OS X

cc65 on OS X

cc65 runs perfectly fine under various versions of OS X. There are no binary installation packages distributed yet, but one can quite easily build his own binaries from sources.

Please note that in order to build cc65 from sources one requires a working UNIX development environment (especially C compiler), which is not a part of the default system installation. The main requirement is then:

Apple Developer's Tools - please download appropriate, latest package available for your OS version and install it with "UNIX Development/Command Line Tools" option. This option places all necessary command line tools, headers, and other files required for typical UNIX style development, where they are expected to be in a working unix development environment. At the time of writing Apple provides necessary developer tools free of charge but requires registration in order to download the software. With more recent versions of OSX the "Xcode" development environment can be installed from "App Store" without registering at Apple's developers website. Moreover it is no longer necessary to install whole set of Developer Tools, especially the "Xcode" itself. It is enough to install "Command Line Tools for Xcode" package, which contains necessary tools you need in order to checkout and build cc65 from source. One of the easiest way to install said command line tools on OSX 10.9 "Mavericks" is to open Terminal.app and issue a command:

$ xcode-select --install

choose "Install" from the dialog box that appears when the command is not found. There are more thorough explanations available e. g. in This blog post.

Since cc65 is very cleanly written, no additional configuration processes are needed. Once the necessary prerequisites are in place, start your terminal and proceed as described in Getting Started.