use our own components.

component/poppler/buildout.cfg

 [buildout]
 parts = poppler
+extends =
+  ../curl/buildout.cfg
+  ../fontconfig/buildout.cfg
+  ../freetype/buildout.cfg
+  ../libjpeg/buildout.cfg
+  ../libpng/buildout.cfg
+  ../libtiff/buildout.cfg
+  ../pkgconfig/buildout.cfg
+  ../zlib/buildout.cfg
 
 [poppler]
 <= poppler-0.17.1
 
 [poppler-0.17.1]
 recipe = hexagonit.recipe.cmmi
-md5sum = 8d7276d1943078c76aabe9f2ec52d50b 
+md5sum = 8d7276d1943078c76aabe9f2ec52d50b
 url = http://poppler.freedesktop.org/poppler-0.17.1.tar.gz
+environment =
+  PATH=${pkgconfig:location}/bin:%(PATH)s
+  PKG_CONFIG_PATH=${fontconfig:location}/lib/pkgconfig:${freetype:location}/lib/pkgconfig:${libcurl:location}/lib/pkgconfig:${libpng:location}/lib/pkgconfig
+  CPPFLAGS=-I${libjpeg:location}/include -I${libtiff:location}/include -I${zlib:location}/include
+  LDFLAGS=-L${libjpeg:location}/lib -Wl,-rpath -Wl,${libjpeg:location}/lib -L${libtiff:location}/lib -Wl,-rpath -Wl,${libtiff:location}/lib -L${zlib:location}/lib -Wl,${zlib:location}/lib