define
     `__STDC__' do support the `long double' type; some compilers that
     define `__STDC__' do not support `long double'.

 - Macro: AC_CHECK_SIZEOF (TYPE [, CROSS-SIZE])
     Define `SIZEOF_UCTYPE' to be the size in bytes of the C (or C++)
     builtin type TYPE, e.g. `int' or `char *'.  If `type' is unknown
     to the compiler, it gets a size of 0.  UCTYPE is TYPE, with
     lowercase converted to uppercase, spaces changed to underscores,
     and asterisks changed to `P'.  If cross-compiling, the value
     CROSS-SIZE is used if given, otherwise `configure' exits with an
     error message.

     For example, the call
          AC_CHECK_SIZEOF(int *)

     defines `SIZEOF_INT_P' to be 8 on DEC Alpha AXP systems.

 - Macro: AC_INT_16_BITS
     If the C type `int' is 16 bits wide, define `INT_16_BITS'.  This
     macro is obsolete; it is more general to use
     `AC_CHECK_SIZEOF(int)' instead.

 - Macro: AC_LONG_64_BITS
     If the C type `long int' is 64 bits wide, define `LONG_64_BITS'.
     This macro is obsolete; it is more general to use
     `AC_CHECK_SIZEOF(long)' instead.


Marc G. Fournier                                
Systems Administrator @ hub.org 
primary: scrappy@hub.org           secondary: scrappy@{freebsd|postgresql}.org 


Mon, 16 Feb 1998 21:05:54 -0400 (AST)
The Hermit Hacker <scrappy@hub.org>
Do these help for the Alpha ports...?