Building procedure

Using autogen I received many warnings and I am not confident the output is ok. The problem seems to be the input files for autogen and the instructions. As I am no autogen or automake expert, I copy the output verbatim and hope you guys are able to figure out whether it needs changing.

Output

[gbonnema@mahatma c]$ ./autogen.sh
aclocal
aclocal: warning: autoconf input should be named 'configure.ac', not 'configure.in'
autoheader
libtoolize --copy --force
libtoolize: putting auxiliary files in .'. libtoolize: copying file./ltmain.sh'
libtoolize: Consider adding AC_CONFIG_MACRO_DIR([m4])' to configure.in and libtoolize: rerunning libtoolize, to keep the correct libtool macros in-tree. libtoolize: Consider adding-I m4' to ACLOCAL_AMFLAGS in Makefile.am.
automake -a -c
automake: warning: autoconf input should be named 'configure.ac', not 'configure.in'
configure.in:9: warning: AM_INIT_AUTOMAKE: two- and three-arguments forms are deprecated. For more info, see:
configure.in:9: http://www.gnu.org/software/automake/manual/automake.html#Modernize-AM_005fINIT_005fAUTOMAKE-invocation
configure.in:12: installing './compile'
configure.in:13: installing './config.guess'
configure.in:13: installing './config.sub'
configure.in:9: installing './install-sh'
configure.in:9: installing './missing'
automake: warning: autoconf input should be named 'configure.ac', not 'configure.in'
src/ta_abstract/Makefile.am:4: warning: source file 'frames/ta_frame.c' is in a subdirectory,
src/ta_abstract/Makefile.am:4: but option 'subdir-objects' is disabled
automake: warning: possible forward-incompatibility.
automake: At least a source file is in a subdirectory, but the 'subdir-objects'
automake: automake option hasn't been enabled. For now, the corresponding output
automake: object file(s) will be placed in the top-level directory. However,
automake: this behaviour will change in future Automake versions: they will
automake: unconditionally cause object files to be placed in the same subdirectory
automake: of the corresponding sources.
automake: You are advised to start using 'subdir-objects' option throughout your
automake: project, to avoid future incompatibilities.
src/ta_abstract/Makefile.am:4: warning: source file 'tables/table_a.c' is in a subdirectory,
src/ta_abstract/Makefile.am:4: but option 'subdir-objects' is disabled
src/ta_abstract/Makefile.am:4: warning: source file 'tables/table_b.c' is in a subdirectory,
src/ta_abstract/Makefile.am:4: but option 'subdir-objects' is disabled
src/ta_abstract/Makefile.am:4: warning: source file 'tables/table_c.c' is in a subdirectory,
src/ta_abstract/Makefile.am:4: but option 'subdir-objects' is disabled

..... many repetitions of the last 2 lines ....