Re: Guile on Mac OS X

[Michael Tuexen]

Rob,
see my comments below.
Best regards
Michael

On Montag, Aug 5, 2002, at 17:53 Europe/Berlin, Rob Browning wrote:

> Michael Tuexen <address@hidden> writes:
>
> > > > GUILE_FUNC_DECLARED(strptime, time.h)
> > > > GUILE_FUNC_DECLARED(sleep, unistd.h)
> > > > GUILE_FUNC_DECLARED(usleep, unistd.h)
> > >
> > > Looks like usleep and sleep are in unistd.h on (most?) platforms, but
> > > on yours they're in time.h.
> > No, see the the following output (from an earlier e-mail):
>
> OK.
>
> What happens if you:
>
>   1) create a tiny C file containing
>
>        #include <unistd.h>
>        int main(int argc, char *argv[]) { sleep(1); return 0; }
>
>      and try to compile it with "gcc -Wall myfile.c"?
No warnings. The program is completely valid:
[Powerbook:~] tuexen% gcc -Wall test.c
[Powerbook:~] tuexen%

>   2) Put an AC_EGREP_HEADER([sleep], [unistd.h]) followed by an "exit
>      1" into your configure.in and then re-run autoconf, and then
>      re-run configure?  After the exit, is there anything useful in
>      the log? (may not be).
Well, there is simply no output.
>   3) examine the configure script itself -- find the sleep or usleep
>      test and see what it's doing.  Stick an "exit 1" or some echoes
>      in there somewhere useful (if possible) so you can see what's
>      going on.  I believe if you want to see the output of an echo,
>      you will need to redirect it to fd 5 like this:
>
>        echo "Howdy!" >&5
>
>      This may allow you to see what gcc command it's running, and the
>      contents of the relevant source file.
The code which performs the check is:

### Check for a declaration of FUNCTION in HEADERFILE; if it is
### not there, #define MISSING_FUNCTION_DECL.
AC_DEFUN(GUILE_FUNC_DECLARED, [
  AC_CACHE_CHECK(for $1 declaration, guile_cv_func_$1_declared,
    AC_EGREP_HEADER($1, $2,
                    guile_cv_func_$1_declared=yes,
                    guile_cv_func_$1_declared=no))
  if test [x$guile_cv_func_]$1[_declared] = xno; then
    AC_DEFINE([MISSING_]translit($1, [a-z], [A-Z])[_DECL])
  fi
])

GUILE_FUNC_DECLARED(strptime, time.h)
GUILE_FUNC_DECLARED(sleep, unistd.h)
GUILE_FUNC_DECLARED(usleep, unistd.h)

My problem is that it IS working for strptime but NOT for sleep and
usleep and I do not see the difference.
> --
> Rob Browning
> rlb @defaultvalue.org, @linuxdevel.com, and @debian.org
> Previously @cs.utexas.edu
> GPG=1C58 8B2C FB5E 3F64 EA5C  64AE 78FE E5FE F0CB A0AD
--
address@hidden