ownloading ruby-1.9.3-p426.tar.gz...
-> http://ftp.ruby-lang.org/pub/ruby/1.9/ruby-1.9.3-p426.tar.gz
Installing ruby-1.9.3-p426...

BUILD FAILED

Inspect or clean up the working tree at /tmp/ruby-build.20130514163512.25687
Results logged to /tmp/ruby-build.20130514163512.25687.log

Last 10 log lines:
compiling ruby.c
compiling safe.c
compiling signal.c
signal.c: In function ‘sigsegv’:
signal.c:622:2: error: implicit declaration of function ‘write’ [-Werror=implicit-function-declaration]
signal.c: In function ‘trap_handler’:
signal.c:812:17: warning: variable ‘proc’ set but not used [-Wunused-but-set-variable]
cc1: some warnings being treated as errors
make: *** [signal.o] Error 1
make: *** Waiting for unfinished jobs....