Thanks to Graham and Jeff Trawick
Below are the two solution that I have tested and both work fine.
Apache starts fine now and is able to load mod_wsgi.
There is still a problem in start of Django app but I will chase it as
a separate thread.
Solution 1 (Thanks to Graham Dumpleton)
===============================
Don't change anything in Apache Code.
Go into mod_wsgi.c source code and change:
/*
* Cleanup the Apache scoreboard to ensure that any
* shared memory segments or memory mapped files not
* available to code in daemon processes.
*/
ap_cleanup_scoreboard(0);
to
#if 0
/*
* Cleanup the Apache scoreboard to ensure that any
* shared memory segments or memory mapped files not
* available to code in daemon processes.
*/
ap_cleanup_scoreboard(0);
#endif
and then look for:
#if !defined(AP_ACCEPT_MUTEX_TYPE)
sconfig->lock_mechanism = ap_accept_lock_mech;
#else
sconfig->lock_mechanism = APR_LOCK_DEFAULT;
#endif
and change it to:
#define AP_ACCEPT_MUTEX_TYPE 1
#if !defined(AP_ACCEPT_MUTEX_TYPE)
sconfig->lock_mechanism = ap_accept_lock_mech;
#else
sconfig->lock_mechanism = APR_LOCK_DEFAULT;
#endif
Then build mod_wsgi
Solution 2 (Thanks to Jeff Trawick from Apache)
===================================
Extract the Source tar ball in a directory.....cd into that directory
Locate the file include/mpm_common.h
Change
extern apr_lockmech_e ap_accept_lock_mech;
to
AP_DECLARE_DATA extern apr_lockmech_e ap_accept_lock_mech;
Locate the file include/scoreboard.h
Change
apr_status_t ap_cleanup_scoreboard(void *d);
to
AP_DECLARE(apr_status_t) ap_cleanup_scoreboard(void *d);
And then issue the following commands
./configure
make
After this step, there will be a httpd.exp file create in the server
directory and a httpd file created in the present directory
remove httpd
edit server/httpd.exp and add one line for ap_accept_lock_mech
make
make install (as root)
Then build mod_wsgi 3.3 from Source Tarball
Regards,
Anurag
On Nov 20, 9:18 am, Graham Dumpleton <[email protected]>
wrote:
> On Saturday, November 20, 2010, Anurag Chourasia
>
> <[email protected]> wrote:
> > Hi Graham,
> > The page
> > at http://httpd.apache.org/docs/current/programs/apxs.html indicates that
>
> > When using such pre-compiled objects make sure they are compiled for
> > position independent code (PIC) to be able to use them for a dynamically
> > loaded shared object. For instance with GCC you always just have to
> > use -fpic.
>
> If -fpic is required for AIX, which may not be the case as various
> platforms default to generating pic code anyway, then it is up tp
> Apache to ensure that that option is provided by apxs. Setting that
> option is not the job of mod_wsgi makefile.
>
> That said, you can add it in if you want, but don't think it will make
> a difference.
>
> Add the option '-Wc,-fpic' to CFLAGS in the makefile.
>
> > I also noticed that the mod_wsgi.a file get deleted after this process. Is
> > there a way to statically link mod_wsgi into apache?
>
> No, configure/makefile for mod_wsgi only supports dynamically linked
> Apache module.
>
> Graham
>
>
>
>
>
>
>
> > Please guide.
>
> > Regards,
>
> > Anurag
> > On Sat, Nov 20, 2010 at 1:35 AM, Graham Dumpleton
> > <[email protected]> wrote:
>
> > So it is cross referenced here, the ServerFault link for this issue is at:
>
> > http://serverfault.com/questions/204047/aix-missing-symbols-ap-cleanu...
>
> > I still don't really have anything to suggest.
>
> > Seems to be a AIX dynamic symbol linking issue and since I don't
> > really know anything about specifics of AIX, just got no idea where to
> > go.
>
> > Graham
>
> > On Friday, November 19, 2010, Guddu <[email protected]> wrote:
> >> Dear modwsgi Team,
>
> >> I hope you could help me with a mod_wsgi load error upon startup of
> >> apache. This is affecting one of our site Go Live and I would
> >> appreciate any help
>
> >> offered in this regard. I am willing to try out code changes on my
> >> machine and rebuilding and retesting if someone could send me the
> >> changes source files.
