Ich habe Probleme, Ruby mit RVM zu installieren, und dieses hat mich verblüfft. Ich verwende OS Mavericks mit den neuesten XCode- und Xcode-Befehlszeilentools. Ich habe ein (meines Wissens) identisches Setup auf einem anderen Rechner ohne Probleme.

RVM schien sich ohne Probleme installieren zu lassen.

Bei dem Versuch, rvm 2.1 zu installieren, wurde folgende Fehlermeldung angezeigt:

ruby-2.1.1 - #removing src/ruby-2.1.1..
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.9/x86_64/ruby-2.1.1.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for osx.
Certificates in '/usr/local/etc/openssl/cert.pem' already are up to date.
Requirements installation successful.
Installing Ruby from source to: /Users/user/.rvm/rubies/ruby-2.1.1, this may take a while depending on your cpu(s)...
ruby-2.1.1 - #downloading ruby-2.1.1, this may take a while depending on your connection...
ruby-2.1.1 - #extracting ruby-2.1.1 to /Users/user/.rvm/src/ruby-2.1.1...
ruby-2.1.1 - #applying patch /Users/user/.rvm/patches/ruby/changeset_r45225.diff.
ruby-2.1.1 - #applying patch /Users/user/.rvm/patches/ruby/changeset_r45240.diff.
ruby-2.1.1 - #configuring.

Error running './configure --prefix=/Users/user/.rvm/rubies/ruby-2.1.1 --with-opt-dir=/usr/local/opt/libyaml:/usr/local/opt/readline:/usr/local/opt/libksba:/usr/local/opt/openssl --enable-shared',
showing last 15 lines of /Users/user/.rvm/log/1394918736_ruby-2.1.1/configure.log
[2014-03-15 21:25:55] ./configure
current path: /Users/user/.rvm/src/ruby-2.1.1
PATH=/usr/local/opt/pkg-config/bin:/usr/local/opt/libtool/bin:/usr/local/opt/automake/bin:/usr/local/opt/autoconf/bin:/opt/local/bin:/opt/local/sbin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin:/Users/user/.rvm/bin
command(4): ./configure --prefix=/Users/user/.rvm/rubies/ruby-2.1.1 --with-opt-dir=/usr/local/opt/libyaml:/usr/local/opt/readline:/usr/local/opt/libksba:/usr/local/opt/openssl --enable-shared
checking build system type... x86_64-apple-darwin13.1.0
checking host system type... x86_64-apple-darwin13.1.0
checking target system type... x86_64-apple-darwin13.1.0
<stdin>:2:3: error: #error premature clang
        #error premature clang
         ^
1 error generated.
configure: error: clang version 3.0 or later is required
There has been an error while running configure. Halting the installation.

Mein erster Gedanke war, RVM-Anforderungen auszuführen, was zu einer weiteren Fehlermeldung führte

Checking requirements for osx.
Installing requirements for osx.
Updating system....
Installing required packages: gcc46.....
Error running 'requirements_osx_brew_libs_install gcc46',
showing last 15 lines of /Users/user/.rvm/log/1394919146/package_install_gcc46.log
+ case "$1" in
+ [[ -t 1 ]]
+ return 1
+ printf %b 'There were package installation errors, make sure to read the log.

Try `brew tap --repair` and make sure `brew doctor` looks reasonable.

Check Homebrew requirements https://github.com/mxcl/homebrew/wiki/Installation\n'
There were package installation errors, make sure to read the log.

Try `brew tap --repair` and make sure `brew doctor` looks reasonable.

Check Homebrew requirements https://github.com/mxcl/homebrew/wiki/Installation
+ case "$_system_version" in
+ return 1
Requirements installation failed with status: 1.

Ich folgte den Ratschlägen hier und habe jetzt stundenlang online gesucht, aber noch keine Lösung hat für mich funktioniert. Alle Gedanken und Ideen sind herzlich willkommen - dieser hat mich ratlos gemacht.