I looked everywhere I can find but can't seem to find a solution to this.
I'm using Xcode 4.5.1 on Lion 10.8.2, and am trying to run bundle for a Rails project and it keeps jamming up on this. I'm using the Thin gem for Heroku.
Bolanos@Jeremys-Mac-mini ⦿-1.9.3 fishfarm $ sudo gem install eventmachine
Password:
Building native extensions. This could take a while...
ERROR: Error installing eventmachine:
ERROR: Failed to build gem native extension.
/Users/Bolanos/.rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
checking for rb_trap_immediate in ruby.h,rubysig.h... no
checking for rb_thread_blocking_region()... yes
checking for inotify_init() in sys/inotify.h... no
checking for __NR_inotify_init in sys/syscall.h... no
checking for writev() in sys/uio.h... yes
checking for rb_thread_check_ints()... yes
checking for rb_time_new()... yes
checking for sys/event.h... yes
checking for sys/queue.h... yes
creating Makefile
make
compiling binder.cpp
make: g++-4.2: No such file or directory
make: *** [binder.o] Error 1
Gem files will remain installed in /Users/Bolanos/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0 for inspection.
Results logged to /Users/Bolanos/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0/ext/gem_make.out
For now I'm having to do without Thin. Does anyone have a solution?
You have to install the Command Line Tools package from developer.apple.com.
Also I was having troubles with the MacOSX10.6.sdk because some headers were missing there, so I installed the MacOSX10.5.sdk and all worked fine.