Re: AC_PROG_CC now required?

[Harlan Stenn]

Ah!  This is the problem.  It looks for CPP, which defaults to /lib/cpp;
however cpp is in /usr/bin/cpp on my system, and that path is not located.

If we search for CC, the CPP test works.

Now I'm insanely tired and am really going to fall asleep before it gets any
brighter outside.
H
--
> >>>>> "Harlan" == Harlan Stenn <address@hidden> writes:
> 
> Harlan> Found it (mostly).  The following configure.in will fail:
> 
> Harlan>  AC_INIT(sidai, 1.0, address@hidden)
> Harlan> AM_INIT_AUTOMAKE(sidai, 1.0)
> 
> Harlan>  AC_PROG_MAKE_SET
> 
> Harlan>  AC_CANONICAL_BUILD
> 
> Harlan>  AC_PATH_X
> 
> Harlan>  AC_OUTPUT
> 
> Harlan> It works fine without the AC_PATH_X.
> 
> Well, AC_PATH_X calls _AC_PATH_X_DIRECT which 
> 
> > if test "$ac_x_libraries" = no; then
> >   # Check for the libraries.
> >   # See if we find them without any special options.
> >   # Don't add to $LIBS permanently.
> >   ac_save_LIBS=$LIBS
> >   LIBS="-lXt $LIBS"
> >   AC_TRY_LINK(address@hidden:@include <X11/Intrinsic.h>], [XtMalloc (0)],
> > [LIBS=$ac_save_LIBS
> > # We can link X programs with no special library path.
> > ac_x_libraries=],
> > [LIBS=$ac_save_LIBS
> > for ac_dir in `echo "$ac_x_includes $ac_x_header_dirs" | sed s/include/lib/
> g`
> > do
> >   # Don't even attempt the hair of trying to link an X program!
> >   for ac_extension in a so sl; do
> >     if test -r $ac_dir/libXt.$ac_extension; then
> >       ac_x_libraries=$ac_dir
> >       break 2
> >     fi
> >   done
> > done])
> > fi # $ac_x_libraries = no
> 
> which does involve an AC_TRY_LINK.  So I'd call this a 2.13 bug, or a
> mis-design of AC_PATH_X, but in any case I prefer 2.50's behavior.
> 
> /tmp % cat configure.in                                          nostromo 11:
> 53
> AC_INIT
> AC_PATH_X
> AC_OUTPUT
> /tmp % autoconf --version                                        nostromo 11:
> 54
> Autoconf version 2.13
> /tmp % autoconf                                                  nostromo 11:
> 54
> 
> /tmp % fgrep '$ac_link' configure                                nostromo 11:
> 54
> if { (eval echo configure:755: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } &&
>  test -s conftest${ac_exeext}; then
> 
> So it does link somewhere
> 
> /tmp % ./configure                                               nostromo 11:
> 55
> creating cache ./config.cache
> checking how to run the C preprocessor... cc -E
> checking for X... libraries /usr/X11R6/lib, headers /usr/X11R6/include
> updating cache ./config.cache
> creating ./config.status
> 
> 
> but does not look for a compiler.