I am having issues with the ruby gem atomic after upgrading to xcode 5.1 2 days ago
this is the error that I get:
Gem::Installer::ExtensionBuildError: 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="
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
Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/atomic-1.1.16 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/gems/atomic-1.1.16/ext/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.
Is read that it had something to do with the gcc version that came with the new xcode version, is this possible? do I need to downgrade or is there some other way to solve it? Or is the reason for this error not xcode?
thanks in advance
