Error when updating my Ruby version using RVM on Mac OS X 10.6.6

I tried to update Ruby in my Mac OS X 10.6.6 system. Now I have 1.8.7, and I want to update to 1.9.2. When I typed rvm install 1.9.2 I got:

gal-harths-iMac:~ galharth$ rvm install 1.9.2
/Users/galharth/.rvm/rubies/ruby-1.9.2-p136, this may take a while depending on your cpu(s)...

ruby-1.9.2-p136 - #fetching 
ruby-1.9.2-p136 - #extracted to /Users/galharth/.rvm/src/ruby-1.9.2-p136 (already extracted)
ruby-1.9.2-p136 - #configuring 
Error running ' ./configure --prefix=/Users/galharth/.rvm/rubies/ruby-1.9.2-p136 --enable-shared  ', please read /Users/galharth/.rvm/log/ruby-1.9.2-p136/configure.log
There has been an error while running configure. Halting the installation.

I installed XCode and it still doesn't work.

This is the configure.log file:

[2011-02-08 17:10:04]  ./configure --prefix=/Users/galharth/.rvm/rubies/ruby-1.9.2-p136 --enable-shared  
checking build system type... i386-apple-darwin10.6.0
checking host system type... i386-apple-darwin10.6.0
checking target system type... i386-apple-darwin10.6.0
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/Users/galharth/.rvm/src/ruby-1.9.2-p136':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details
[2011-02-08 17:23:19]  ./configure --prefix=/Users/galharth/.rvm/rubies/ruby-1.9.2-p136 --enable-shared  
checking build system type... i386-apple-darwin10.6.0
checking host system type... i386-apple-darwin10.6.0
checking target system type... i386-apple-darwin10.6.0
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/Users/galharth/.rvm/src/ruby-1.9.2-p136':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details
[2011-02-08 20:44:14]  ./configure --prefix=/Users/galharth/.rvm/rubies/ruby-1.9.2-p136 -开发者_运维知识库-enable-shared  
checking build system type... i386-apple-darwin10.6.0
checking host system type... i386-apple-darwin10.6.0
checking target system type... i386-apple-darwin10.6.0
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/Users/galharth/.rvm/src/ruby-1.9.2-p136':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details
[2011-02-08 21:02:55]  ./configure --prefix=/Users/galharth/.rvm/rubies/ruby-1.9.2-p136 --enable-shared  
checking build system type... i386-apple-darwin10.6.0
checking host system type... i386-apple-darwin10.6.0
checking target system type... i386-apple-darwin10.6.0
checking for gcc... no
checking for cc... no
checking for cl.exe... no
configure: error: in `/Users/galharth/.rvm/src/ruby-1.9.2-p136':
configure: error: no acceptable C compiler found in $PATH
See `config.log' for more details

There are some oddities in your log file output. Your question shows you have Mac OS 10.6.6, but the log shows the OS is i386. Mac OS 10.6.6 should be x86_64. This means for some reason your system thinks it's 32-bit when it should be 64bit. Your version of XCode needs to be current, so if you didn't just download it and install it, then do so. The version of XCode on the Snow Leopard disk was buggy, and the version for Mac OS prior to Snow Leopard is out of date once you install 10.6 on your machine.

Here's some things to try. If one works you're done, otherwise try the next one.

1. Do rvm -v and note the version number, then rvm get head followed by rvm reload if the version number displayed after updating has changed. Try running rvm install 1.9.2-p136.
2. Delete the files in your ~/.rvm/src/ruby-1.9.2-p136 directory using rm ~/.rvm/src/ruby-1.9.2-p136, then try installing using the install command in #1.
3. Manually download a copy of Ruby 1.9.2-p136 into your ~/.rvm/archives directory and extract it into your ~/.rvm/src/ruby-1.9.2-p136 directory. You can cd ~/.rvm/archives, delete any existing old version of the archive, then use curl -O ftp://ftp.ruby-lang.org:21//pub/ruby/1.9/ruby-1.9.2-p136.tar.gz or wget ftp://ftp.ruby-lang.org:21//pub/ruby/1.9/ruby-1.9.2-p136.tar.gz to pull in a new version. Then cd ~/.rvm/src then the rm command from #2 above followed by tar zxvf ../archives/ruby-1.9.2-p136.tar.gz to extract the files, then try running the RVM install command in #1.

I have a machine that's behind a proxy that won't allow RVM to get to the Ruby repositories, causing the archive to actually be the proxy's failure notice. When RVM tried burst the tar file, it would fail, but not catch the problem, then would try to configure and fail. The fix was to manually download the archive and burst it into the src directory.

Using the command rvm install 1.9.3 --with-gcc=clang worked for me.

When this happened to me, I inserted the Snow Leopard disk, selected Optional Installs and installed the Xcode package. That solved the missing C compiler problem as described here. Thanks to this blog: http://www.brianp.net/2009/09/05/snow-leopards-ate-my-c-compiler/

In my case, once I solved the compiler problem I got a permissions error. Running as root in bash gave rvm the appropriate permissions.

If you are running Lion check to make sure you have the Command Line Tools installed. They separated them from XCode so they are a separate download now. You can find them here:

https://developer.apple.com/downloads/index.action