[Python-Dev] removing aclocal.m4

["Martin v. Löwis"]

Neal Norwitz wrote:
> Can we remove aclocal.m4?  The last log message states:
> 
>         fix for bug #811160 - autoconf vs. hp/ux system header files.
>         also applied to release23-maint.
> 
>         Note that aclocal.m4 can go away when autoconf 2.58 is out.

It appears to me that 2.59 indeed fixes the HP-UX problem; a diff
with and without aclocal.m4 shows chunks like

  cat confdefs.h >>conftest.$ac_ext
  cat >>conftest.$ac_ext <<_ACEOF
  /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares 
$ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
  /* System header to define __stub macros and hopefully few prototypes,
      which can conflict with char $ac_func (); below.
      Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  Under hpux,
-    including <limits.h> includes <sys/time.h> and causes problems
-    checking for functions defined therein.  */
-#if defined (__STDC__) && !defined (_HPUX_SOURCE)
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
  # include <limits.h>
  #else
  # include <assert.h>
  #endif
+
+#undef $ac_func
+

So they manage to get limits.h define, say, innoucuous_clock(),
instead of clock(), whereas we currently avoid including limits.h
on HP-UX.

IOW, it seems like it should work, but somebody should test it
on HP-UX to be sure.

Regards,
Martin