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Title: configure: refuses setgroups
Type: Stage:
Components: Build Versions: Python 2.4
Status: closed Resolution: out of date
Dependencies: Superseder:
Assigned To: Nosy List: loewis, terry.reedy, zosh
Priority: normal Keywords:

Created on 2005-04-07 12:53 by zosh, last changed 2022-04-11 14:56 by admin. This issue is now closed.

File name Uploaded Description Edit
standards.h zosh, 2005-04-15 08:21
Messages (10)
msg24949 - (view) Author: zosh (zosh) Date: 2005-04-07 12:53
On Irix 6.5 with MIPS cc 7.30 configure refuses to recognize
the existence of "setgroups". 

configure:14453: checking for setgroups
configure:14477: cc -c -g  conftest.c >&5
cc-1020 cc: ERROR File = conftest.c, Line = 159
  The identifier "setgroups" is undefined.

  void* p = setgroups
1 error detected in the compilation of "conftest.c".
configure:14483: $? = 2
configure: failed program was:
| /* confdefs.h.  */
| #include <unistd.h>
| #ifdef HAVE_GRP_H
| #include <grp.h>
| #endif
| int
| main ()
| {
| void* p = setgroups
|   ;
|   return 0;
| }

When I compile a short test program that includes only unistd.h
with cc, it reports no errors.

So I had to manipulate pyconfig.h by hand to force the desired
behaviour. Is this a known issue? Please tell me if I have to
perform other test on my box to solve the issue.
msg24950 - (view) Author: Martin v. Löwis (loewis) * (Python committer) Date: 2005-04-07 22:50
Logged In: YES 

When you say "I compile a short test program that includes
only unistd.h" did you literally mean a program that only
includes unistd.h (i.e. has no main function)? If not, what
is the short program? In particular, make sure it includes
the line

void *p = setgroups;

Please locate the declaration of setgroups in unistd.h (or
whereever it is declared), and report whether this is in a
conditional compilation section, and if so, what precisely
the condition is.
msg24951 - (view) Author: zosh (zosh) Date: 2005-04-08 07:51
Logged In: YES 

My test program that compiled correctly with "cc -c -g":

#include <unistd.h>
int main ()
 void *p = setgroups;
 return 0;

The definition of setgroups in <unistd.h>:
#if defined(_BSD_COMPAT)
extern int setgroups(int, int *);
#else   /* !_BSD_COMPAT */
extern int setgroups(int, const gid_t *);
#endif /* _BSD_COMPAT */
#endif /* _SGIAPI */

So it should catch one of these defines.

msg24952 - (view) Author: Martin v. Löwis (loewis) * (Python committer) Date: 2005-04-09 10:33
Logged In: YES 

Why do you believe that _SGIAPI is defined?

Please try compiling your program with

msg24953 - (view) Author: zosh (zosh) Date: 2005-04-11 12:29
Logged In: YES 

I believe _SIGAPI is defined beacuse cc should report a non-existent
"setgroups" otherwise.

Compiling my test program with -D_POSIX_C_SOURCE=200112L 
resulted in a failure:

cc-1020 cc: ERROR File = t.c, Line = 5
  The identifier "setgroups" is undefined.
   void *p = setgroups;
msg24954 - (view) Author: Martin v. Löwis (loewis) * (Python committer) Date: 2005-04-11 21:21
Logged In: YES 

Hmm. You say "because cc should report a non-existent
setgroups otherwise"; then you bring an error message
'"setgroups" is undefined". Doesn't this imply that _SGIAPI
(not _SIGAPI) is indeed not defined, in the case of Python,
as well as the case of the various -D options?
msg24955 - (view) Author: zosh (zosh) Date: 2005-04-14 15:30
Logged In: YES 

I must assume that according to the snippet of unistd.h I provided in
an earlier comment. Is it possible that setting one -D option clears
another one like _SGIAPI ? Tell me please if you would like me
perform more tests on my system.
msg24956 - (view) Author: Martin v. Löwis (loewis) * (Python committer) Date: 2005-04-14 18:16
Logged In: YES 

Please try to find out whether _SGIAPI is defined anywhere
in /usr/include/* or /usr/include/*/*; most likely, some of
the -D defines suppress the definition of _SGIAPI.

If so, a solution might be to define _SGIAPI in addition to
the other defines; see the definition of _GNU_SOURCE,
_BSD_VISIBLE etc in However, it would be good
to find some definition for _SGIAPI - perhaps we are
supposed to define _SGI_SOURCE, or _SGI_GIMME_EVERYTHING :-)
msg24957 - (view) Author: zosh (zosh) Date: 2005-04-15 08:21
Logged In: YES 

_SGIAPI is defined in /usr/include/standards.h:
#define _SGIAPI         ((defined(_SGI_SOURCE) && \
                        NO_POSIX && _NO_XOPEN4 && _NO_XOPEN5) || \
                        (_ANSIMODE && _NO_POSIX && _NO_XOPEN4 && 

standards.h contains some comments when e. g. _SGI_SOURCE  and
other symbols are defined. Refer to the attached  file.
msg104546 - (view) Author: Terry J. Reedy (terry.reedy) * (Python committer) Date: 2010-04-29 17:51
Closing this pending 2.4 Irix issue as out of date.
Martin, reopen if you object.
Date User Action Args
2022-04-11 14:56:10adminsetgithub: 41824
2010-04-29 17:51:59terry.reedysetstatus: pending -> closed

nosy: + terry.reedy
messages: + msg104546

resolution: out of date
2009-02-16 17:52:04ajaksu2setstatus: open -> pending
2005-04-07 12:53:45zoshcreate