Premake 4.0 is finally done and available for download! The full change log:

• A new, more readable and extensible syntax for projects
• More robust syntax validation
• A new command-line format, with better argument validation
• Improved path handling across all project settings
• Upgraded to Lua 5.1.4
• Many, many bug fixes

RC4 -> Final

• Set Mac OS X linker flags for Code::Blocks
• Bug 2533504: Files above project root not added to project

RC3 -> RC4

• Embed scripts instead of bytecodes to avoid portability issues
• solution() and project() now only set the active object when called with a name; remains unchanged otherwise

RC2 -> RC3

• Bug: GCC Windows release builds of Premake4 crash on script errors
• Patched Lua to load precompiled bytecodes on PPC architectures.
• Display paths of generated files

RC1 -> RC2

• Enabled use of absolute Windows paths to different drive letter
• Bug: Post-build commands run before build on Code::Blocks
• Removed FatalWarnings build flag
• Fixed GCC 4.2 warnings (Ryan Pusztai)
• Enable Windows linking to shared libraries even with NoImportLib flag set (just in case)
• Fixed handling of paths in links
• Added "ToolsVersion" attribute to VS2005 and VS2008 C# projects
• Fixed separator between library dependencies in C++ makefiles
• Added missing os.copyfile() function
• Bug: Sometimes takes a long time to complete on Linux
• Enabled Lua popen support on Linux and Mac OS X

Many, many thanks to all the people who tried out the release candidates and provided feedback. You did a great job shaking out the bugs, and I feel confident in saying this is the best version yet, by far. But if you do run into trouble, I'm here to help.

Thank you again everyone, and enjoy!