The overaching license for the LPC extensions is the Unlicense. Some modules or portions thereof in the src/kfun directory have their own open source license; please consult the relevant code for the details.

• doc
  documentation
• src
  API glue to compile with your module
• src/dbase
  example database module
• src/jit
  JIT compiler module
• src/kfun
  kfun modules

To build modules for most kfuns, just type make (or whatever your GNU make command is) in the src directory. On Windows, use Visual Studio 2010 with the solution file lpc-ext.sln, or use make EXT=dll with Cygwin.

Use make zlib to build the zlib module, for version 1.2.13. For other versions, use:

• 1.2.8
  make zlib ZLIB=1.2.8 ZLIBDIR=1.2.8
• 1.2.11
  make zlib ZLIB=1.2.11 ZLIBDIR=1.2.11
• 1.2.12
  make zlib ZLIB=1.2.12
• 1.3
  make zlib ZLIB=1.3
• 1.3.1
  make zlib ZLIB=1.3.1

Use make jit to build the JIT compiler module. This requires clang to be installed (any version from 3.7 onward will work). The jit module will start the actual JIT compiler as a separate program. It must be configured with the directory that contains the JIT compiler, and where the JIT cache will be created:

    modules = ([
		 "/home/server/lpc-ext/jit.1.4" :	/* JIT module */
		 "/home/server/lpc-ext/src/jit"	/* where jitcomp resides */
	      ]);

On Windows, there are different solution files for the components of the JIT compiler. lpc-ext.sln is used to build the JIT extension, jitcomp.sln is used to build the actual jit compiler which runs as a separate program, and which depends on clang. Clang can be installed as a component of Visual Studio Community 2022. Note that jitcomp.sln is a VS2019 solution, whereas lpc-ext.sln can be built with any Visual Studio version from 2010 onward.

Use make crypto to build the cryptographic functions module. This requires OpenSSL 1.1.1 or later.

Use make tls to build the TLS module (for DGD only). This also requires OpenSSL 1.1.1 or later.