Yes i have..

xcodebuild -version
Xcode 4.2
Build version 4D199

Adrian

On Nov 9, 2011, at 11:59 AM, Colby Gutierrez-Kraybill wrote:

> 
> Have you installed Xcode/Developer tools?
> 
> - Colby
> 
> On Nov 8, 2011, at 5:29 PM, Adrian wrote:
> 

>> When trying to install the lib ffi as a ruby gem from bundler or brew
>> i get the following output.. Has anybody run into this and found a
>> solution?
>> 
>> Adrian
>> 
>> 
>> 11.2.0 Darwin Kernel Version 11.2.0: Tue Aug  9 20:54:00 PDT 2011;
>> root:xnu-1699.24.8~1/RELEASE_X86_64 x86_64
>> 
>> 
>> 
>> Installing ffi (1.0.9) with native extensions
>> Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native
>> extension.
>> 
>>       /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/
>> ruby extconf.rb
>> checking for ffi.h in /usr/local/include... no
>> checking for rb_thread_blocking_region()... no
>> checking for ruby_thread_has_gvl_p()... no
>> checking for ruby_native_thread_p()... no
>> checking for rb_thread_call_with_gvl()... no
>> creating extconf.h
>> creating Makefile
>> 
>> make
>> Configuring libffi for rch
>> configure: WARNING: If you wanted to set the --build type, don't use --
>> host.
>>   If a cross compiler is detected then cross compile mode will be
>> used.
>> Invalid configuration `rch-apple-darwin': machine `rch-apple' not
>> recognized
>> configure: error: /bin/sh /Users/adrian/.bundler/tmp/21514/gems/
>> ffi-1.0.9/ext/ffi_c/libffi/config.sub rch-apple-darwin failed
>> make[1]: *** No targets specified and no makefile found.  Stop.
>> Configuring libffi for rch
>> configure: WARNING: If you wanted to set the --build type, don't use --
>> host.
>>   If a cross compiler is detected then cross compile mode will be
>> used.
>> Invalid configuration `rch-apple-darwin': machine `rch-apple' not
>> recognized
>> configure: error: /bin/sh /Users/adrian/.bundler/tmp/21514/gems/
>> ffi-1.0.9/ext/ffi_c/libffi/config.sub rch-apple-darwin failed
>> make[1]: *** No targets specified and no makefile found.  Stop.
>> make: *** [/Users/adrian/.bundler/tmp/21514/gems/ffi-1.0.9/ext/ffi_c/
>> libffi/.libs/libffi_convenience.a] Error 2
>> 
>> 
>> Gem files will remain installed in /Users/adrian/.bundler/tmp/21514/
>> gems/ffi-1.0.9 for inspection.
>> Results logged to /Users/adrian/.bundler/tmp/21514/gems/ffi-1.0.9/ext/
>> ffi_c/gem_make.out
>> An error occured while installing ffi (1.0.9), and Bundler cannot
>> continue.
>> Make sure that `gem install ffi -v '1.0.9'` succeeds before bundling.

>