configure.ac:22: error: 'AM_PROG_CC_STDC': this macro is obsolete.
You should simply use the 'AC_PROG_CC' macro instead.
Also, your code should no longer depend upon 'am_cv_prog_cc_stdc',
but upon 'ac_cv_prog_cc_stdc'.
/usr/share/aclocal-1.13/obsolete-err.m4:17: AM_PROG_CC_STDC is expanded from...
configure.ac:22: the top level
autom4te-2.69: /usr/bin/m4 failed with exit status: 1
aclocal-1.13: error: echo failed with exit status: 1