Problem with apxs under Fedora 7 x86_64

I was trying to compile mod_openpgp under Fedora 7 x86_64 with command: apxs -c -Wc,-g -i -l gpgme -l gpg-error -I /usr/include/ mod_openpgp.c Output was: cannot open /httpd/build/config_vars.mk: No such file or directory at /usr/sbin/apxs line 201. The problem caused because pkg-config –variable=libdir apr-1 was giving just nothing. It happens because I had installed apr-devel.i386 …