New Rails Project: 'bundle install' can't install rails in gemfile

Question

I have installed a new rails project like so:

$ rails new site

and it executes and reaches:

bundle install

but then I get this error, when it appears to try installing a dependency

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb 
checking for libkern/OSAtomic.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling atomic_reference.c
atomic_reference.c:57:59: warning: incompatible pointer types passing 'void **' to      parameter of type 'volatile int64_t *' (aka 'volatile long long *') [-Wincompatible-pointer-types]
if (OSAtomicCompareAndSwap64(expect_value, new_value, &DATA_PTR(self))) {
                                                      ^~~~~~~~~~~~~~~
/usr/include/libkern/OSAtomic.h:507:93: note: passing argument to parameter '__theValue'   here
bool    OSAtomicCompareAndSwap64( int64_t __oldValue, int64_t __newValue, volatile int64_t   *__theValue );
                                                                                        ^
1 warning generated.
linking shared-object atomic_reference.bundle
clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
make: *** [atomic_reference.bundle] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/mikeguppy/.bundler/tmp/26234/gems/atomic-1.1.16 for inspection.
Results logged to /Users/mikeguppy/.bundler/tmp/26234/extensions/universal-darwin-13/2.0.0/atomic-1.1.16/gem_make.out
An error occurred while installing atomic (1.1.16), and Bundler cannot continue.
Make sure that `gem install atomic -v '1.1.16'` succeeds before bundling.

I have then tried installing atomic independently with:

gem install atomic

and again no luck.

I'm running Ruby 2.0 on Mac OS 10.9.2

---

Any help would be much appreciated!

Answer 1

this worked for me: sudo ARCHFLAGS=-Wno-error=unused-command-line-argument-hard-error-in-future gem install rails

Answer 2

I had this same problem and what worked for me was installing RVM, installing Ruby 2.1.1 (an upgrade from the 2.0 that comes packaged in Mavericks)...

rvm get stable
rvm reinstall 2.1.1

(use whatever the latest version is, for me that's 2.1.1)

...and then run rvm use 2.1.1 to make sure that I had switched to using that version.

After that, my gem installs ran smoothly.