AC_DEFINE([ENABLE_PDF], [1], [Enable pdf support.])
FRONTEND_LIBS="$FRONTEND_LIBS $POPPLER_LIBS"
SHELL_LIBS="$SHELL_LIBS $POPPLER_LIBS"
+ SHELL_CFLAGS="$SHELL_CFLAGS $POPPLER_CFLAGS"
else
AC_MSG_WARN("PDF support is disabled since poppler-glib library version $POPPLER_REQUIRED or newer not found")
fi