vlc-plugin.pc: use pkgincludedir

src/Makefile.am

@@ -22,7 +22,6 @@ SUFFIXES = .pc.in .pc
 # Headers
 ###############################################################################
 
-pkgincludedir = $(includedir)/vlc
 pluginsincludedir = $(pkgincludedir)/plugins
 
 pkginclude_HEADERS = \

src/vlc-plugin.pc.in

@@ -2,11 +2,12 @@ prefix=@prefix@
 exec_prefix=@exec_prefix@
 libdir=@libdir@
 includedir=@includedir@
+pkgincludedir=@pkgincludedir@
 
 Name: VLC plugin API
 Description: VLC media player plugin interface
 Version: @VERSION@
-Cflags: -I${includedir} -I${includedir}/vlc/plugins \
+Cflags: -I${includedir} -I${pkgincludedir}/plugins \
 	-D_FILE_OFFSET_BITS=64 \
 	-D__USE_UNIX98 \
 	-D_LARGEFILE64_SOURCE \