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POcan't install eventmachine ruby gem. using RVM, MacOS Lion
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copied!<p>I'm using RVM v1.10.2, ruby v1.9.3p0, and ruby gems v1.8.15 on MacOS Lion (kernel v11.4.0).</p> <p>I created a gemset for a rack-based project using sinatra and installed a bunch of gems, including eventmachine (as a result of installing thin). No problems.</p> <p>A few weeks later I created a new gemset for a similar project, but it was all fail-zoar when I tried to install thin. Looks like there's a problem with compiling eventmachine. I tried creating a fresh gemset and installing eventmachine by itself. No luck. I don't know why it worked once, but now fails.</p> <hr> <p>Whenever I <code>gem install eventmachine</code>, it goes like this:</p> <pre><code>Fetching: eventmachine-0.12.10.gem (100%) Building native extensions. This could take a while... ERROR: Error installing eventmachine: ERROR: Failed to build gem native extension. /Users/jared/.rvm/rubies/ruby-1.9.3-p0/bin/ruby extconf.rb checking for rb_trap_immediate in ruby.h,rubysig.h... no checking for rb_thread_blocking_region()... yes checking for inotify_init() in sys/inotify.h... no checking for __NR_inotify_init in sys/syscall.h... no checking for writev() in sys/uio.h... yes checking for rb_thread_check_ints()... yes checking for rb_time_new()... yes checking for sys/event.h... yes checking for sys/queue.h... yes creating Makefile make </code></pre> <p>then it issues a bajillion warnings as it tries to compile various files, then, finally, this interesting bit:</p> <pre><code>linking shared-object rubyeventmachine.bundle ld: warning: ignoring file /usr/local/lib/libz.dylib, file was built for unsupported file format which is not the architecture being linked (x86_64) ld: in /usr/local/lib/libz.1.dylib, file was built for unsupported file format which is not the architecture being linked (x86_64) for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [rubyeventmachine.bundle] Error 1 </code></pre> <p>Here's the complete output: <a href="https://dl.dropbox.com/u/5382910/stackoverflow/gem_make.out" rel="nofollow">https://dl.dropbox.com/u/5382910/stackoverflow/gem_make.out</a></p> <hr> <p>I don't have problems installing other gems, so I'm doubting it's a compiler issue, but here's the output of <code>gcc -v</code>, in case anyone might spot something:</p> <pre><code>Using built-in specs. Target: i686-apple-darwin11 Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.1~1/src/configure --disable-checking --enable-werror --prefix=/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.1~1/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1 Thread model: posix gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.1.00) </code></pre> <hr> <p>Any help is much appreciated!</p>

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