premake/BUILD.txt
2008-12-30 01:29:15 +00:00

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PREMAKE BUILD INSTRUCTIONS
As of version 4.0, Premake is written in a mix of C and Lua. This mix
enables many new features, but it makes building Premake a bit more
complicated.
If you downloaded a source code package from SourceForge, you will
find project files for Visual Studio, Code::Blocks, CodeLite, and
GNU make in the build/ directory. Build the release configuration
(the default for the makefiles) and you will find the executable in
bin/release ready to go.
If you want to use a debug build instead, or if you downloaded the
source code from Subversion instead of a SourceForge release, read
the next section for more information.
Visual Studio 2002 and 2003 users: these version of Visual Studio
are unable to build Premake due to string size limitations. Use one
the newer, free versions of Visual Studio C++ Express instead.
If you find all of this very confusing and need some help, see the
end of this document for contact information.
GENERATING THE PROJECT FILES
If you downloaded a source code package from SourceForge, the project
files are already included (in build/) and you can skip ahead to the
next section. If you downloaded the sources from Subversion, you'll
need to generate new projects files before you can build.
In order to generate the project files, you need a working version of
Premake, either 3.x or 4.x versions, installed on your system. You can
get it as source code or a prebuilt binary from the SourceForge
download page.
Once you have a working Premake installed, use it to generate the
project files. For Premake 4.x, type a command like:
premake4 gmake -- for GNU makefiles using GCC
premake4 vs2005 -- for a Visual Studio 2005 solution
For Premake 3.x, use the old command line format:
premake --target gnu
premake --target vs2005
Use the "--help" option to see all of the available targets.
RELEASE AND DEBUG BUILDS
Premake can be built in either "release" or "debug" modes. You can
choose which configuration to build with the "config" argument:
make config=debug -- build in debug mode
make config=release -- build in release mode
(IDEs like Visual Studio provide their own mechanism for switching
build configurations).
In release mode (the default) you can build and run Premake like any
other C application. In debug mode, Premake reads the Lua scripts from
the disk at runtime, enabling compile-less code/test iterations. But
it needs some help to find the scripts.
You can specify the location of the scripts in one of two ways: using
the /scripts command line argument, like so:
premake4 /scripts=~/Code/premake4/src gmake
Or by setting a PREMAKE_PATH environment variable.
PREMAKE_PATH=~/Code/premake4/src
As you can see, you need to specify the location of the Premake "src"
directory, the one containing "_premake_main.lua".
COMPILING SCRIPTS
If you make changes to the core Lua scripts, you can integrate them
into the release build using the "compile" command:
premake4 compile
This command compiles all of the scripts listed in _manifest.lua into
bytecode and embeds them into src/host/bytecode.c. The next release
build will include the updated scripts.
CONFUSED?
I'll be glad to help you out. Stop by the main project website where
you can leave a note in the forums (the preferred approach), join the
mailing list, or contact me directly.
http://industriousone.com/premake
Enjoy!