checking for POPPLER... configure: error: Package requirements (poppler-glib >= 0.5.0 gdk-2.0 >= 2.6.0 pango) were not met: No package 'poppler-glib' found Consider adjusting the PKG_CONFIG_PATH environment variable if you installed software in a non-standard prefix. Alternatively, you may set the environment variables POPPLER_CFLAGS and POPPLER_LIBS to avoid the need to call pkg-config. See the pkg-config man page for more details.