>
> >> The error upon startup of Apache is as follows
>
> >> root [zibal]% ./usr/local/apache2/bin/apachectl restart
> >> httpd: Syntax error on line 53 of /usr/local/apache2/conf/httpd.conf:
> >> Cannot load /usr/local/apache2/modules/mod_wsgi.so into server: rtld:
> >> 0712-001 Symbol
>
> >> ap_cleanup_scoreboard was referenced\n from module /usr/local/
> >> apache2/modules/mod_wsgi.so(), but a runtime definition\n of the
> >> symbol was not
>
> >> found.\nrtld: 0712-001 Symbol ap_accept_lock_mech was referenced
> >> \n from module /usr/local/apache2/modules/mod_wsgi.so(), but a
> >> runtime definition\n
>
> >> of the symbol was not found.
>
> >> I built Apaxhe 2.2.17 and Mod_Wsgi 3.3 using the source and the
> >> compiler was gcc-4.2.
>
> >> Here are the AIX Server Details
>
> >> Here is the Apache Build Information
> >> =====================================
>
> >> root [zibal]% ./usr/local/apache2/bin/httpd -V
> >> Server version: Apache/2.2.17 (Unix)
> >> Server built: Nov 18 2010 05:04:25
> >> Server's Module Magic Number: 20051115:25
> >> Server loaded: APR 1.4.2, APR-Util 1.3.10
> >> Compiled using: APR 1.4.2, APR-Util 1.3.10
> >> Architecture: 32-bit
> >> Server MPM: Prefork
> >> threaded: no
> >> forked: yes (variable process count)
> >> Server compiled with....
> >> -D APACHE_MPM_DIR="server/mpm/prefork"
> >> -D APR_HAS_SENDFILE
> >> -D APR_HAS_MMAP
> >> -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
> >> -D APR_USE_SYSVSEM_SERIALIZE
> >> -D APR_USE_PTHREAD_SERIALIZE
> >> -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
> >> -D APR_HAS_OTHER_CHILD
> >> -D AP_HAVE_RELIABLE_PIPED_LOGS
> >> -D DYNAMIC_MODULE_LIMIT=128
> >> -D HTTPD_ROOT="/usr/local/apache2"
> >> -D SUEXEC_BIN="/usr/local/apache2/bin/suexec"
> >> -D DEFAULT_PIDLOG="logs/httpd.pid"
> >> -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
> >> -D DEFAULT_LOCKFILE="logs/accept.lock"
> >> -D DEFAULT_ERRORLOG="logs/error_log"
> >> -D AP_TYPES_CONFIG_FILE="conf/mime.types"
> >> -D SERVER_CONFIG_FILE="conf/httpd.conf"
>
> >> Contents of config.nice file are as follows
>
> >> ++++++++++++++++++++++++
> >> #! /bin/sh
> >> #
> >> # Created by configure
>
> >> CC="gcc"; export CC
> >> "./configure" \
> >> "CC=gcc" \
> >> "$@"
> >> ++++++++++++++++++++++++
>
> >> Information about Apache Modules Loaded
> >> =======================================
>
> >> root [zibal]% ./usr/local/apache2/bin/httpd -l
> >> Compiled in modules:
> >> core.c
> >> mod_authn_file.c
> >> mod_authn_default.c
> >> mod_authz_host.c
> >> mod_authz_groupfile.c
> >> mod_authz_user.c
> >> mod_authz_default.c
> >> mod_auth_basic.c
> >> mod_include.c
> >> mod_filter.c
> >> mod_log_config.c
> >> mod_env.c
> >> mod_setenvif.c
> >> mod_version.c
> >> prefork.c
> >> http_core.c
> >> mod_mime.c
> >> mod_status.c
> >> mod_autoindex.c
> >> mod_asis.c
> >> mod_cgi.c
> >> mod_negotiation.c
> >> mod_dir.c
> >> mod_actions.c
> >> mod_userdir.c
> >> mod_alias.c
> >> mod_so.c
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "modwsgi" group.
> > To post to this group, send email to [email protected].
> > To unsubscribe from this group, send email to
> > [email protected].
> > For more options, visit this group
> > athttp://groups.google.com/group/modwsgi?hl=en.
--
You received this message because you are subscribed to the Google Groups
"modwsgi" group.
To post to this group, send email to [email protected].
To unsubscribe from this group, send email to
[email protected].
For more options, visit this group at
http://groups.google.com/group/modwsgi?hl=en.
