upgrading packages from source
 

a comp has redhat 7 with pkg-config 0.7.0
i downloaded the latest 0.15 version...configure/make/make installed it
but the version number is still the same
do i have to manually move folders?

Since you have RH installed, it's a good bet that pkg-config installed from rpm. Installing a later package from source will not update the original install. You probably now have parallel installations, and the original is the working copy. To upgrade the rpm, you need to get the upgrade rpm and use 'rpm -U <packagename>' to upgrade an existing installation, or get the .src.rpm and build an installable binary rpm from that. Basically, tarballs don't upgrade installed rpm's or any other packaging system without help from a third-party application. They just install another copy.