I can't take credit for this... it comes from: https://svn.csub.edu/p/freebsd/browser/freebsd/ports/trunk/textproc/augeas/files/patch-gnulib%3A%3Alib%3A%3AMakefile.am?rev=73
--- gnulib/lib/Makefile.am.orig 2010-04-28 14:46:00.000000000 -0700 +++ gnulib/lib/Makefile.am 2010-04-28 14:47:00.000000000 -0700 @@ -395,7 +395,7 @@ case '$(host_os)' in \ darwin[56]*) \ need_charset_alias=true ;; \ - darwin* | cygwin* | mingw* | pw32* | cegcc*) \ + darwin* | cygwin* | mingw* | pw32* | cegcc* | freebsd*) \ need_charset_alias=false ;; \ *) \ need_charset_alias=true ;; \