Just for a heads up libtoolize: `/usr/share/aclocal/ltsugar.m4' libtoolize: `/usr/share/aclocal/lt~obsolete.m4' libtoolize: Consider adding `AC_CONFIG_MACRO_DIR([m4])' to configure.ac and libtoolize: rerunning libtoolize, to keep the correct libtool macros in-tree. libtoolize: Consider adding `-I m4' to ACLOCAL_AMFLAGS in Makefile.am. Running aclocal -I /usr/share/xfce4/dev-tools/m4macros -I /usr/share/xfce4/dev-tools/m4macros... ac-wrapper: warning: invalid WANT_AUTOCONF 'latest'; ignoring. configure.ac:31: error: 'AM_CONFIG_HEADER': this macro is obsolete. You should use the 'AC_CONFIG_HEADERS' macro instead. /usr/share/aclocal-1.13/obsolete-err.m4:12: AM_CONFIG_HEADER is expanded from... configure.ac:31: the top level autom4te-2.69: /usr/bin/m4 failed with exit status: 1 aclocal-1.13: error: echo failed with exit status: 1 * ERROR: xfce-extra/xfce4-notes-plugin-9999 failed (unpack phase): FYI build still works if automake-1.12 is selected