Hello I 've recently downloaded and installed the opecv library.The problem is that i cant use any of the library header files because the path the library is installed is not searched by the gcc for headers.I know i can use the -idirafter and -I options but i want a way to permantently make gcc look for headers in the path the library is installed (well actually it's a tree of paths) .Is there any conf file i must change or a command or something?Any help is much appreciated. Nicko -- View this message in context: http://www.nabble.com/Problem-with-headers-of-new-library-t1467933.html#a3967457 Sent from the gcc - Help forum at Nabble.com.