Using C API in Lycia

Using the C API in Lycia, you can call C functions in your 4GL code. C code cannot be embedded in Lycia 4GL, so to use it you must put it into a static or dynamic C library and then link this library to your program. Calling C functions from Lycia programs differs a bit from calling them using earlier compiler versions.

For C functions use, your programs must meet the following requirements:

• All C source files must be compiled into a dynamic or static library and linked against lib4glc in Lycia distribution;
• The ready C library should be linked to the 4GL program that uses the C functions.

 

 

The structure of this chapter is the following:

Creating C Sources

Creating Dynamic C Libraries

Calling C Functions From 4GL

Calling 4GL Functions From C

Migrating C-files (Functions, Libraries) from the Existing Project to Lycia