I am trying to run Apache with SSL for my website. But when I start the Apache it throws the error saying:
httpd: Syntax error on line 127 of /usr/local/custom/apache/conf/httpd.conf:
Cannot load modules/mod_ssl.so into server: /usr/local/custom/apache/modules/mod_ssl.so:
undefined symbol: apr_global_mutex_lockfile
Answer
I also encountered the same issue. The root cause of the issue is a version mismatch in the apr version
In order to fix it, download the following: apr-util-1.5.4.tar.gz and apr-1.5.1.tar.gz. These can be downloaded at : https://apr.apache.org/download.cgi
Assuming that you have http src untarred in /src/httpd, you untar the apr-1.5.1 and apr-util in the opt/src/httpd/srclib
So the unzipped structure would be opt/src/httpd/srclib/apr and opt/src/httpd/srclib/apr-util
After this is done, you can run the configure with the following command
./configure --prefix=/opt/httpd-2.4.10 --with-included-apr
make
make install
This will install httpd in
/opt/httpd-2.4.10
You can check if the correct version of APR is referenced using the following command
/opt/httpd-2.4.10/bin/httpd -V
You should see output as below.
Server version: Apache/2.4.10 (Unix)
Server built: Dec 16 2014 11:46:58
Server's Module Magic Number: 20120211:36
Server loaded: APR 1.5.1, APR-UTIL 1.5.4
Compiled using: APR 1.5.1, APR-UTIL 1.5.4
Architecture: 64-bit
Server MPM: worker
threaded: yes (fixed thread count)
forked: yes (variable process count)
Server compiled with....
-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=256
-D HTTPD_ROOT="/opt/httpd-2.4.10"
-D SUEXEC_BIN="/opt/httpd-2.4.10/bin/suexec"
-D DEFAULT_PIDLOG="logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"