On Tue, Apr 03, 2012 at 09:17:41AM -0700, Joel Eidsath wrote: > I would love some help on this one. I have included my ldd info, as > well as my configure lines for apr, apr-util, httpd, and subversion. > Let me know if you have a guess about what is going wrong. > > Also, please include me on replies as I am not a member of the list. > > Joel Eidsath > jeids...@gmail.com > > I am getting the following error when trying to start apache after > building mod_dav_svn.so: > > ~/httpd/bin/apachectl restart -- > > httpd: Syntax error on line 54 of > /ngs/app/istsvnd/httpd-2.2.21/conf/httpd.conf: Cannot load /ngs/ap > p/istsvnd/httpd/modules/mod_dav_svn.so into server: > /ngs/app/istsvnd/subversion-1.7.4/lib/libsvn_sub > r-1.so.0: undefined symbol: apr_atomic_xchgptr > > Everything looks good on mod_dav_svn.so with ldd (notice libaprutil > and libapr lines, also notice the versions):
The ldd output does indeed look correct. But it looks as if dlopen() regardless fails to locate the correct APR libraries when trying to load mod_dav_svn.so into the running httpd process. It probably finds another APR in /usr/lib or elsewhere and uses that. Try setting LD_LIBRARY_PATH in httpd's environment like so: LD_LIBRARY_PATH=/ngs/app/istsvnd/apr-1.4.6/lib:/ngs/app/istsvnd/apr-util-1.4.1/lib