./autogen.sh
...
configure.ac:1113: error: possibly undefined macro: PKG_CONFIG_LIBDIR
If this token and others are legitimate, please use m4_pattern_allow.
See the Autoconf documentation.
autoreconf: /usr/local/bin/autoconf failed with exit status: 1
yum install pkgconfig
Loaded plugins: fastestmirror, security
Setting up Install Process
Loading mirror speeds from cached hostfile
* base: mirror.amsiohosting.net
* epel: ftp.nluug.nl
* extras: mirror.amsiohosting.net
* remi: remi.mirror.wearetriple.com
* remi-php55: remi.mirror.wearetriple.com
* remi-php56: remi.mirror.wearetriple.com
* remi-test: remi.mirror.wearetriple.com
* updates: centos.mirror.triple-it.nl
Package 1:pkgconfig-0.23-9.1.el6.x86_64 already installed and latest version
Nothing to do
wtf?