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Re: Guile on Mac OS X
From: |
Michael Tuexen |
Subject: |
Re: Guile on Mac OS X |
Date: |
Mon, 5 Aug 2002 09:44:52 +0200 |
Rob,
see my comments below.
Best regards
Michael
On Montag, Aug 5, 2002, at 07:24 Europe/Berlin, Rob Browning wrote:
Michael Tuexen <address@hidden> writes:
### GUILE_FUNC_DECLARED(function, headerfile)
### 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)
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):
[Powerbook:~/guile-1.5.6] tuexen% grep strptime /usr/include/time.h
char *strptime __P((const char *, const char *, struct tm *));
[Powerbook:~/guile-1.5.6] tuexen% grep sleep /usr/include/unistd.h
unsigned int sleep __P((unsigned int));
int usleep __P((unsigned int));
[Powerbook:~/guile-1.5.6] tuexen% grep usleep /usr/include/unistd.h
int usleep __P((unsigned int));
[Powerbook:~/guile-1.5.6] tuexen%
They are in /usr/include/unistd.h.
I have the impression that grep can find it but AC_EGREP_HEADER fails
to find it. I have no idea why. For strptime everything works as
expected.
Unfortunately GUILE_FUNC_DECLARED may not make it easy to test a
second location since it looks like if the function isn't found the
first time, it takes actions that wouldn't be undone by a later
successful test.
One option would be to change GUILE_FUNC_DECLARED to allow multiple
headers like this:
GUILE_FUNC_DECLARED([sleep], [unistd.h time.h])
or can m4, etc. handle ... args?
GUILE_FUNC_DECLARED([sleep], [unistd.h], [time.h])
I'll look in to a solution of some kind unless someone else knows how
to write this up off the top of their head.
Alternately I suppose we could use two functions, one to check a
header and one to call later to take action if none of the checks
succeeded:
GUILE_CHECK_HEADER_FOR_FUNC([sleep], [unistd.h])
GUILE_CHECK_HEADER_FOR_FUNC([sleep], [time.h])
GUILE_CHECK_FOR_MISSING_FUNC_DECLARATION([sleep])
not a big deal to me either way.
We do not need this.
--
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