Hello, I have been trying to compile the mpich 1.2.5 sources. In the sources for ch_p4 device ie, in mpich/mpid/ch_p4/p4 when I try doing a autoconf to recreate the configuration file I get the following error : configure.in:280: error: m4_defn: undefined macro: _m4_divert_diversion autoconf/programs.m4:451: AC_PROG_RANLIB is expanded from... configure.in:280: the top level I am using GNU autoconf 2.53 I tried calling autoupdate and stuffs thats already on the mailing lists. Wanted to know where is _m4_divert_diversion defined ? Can anybody help me ? Thanks Roopa