Re: Compilation failure: 8.2.4 and 8.1.0 under XPPro/MinGW

Match,

That did the trick. FWIW, my copy of time.h did not have the "#ifndef __MINGW_H" enclosures around that block.

Hopefully this'll find its way into the search engines and save somebody else the trouble.

-phil

-----Original Message-----
From: Match(dot)Grun(at)thomson(dot)com [mailto:Match(dot)Grun(at)thomson(dot)com]
Sent: Tuesday, July 03, 2007 3:45 PM
To: Phil Mills; pgsql-ports(at)postgresql(dot)org
Subject: RE: [PORTS] Compilation failure: 8.2.4 and 8.1.0 under
XPPro/MinGW

Phil,

I found the same problem. It seems that MinGW has a broken header file.
I made the following changes:

In MinGW/include/sys/time.h

--------- Cut here ------------
#ifndef __MINGW_H
/* Provided for compatibility with code that assumes that
the presence of gettimeofday function implies a definition
of struct timezone. */
struct timezone
{
int tz_minuteswest; /* of Greenwich */
int tz_dsttime; /* type of dst correction to apply */
};

/*
Implementation as per:
The Open Group Base Specifications, Issue 6
IEEE Std 1003.1, 2004 Edition

The timezone pointer arg is ignored. Errors are ignored.
*/
int __cdecl gettimeofday(struct timeval *__restrict__,
void *__restrict__ /* tzp (unused) */);
#endif
--------- Cut here ------------

This is not documented anywhere. On the postgres site or the mingw
sites.
Hope that helps.

Match

-----Original Message-----
From: pgsql-ports-owner(at)postgresql(dot)org
[mailto:pgsql-ports-owner(at)postgresql(dot)org] On Behalf Of Phil Mills
Sent: Tuesday, July 03, 2007 3:30 PM
To: pgsql-ports(at)postgresql(dot)org
Subject: [PORTS] Compilation failure: 8.2.4 and 8.1.0 under XPPro/MinGW

I've seen the build error below referenced in several messages, but
haven't seen a clear answer for how to resolve it.

Environment: XP Pro with MSys/MinGW freshly installed according to the
docs here: http://www.postgresql.org/docs/faqs.FAQ_MINGW.html
Zlib is installed; Visual Studio and Cygwin are also on the system but
should be out of the way.

Reason for building: increase NAMEDATALEN so it'll quit truncating my
absurdly-large column names.

Output from Make (substantially the same whether I'm building 8.2.4 or
8.1.0):

pmills(at)ITLPT9060 /c/postgresql-8.2.4
$ make
make -C doc all
make[1]: Entering directory `/c/postgresql-8.2.4/doc'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/c/postgresql-8.2.4/doc'
make -C src all
make[1]: Entering directory `/c/postgresql-8.2.4/src'
make -C port all
make[2]: Entering directory `/c/postgresql-8.2.4/src/port'
gcc -O2 -Wall -Wmissing-prototypes -Wpointer-arith -Winline
-Wdeclaration-after- statement
-Wendif-labels -fno-strict-aliasing -I../../src/port -DFRONTEND -I../.
./src/include -I./src/include/port/win32 -DEXEC_BACKEND
"-I../../src/include/po rt/win32" -c -o
getrusage.o getrusage.c
In file included from ../../src/include/rusagestub.h:17,
from getrusage.c:18:
c:/mingw/bin/../lib/gcc/mingw32/3.4.2/../../../../include/sys/time.h:27:
error: redefinition of `struct timezone'
c:/mingw/bin/../lib/gcc/mingw32/3.4.2/../../../../include/sys/time.h:40:
error: conflicting types for 'gettimeofday'
../../src/include/port.h:292: error: previous declaration of
'gettimeofday' was here
c:/mingw/bin/../lib/gcc/mingw32/3.4.2/../../../../include/sys/time.h:40:
error: conflicting types for 'gettimeofday'
../../src/include/port.h:292: error: previous declaration of
'gettimeofday' was here
make[2]: *** [getrusage.o] Error 1
make[2]: Leaving directory `/c/postgresql-8.2.4/src/port'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/c/postgresql-8.2.4/src'
make: *** [all] Error 2

pmills(at)ITLPT9060 /c/postgresql-8.2.4
$

Could someone please provide either:
* Better instructions for how to install/configure MSys and MinGW or
* Better instructions for how to compile Postgres using MinGW?

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