Installation of rubygems for ruby-1.9.1-p243 is complete.

cat /Users/brainopia/.rvm/log/ruby-1.9.1-p243/make.error.log
main.c: In function ‘objcdummyfunction’:
main.c:19: warning: implicit declaration of function ‘objc_msgSend’
main.c: At top level:
main.c:19: warning: ‘objcdummyfunction’ defined but not used
eval.c: In function ‘ruby_cleanup’:
eval.c:139: warning: passing argument 1 of ‘ruby_init_stack’ discards qualifiers from pointer target type
gc.c: In function ‘garbage_collect_with_gvl’:
gc.c:597: warning: cast from pointer to integer of different size
readline.c: In function ‘username_completion_proc_call’:
readline.c:1156: error: ‘username_completion_function’ undeclared (first use in this function)
readline.c:1156: error: (Each undeclared identifier is reported only once
readline.c:1156: error: for each function it appears in.)
make[1]: *** [readline.o] Error 1
make: *** [mkmain.sh] Error 1