[mod_python] warning: "_POSIX_C_SOURCE" redefined - is this a significant problem?

I haven't heard it cause any problems for anyone so far. This is part of 
Python, so not much can be done about it from mod_python.

Grisha

On Sun, 21 Nov 2004, John Rector wrote:

> Environment:
>
> RedHat Linux Enterprise 3
>
>> gcc -v
> Reading specs from /usr/lib/gcc-lib/i386-redhat-linux/3.2.3/specs
> Configured with: ../configure --prefix=/usr --mandir=/usr/share/man 
> --infodir=/usr/share/info --enable-shared --enable-threads=posix 
> --disable-checking --with-system-zlib --enable-__cxa_atexit 
> --host=i386-redhat-linux
> Thread model: posix
> gcc version 3.2.3 20030502 (Red Hat Linux 3.2.3-42)
>
>
> I build Apache httpd, Python and then mod_python, and I get
>
> warning: "_POSIX_C_SOURCE" redefined
>
> Here's the build scenario with reported errors. Can anyone comment on the 
> significance of this?
>
> # =========== make clean
> rm -rf /tmp/httpd-2.0.52 /tmp/python
>
> # =========== make httpd
> cd ~/src
> rm -rf httpd-2.0.52
> tar zxvf ~/downloads/httpd-2.0.52.tar.gz
> cd httpd-2.0.52
> ./configure --prefix=/tmp/httpd-2.0.52 \
>    --enable-mods-shared=most \
>    --enable-so
>
> make
> sudo make install
>
> # =========== make Python
> cd ~/src
> rm -rf Python-2.3.4
> tar zxvf ~/downloads/Python-2.3.4.tgz
> cd Python-2.3.4
> ./configure --prefix=/tmp/python --enable-shared
> make
> make test
> sudo make install
>
> # ========== update environment
> sudo chown -R auser: /tmp/httpd-2.0.52 /tmp/python
> export LD_LIBRARY_PATH=/tmp/httpd-2.0.52/lib:/tmp/python-2.3.4/ 
> lib:$LD_LIBRARY_PATH
>
> # ========== make mod_python
> cd ~/src
> rm -rf mod_python-3.1.3
> tar zxvf ~/downloads/mod_python-3.1.3.tgz
> cd mod_python-3.1.3
> ./configure --with-apxs=/tmp/httpd-2.0.52/bin/apxs 
> --with-python=/tmp/python/bin/python2.3
> make
>
> make[1]: Entering directory `/data/home/auser/src/mod_python-3.1.3/src'
>
> Compiling for DSO.
>
> /tmp/httpd-2.0.52/bin/apxs -I/home/auser/src/mod_python-3.1.3/src/include 
> -I/tmp/httpd-2.0.52/include -I/tmp/python/include/python2.3 -c mod_python.c 
> _apachemodule.c requestobject.c tableobject.c util.c serverobject.c 
> connobject.c filterobject.c hlist.c hlistobject.c 
> -L/tmp/python/lib/python2.3/config  -Xlinker -export-dynamic      -lm 
> -lpython2.3 -lpthread -ldl -lutil -lm
> /tmp/httpd-2.0.52/build/libtool --silent --mode=compile gcc -prefer-pic 
> -DAP_HAVE_DESIGNATED_INITIALIZER -DLINUX=2 -D_REENTRANT -D_XOPEN_SOURCE=500 
> -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -g -O2 -pthread 
> -I/tmp/httpd-2.0.52/include  -I/tmp/httpd-2.0.52/include 
> -I/tmp/httpd-2.0.52/include  -I/home/auser/src/mod_python-3.1.3/src/include 
> -I/tmp/httpd-2.0.52/include -I/tmp/python/include/python2.3  -c -o 
> mod_python.lo mod_python.c && touch mod_python.slo
> In file included from /tmp/python/include/python2.3/Python.h:8,
>                 from 
> /home/auser/src/mod_python-3.1.3/src/include/mod_python.h:57,
>                 from mod_python.c:28:
> /tmp/python/include/python2.3/pyconfig.h:850:1: warning: "_POSIX_C_SOURCE" 
> redefined
> In file included from /usr/include/sys/types.h:27,
>                 from /tmp/httpd-2.0.52/include/apr.h:112,
>                 from /tmp/httpd-2.0.52/include/ap_config.h:19,
>                 from /tmp/httpd-2.0.52/include/httpd.h:29,
>                 from 
> /home/auser/src/mod_python-3.1.3/src/include/mod_python.h:32,
>                 from mod_python.c:28:
> /usr/include/features.h:131:1: warning: this is the location of the previous 
> definition
> /tmp/httpd-2.0.52/build/libtool --silent --mode=compile gcc -prefer-pic 
> -DAP_HAVE_DESIGNATED_INITIALIZER -DLINUX=2 -D_REENTRANT -D_XOPEN_SOURCE=500 
> -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -g -O2 -pthread 
> -I/tmp/httpd-2.0.52/include  -I/tmp/httpd-2.0.52/include 
> -I/tmp/httpd-2.0.52/include  -I/home/auser/src/mod_python-3.1.3/src/include 
> -I/tmp/httpd-2.0.52/include -I/tmp/python/include/python2.3  -c -o 
> _apachemodule.lo _apachemodule.c && touch _apachemodule.slo
> In file included from /tmp/python/include/python2.3/Python.h:8,
>                 from 
> /home/auser/src/mod_python-3.1.3/src/include/mod_python.h:57,
>                 from _apachemodule.c:25:
> /tmp/python/include/python2.3/pyconfig.h:850:1: warning: "_POSIX_C_SOURCE" 
> redefined
> In file included from /usr/include/sys/types.h:27,
>                 from /tmp/httpd-2.0.52/include/apr.h:112,
>                 from /tmp/httpd-2.0.52/include/ap_config.h:19,
>                 from /tmp/httpd-2.0.52/include/httpd.h:29,
>                 from 
> /home/auser/src/mod_python-3.1.3/src/include/mod_python.h:32,
>                 from _apachemodule.c:25:
> /usr/include/features.h:131:1: warning: this is the location of the previous 
> definition
>