Re: getopt question

[Gary V. Vaughan]

Hi Matt.

On Sun, Nov 19, 2000 at 02:54:54PM -0500, Matthew R. MacIntyre wrote:
> In a package I'm contributing to, we're looking for a way to include GNU
> getopt in the sources if the build system does not have it installed.
> I looked around for a way to do this, and the only thing semi-useful I
> found was the AC_REPLACE_GNU_GETOPT macro.
> 
> Does this actually work?  Whenever I use it in the configure.in I get a
> 
> ./configure: AC_REPLACE_GNU_GETOPT: command not found
> 
> I figure I must either be missing something, or this is broken?

You also need the AC_REPLACE_GNU_GETOPT macro definition...  but I
don't know where you might find that -- at the autoconf macro
repository perhaps?

> If this macro does work, how are the sources setup in the Makefile.am.
> Currently, here's what I have, which I'm pretty sure is wrong:
> 
> EXTRA_DIST = getopt.c getopt.h getopt1.c
> 
> getopt.o: getopt.c
>         $(CC) $(CFLAGS) -c getopt.c
> 
> getopt1.o: getopt1.c
>         $(CC) $(CFLAGS) -c getopt1.c
> 
> 
> Any suggestions would be very greatly appreciated.  This one has been
> frustrating me for some time now.

>From the rather excellent ``GNU Autoconf, Automake and Libtool'' =)O|

$ ls replace/
...
getopt.c
getopt1.c
gnu-getopt.h


configure.in:

AC_CHECK_FUNCS(getopt_long, [],
[LIBOBJS="$LIBOBJS getopt.$ac_objext getopt1.$objext"
rm -f replace/getopt.h
$LN_S ./gnu-getopt.h replace/getopt.h])

...

Xsed="sed -e s/^X//"
LTLIBOBJS=`echo "$LIBOBJS | \
[$Xsed -e "s,\.[^.]* ,.lo ,g;s,\.[^.]*$,.lo,"]
AC_SUBST(LTLIBOBJS)

replace/Makefile.am:

noinst_HEADERS = gnu-getopt.h
noinst_LTLIBRARIES = libreplace.la
libreplace_la_SOURCES =
libreplace_la_LIBADD = @LTLIBOBJS@

But if you want to understand all the hoops this code jumps through,
you will need to reads the book =)O|

Cheers,
        Gary.
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