xampp: Compiling mod_bw.c and getting the error about undefined symbol: apr_atomic_cas

When I was compiling mod_bw.c 0.7 (apxs -i -a -c mod_bw.c) for xampp 1.7.1 on Ubuntu 9.10 and restarting lampp I was getting the following error:httpd: Syntax error on line 129 of /opt/lampp/etc/httpd.conf: Cannot load /opt/lampp/modules/mod_bw.so into server: /opt/lampp/modules/mod_bw.so: undefined symbol: apr_atomic_casThe solution was to edit the mod_bw.c and comment out or remove the following lines:#if (APR_MAJOR_VERSION < 1) #define apr_atomic_inc32 apr_atomic_inc #define apr_atomic_dec32 apr_atomic_dec #define apr_atomic_add32 apr_atomic_add #define apr_atomic_cas32 apr_atomic_cas #define apr_atomic_set32 apr_atomic_set #endifand to recompile the file.

Unfortunately, there was no difference in the file upload speed.