See the pkg-config man page for more details.

*** error during stage configure of gtk+: ########## Error running ./autogen.sh --prefix /opt/gtk --with-gdktarget=quartz --without-libjasper --disable-static --disable-gtk-doc --disable-docs --disable-scrollkeeper *** [1/1]

  [1] rerun stage configure
  [2] ignore error and continue to build
  [3] give up on module
  [4] start shell
  [5] go to stage force_checkout
  [6] go to stage force_clean
  [7] go to stage force_distclean