Hi, list! I've installed FreeSWITCH Version 1.2.3+git~20120920T220849Z~f718a5e8e6 (1.2.3; git at commit f718a5e8e6 on Thu, 20 Sep 2012 22:08:49 Z) Now, I try to update to the latest tree. While running "make current" in FS source directory, there is an error: ... make[1]: Leaving directory `/usr/src/freeswitch' make all make[1]: Entering directory `/usr/src/freeswitch' CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh /usr/src/freeswitch/build/config/missing --run aclocal-1.11 cd . && /bin/sh /usr/src/freeswitch/build/config/missing --run automake-1.11 --foreign CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh /usr/src/freeswitch/build/config/missing --run autoconf configure.in:141: error: possibly undefined macro: AC_PROG_LIBTOOL If this token and others are legitimate, please use m4_pattern_allow. See the Autoconf documentation. make[1]: *** [configure] Error 1 make[1]: Leaving directory `/usr/src/freeswitch' make: *** [current] Error 2 In addition, already installed: # rpm -qa | grep autoconf autoconf-2.62-12.3 # rpm -qa | grep libtool libtool-1.5.22-7.el5_4 What might be the reasons of this error? May be new versions of libtool/autoconf is required? -- Best regards, Vitaly.