[Freeciv-Dev] (PR#6177)

["Reinier Post" <rp@xxxxxxxxxx>]

freeciv-1.14.1-beta1 fails the autogen.sh step on my box; here is the
literal output:

<PRE>
% autogen.sh                  + checking for autoconf >= 2.52 ... found 
2.57, ok.
+ checking for automake >= 1.4 ... found 1.7.6, ok.
+ checking for xgettext >= 0.10.36 ... found 0.11.1, ok.
+ checking for msgfmt >= 0.10.36 ... found 0.11.1, ok.
+ using new autoconf configuration (use --disable-autoconf2.52 to use 
old)
+ creating acinclude.m4
+ running aclocal ...
+ running autoheader ... 
configure.ac:147: warning: AC_LIB_PREPARE_PREFIX is m4_require'd but is 
not m4_defun'd
configure.ac:147: warning: AC_LIB_RPATH is m4_require'd but is not 
m4_defun'd
+ running autoconf ... 
configure:4844: error: possibly undefined macro: AC_LIB_PREPARE_PREFIX
      If this token and others are legitimate, please use 
m4_pattern_allow.
      See the Autoconf documentation.
configure:4845: error: possibly undefined macro: AC_LIB_RPATH
configure:4850: error: possibly undefined macro: AC_LIB_LINKFLAGS_BODY
configure:5118: error: possibly undefined macro: AC_LIB_APPENDTOVAR

autoconf failed
</PRE>
OS is SunOS 5.7.

The offending variable is defined in m4/iconf.m4.
On Per's suggestion I replaced it with the version from the stable 
branch, and the problem went away.