Developer 2.0 alpha make BATCH=yo error

[mehmetdemiroz]

make BATCH=yo

===>  Building for git-1.6.3.3
    CC fast-import.o
In file included from builtin.h:4,
                from fast-import.c:143:
git-compat-util.h:101:19: error: iconv.h: No such file or directory
gmake: *** [fast-import.o] Error 1
*** Error code 1

Stop in /usr/ports/devel/git.