The problem is, that when I run bundle update in my Rails app, I get the error message You have to install development tools first.ĮDIT: I managed to install the Command Line Tools from the package, but when I run then the gem installation, the error is still the same: You have to install development tools first. So at the moment, I don't know what or how to install it. I've tried to download the "Command Line Tools" from, the package for Mountain Lion from April, March and October, but when I ran each of them, I got this error message: If I open preferences in XCode, everything seems to be installed. version Prints xcode-select version information switch Sets the path for the current Xcode folder print-path Prints the path of the current Xcode folder But if I run it, I get: Usage: xcode-select -print-path I found this command: xcode-select -install.
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