Hello author , thanks for your contribution ! I'm interesting about this project , trying to compile your code on my Ubuntu 18.04LTS . I make sure I've installed required packages as directions show . But when I running . /configure , It shows :

./configure: line 16515: syntax error near unexpected token X264,'
./configure: line 16515: PKG_CHECK_MODULES(X264, x264)'

My questions are as follows :

1. How do I solve this problem ?
2. I see codes like " PKG_CHECK_MODULES (X264 , x264 ) " in configuration file , should I check that I've installed those packages ?

Thank a lot！