Hi,

I was following this guide 
(https://developer.mozilla.org/en-US/docs/Mozilla/Firefox_OS/Firefox_OS_build_prerequisites#Run_Firefox_OS_Mac_Bootstrap)
but when I run this:
--
curl -fsSL 
https://raw.github.com/mozilla-b2g/B2G/master/scripts/bootstrap-mac.sh | bash
--
or (brew install mpfr)

it says:
---------------
Do you want to install gcc-4.6 by running Homebrew?
[/usr/local/bin/brew install 
https://raw.github.com/mozilla-b2g/B2G/master/scripts/homebrew/gcc-4.6.rb] 
[Y/n] Y
=> /usr/local/bin/brew install 
https://raw.github.com/mozilla-b2g/B2G/master/scripts/homebrew/gcc-4.6.rb
######################################################################## 100.0%
==> Installing dependencies for gcc-4.6: mpfr, libmpc
==> Installing gcc-4.6 dependency: mpfr
Error: mpfr dependency gmp was built with the following
C++ standard library: libstdc++ (from clang)

This is incompatible with the standard library being used
to build mpfr: libc++ (from clang)

Please reinstall gmp using a compatible compiler.
hint: Check https://github.com/mxcl/homebrew/wiki/C++-Standard-Libraries
--------------

This seems because of libstdc++ has been removed in favour of libc++

http://blog.new-bamboo.co.uk/2013/10/24/3-quick-tips-for-coding-with-os-x-10-9-mavericks

Any idea on how to fix this?
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