***** aclocal ***** ***** PWD: /usr/tmp/portage/net-voip/linphone-3.4.3-r1/work/linphone-3.4.3 ***** aclocal -I m4 configure.ac:41: error: 'AM_PROG_CC_STDC': this macro is obsolete.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:41: the top level autom4te-2.69: /usr/bin/m4 failed with exit status: 1 aclocal-1.13: error: echo failed with exit status: 1