Looking for a version of libtoolize (which can have different names)...
./autogen.sh: glibtoolize: not found
Did not find glibtoolize
Did not find libtoolize15
./autogen.sh: libtoolize15: not found
./autogen.sh: libtoolize14: not foundDid not find libtoolize14

Found libtoolize
+ libtoolize -c -f 
libtoolize: putting auxiliary files in '.'.
libtoolize: copying file './ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
+ rm -rf autom4te.cache Makefile.in aclocal.m4 
+ aclocal --force -I m4 
/opt/csw/share/aclocal/gtk.m4:7: warning: underquoted definition of AM_PATH_GTK
/opt/csw/share/aclocal/gtk.m4:7:   run info Automake 'Extending aclocal'
/opt/csw/share/aclocal/gtk.m4:7:   or see https://www.gnu.org/software/automake/manual/automake.html#Extending-aclocal
configure.ac:25: error: Autoconf version 2.70 or higher is required
configure.ac:25: the top level
autom4te: /opt/csw/bin/gm4 failed with exit status: 63
aclocal: error: echo failed with exit status: 63