[LRUG] Building gems on OSX 10.9 Mavericks

[carlos]

I also had this problem. The blog post that saved me:
http://new-bamboo.co.uk/blog/2013/10/24/3-quick-tips-for-coding-with-os-x-10-9-mavericks



On Thu, Nov 7, 2013 at 12:20 PM, David Salgado <david at digitalronin.com>wrote:

> I know a lot of people on here use Macs (apologies to those that don't),
> so I thought I'd share something that caused me a lot of grief yesterday,
> in the hope that it saves other people some time.
>
> The symptom was that "gem install mysql2" failed to build the code, but
> the error it gave was quite obscure;
>
>     checking for rb_thread_blocking_region()... *** extconf.rb failed ***
>
> Digging a lot deeper, there's this compilation error, when it's trying to
> run the linker;
>
>     .rvm/rubies/ruby-2.0.0-p247/include/ruby-2.0.0/ruby/ruby.h:51:21:
> error: string.h: No such file or directory
>
> It turns out that an update to Xcode helpfully deletes all the C header
> files needed to compile *anything*, and there's no obvious way to get it to
> put them back.
>
> The comment at Oct 28, 2013 2:40 PM  (currently the last comment on the
> page) at this URL explains what's going on and how to fix it;
>
>     https://discussions.apple.com/message/23497911#23497911
>
> The fix is to run "xcode-select --install" from the command line, which
> will put back the missing bits of the Xcode command-line tools.
>
> Hope this helps someone.
>
> David
>
>
>
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>
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