Apache with SSL: “dftables: error while loading shared libraries”

While updating OpenSSL & Apache on a Linux machine (2.4.7-10smp), I came across an error when running ‘make‘ for Apache:
/usr/local/src/httpd-2.0.55/srclib/apr/libtool --silent --mode=link gcc -g -O2 -pthread -DLINUX=2 -D_REENTRANT -D_XOPEN_SOURCE=500 -D_BSD_SOURCE -D_SVID_SOURCE -D_GNU_SOURCE -DAP_HAVE_DESIGNATED_INITIALIZER -I/usr/local/src/httpd-2.0.55/srclib/apr/include -I/usr/local/src/httpd-2.0.55/srclib/apr-util/include -I. -I/usr/local/src/httpd-2.0.55/os/unix -I/usr/local/src/httpd-2.0.55/server/mpm/prefork -I/usr/local/src/httpd-2.0.55/modules/http -I/usr/local/src/httpd-2.0.55/modules/filters -I/usr/local/src/httpd-2.0.55/modules/proxy -I/usr/local/src/httpd-2.0.55/include -I/usr/local/src/httpd-2.0.55/modules/generators -I/usr/local/ssl/include/openssl -I/usr/local/ssl/include -I/usr/local/src/httpd-2.0.55/modules/dav/main -export-dynamic -L/usr/local/ssl/lib -o dftables -L/usr/local/ssl/lib dftables.lo -lssl -lcrypto
./dftables > /usr/local/src/httpd-2.0.55/srclib/pcre/chartables.c
./dftables: error while loading shared libraries: libssl.so.0.9.8: cannot open shared object file: No such file or directory
make[3]: *** [/usr/local/src/httpd-2.0.55/srclib/pcre/chartables.c] Error 127
make[3]: Leaving directory `/usr/local/src/httpd-2.0.55/srclib/pcre'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/usr/local/src/httpd-2.0.55/srclib/pcre'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/usr/local/src/httpd-2.0.55/srclib'
make: *** [all-recursive] Error 1

I figured this was because of an inconsistency between the two versions of OpenSSL I had on my system. The system came with the SSL libraries installed in /usr/lib, which I had updated as symlinks to my newly & manually installed directory /usr/local/ssl/lib. That wasn’t enough. Apache (dftables specifically) needs to know where the new libraries are, so we must tell it where to look. Do this by adding our new lib dir to /etc/ld.so.conf. Open it up in your favorite editor and add the following line:
Save & Exit, then run:
Now re-run make in your Apache dir and everything should go smoothly. Note that you may want to run make distclean first just to be sure you start with a clean slate.

One response to “Apache with SSL: “dftables: error while loading shared libraries””

  1. yaric says:

    Yep, it helped to me too.