It appears you need to install the ruby-dev or ruby-devel package for
the ruby/config.h header?

On 03/02/2013 05:51 AM, codehacker@comcast.net wrote:

> I'm a bit out of my depth here. Any insight would be appreciated.
>
> Installing FFI 1.4 with bundler I see:
>
> ** [out :: pa491.railsplayground.net]
> Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native
> extension.
>  ** [out :: pa491.railsplayground.net] 
>  ** [out :: pa491.railsplayground.net] /usr/local/bin/ruby extconf.rb
>  ** [out :: pa491.railsplayground.net] checking for ffi.h... no
>  ** [out :: pa491.railsplayground.net] checking for ffi.h in
> /usr/local/include,/usr/include/ffi... no
>  ** [out :: pa491.railsplayground.net] checking for
> rb_thread_blocking_region()... yes
>  ** [out :: pa491.railsplayground.net] checking for
> rb_thread_call_with_gvl()... yes
>  ** [out :: pa491.railsplayground.net] checking for
> rb_thread_call_without_gvl()... yes
>  ** [out :: pa491.railsplayground.net] checking for
> ffi_prep_cif_var()... no
>  ** [out :: pa491.railsplayground.net] creating extconf.h
>  ** [out :: pa491.railsplayground.net] creating Makefile
>  ** [out :: pa491.railsplayground.net] 
>  ** [out :: pa491.railsplayground.net] make
>  ** [out :: pa491.railsplayground.net] make: *** No rule to make
> target `/include/i686-linux/ruby/config.h', needed by
> `MemoryPointer.o'.  Stop.
>
> any suggestions for how to proceed would be greatly appreciated
> -- 
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