I have a problem with gcc - compiling program written in c/c++ for Player.
when  I try to compile file *.cc , there is such  text:

g++ 'pkg-config --cflags playercore' -o playerclient  playerclient.cc 'pkg-config --libs playercore'
g++: pkg-config --cflags playercore: No such file or directory
g++: pkg-config --libs playercore: No such file or directory
playerclient.cc:4:36: error: libplayerc++/playerc++.h: No such file or directory
playerclient.cc:13: error: ¡®PlayerCc¡¯ is not a namespace-name
playerclient.cc:13: error: expected namespace-name before ¡®;¡¯ token
....

But I checked libs using 'pkg-config --libs playercore' and system shows :
-L/usr/local/lib -lplayercore -lpthread -lltdl -ldl -lplayerinterface -lplayercommon 

would you please tell me why? Thanks a lot!