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From: Daniel Jacobowitz <dan@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: AC_FUNC_GETPGRP macro is broken
X-Reportbug-Version: 0.37
X-Mailer: reportbug 0.37
Date: Sat, 23 Oct 1999 15:15:35 -0400
Message-Id: <E11f6db-0002dM-00@drow.res.cmu.edu>

Package: autoconf
Version: 2.13-12
Severity: normal


In the test for whether getpgrp() takes an argument, we have the following
code:

#include <stdio.h>
#include <sys/types.h>

int     pid;
int     pg1, pg2, pg3, pg4;
int     ng, np, s, child;

main()
{
        pid = getpid();
        pg1 = getpgrp(0);
        pg2 = getpgrp();
        pg3 = getpgrp(pid);
        pg4 = getpgrp(1);

<snip>



Now, naturally, getpid() and getpgrp() are undeclared.  If the tests are
being run with a C++ compiler, as is the case in 'maildrop's configuration
(AC_LANG_CPLUSPLUS), that's not a warning, it's an error.  Adding the
following to the top of the test fixes it:



#ifdef __cplusplus
extern "C" {
#endif

char getpid();
char getpgrp();

#ifdef __cplusplus
}
#endif



-- System Information
Debian Release: potato
Architecture: powerpc
Kernel: Linux drow.res.cmu.edu 2.3.18 #19 Sat Sep 11 18:16:48 EDT 1999 ppc

Versions of packages autoconf depends on:
ii  debianutils                   1.10       Miscellaneous utilities specific t
ii  m4                            1.4-10     a macro processing language       
ii  perl-5.004 [perl5]            5.004.05-1 Larry Wall's Practical Extracting 
ii  perl-5.005 [perl5]            5.005.03-4 Larry Wall's Practical Extracting