Now that LLVM 2.7 has been released, I thought I'd have a go at building macruby trunk against it. I had to build LLVM with RTTI support enabled, and made some minor patches to get through the initial compilation stage (basically removing includes of ModuleProvider.h and use of ExistingModuleProvider -- attached). Compiling with LLVM_TOT then seemed to be progressing well until it segfaulted here: /usr/bin/gcc -I. -I../../include -I../../include/ruby/backward -I../../include -I. -DHAVE_EDITLINE_READLINE_H -DHAVE_RL_GETC_FUNCTION -DHAVE_RL_FILENAME_COMPLETION_FUNCTION -DHAVE_RL_COMPLETION_MATCHES -DHAVE_RL_DEPREP_TERM_FUNCTION -DHAVE_RL_COMPLETION_APPEND_CHARACTER -DHAVE_RL_BASIC_WORD_BREAK_CHARACTERS -DHAVE_RL_COMPLETER_WORD_BREAK_CHARACTERS -DHAVE_RL_COMPLETER_QUOTE_CHARACTERS -DHAVE_RL_ATTEMPTED_COMPLETION_OVER -DHAVE_RL_LIBRARY_VERSION -DHAVE_RL_LINE_BUFFER -DHAVE_RL_POINT -DHAVE_RL_CLEANUP_AFTER_SIGNAL -DHAVE_RL_SET_SCREEN_SIZE -DHAVE_RL_GET_SCREEN_SIZE -DHAVE_REPLACE_HISTORY_ENTRY -DHAVE_REMOVE_HISTORY -DHAVE_CLEAR_HISTORY -fno-common -fexceptions -fno-common -pipe -O3 -g -Wall -Wno-parentheses -arch i386 -arch x86_64 -o readline.o -c readline.c /usr/bin/gcc -dynamic -bundle -undefined suppress -flat_namespace -arch i386 -arch x86_64 -o readline.bundle readline.o -L. -L../.. -arch i386 -arch x86_64 -lmacruby -ledit -lncurses cd ext/ripper && ../../miniruby -I../.. -I../../lib -r rbconfig -e "RbConfig::CONFIG['libdir'] = '../..'; require './extconf.rb'" checking for bison... yes unknown: [BUG] Segmentation fault MacRuby version 0.6 (ruby 1.9.0) [universal-darwin10.0, x86_64] sh: line 1: 95261 Abort trap ../../miniruby -I../.. -I../../lib -r rbconfig -e "RbConfig::CONFIG['libdir'] = '../..'; require './extconf.rb'" rake aborted! Command failed with status (134): [cd ext/ripper && ../../miniruby -I../.. -I...] Any idea what's going wrong here? My knowledge of macruby and llvm is somewhat limited. I'm building on 10.6, btw. Craig