kcc (WIP)

A toy self-hosted C compiler written in C, this compiler works on only Linux

Build

make kcc

Usage

sh kcc.sh -o <output-file> <input-file>

Run Examles

sh kcc.sh -o fib examples/fib.c
./fib

Features

Implemented

• +,-,*,/,%, ...expression
• if, for, while, switch, ...statement
• int, char, short, long, void, struct, union, enum,typedef
• static, extern
• variable length arguments fuction
• string, char literal
• block, line comment

Unimplemented

• preprocess
• struct, union initialization
• no-length array initialization
• some global variable initialization
• float, double, unsigned, _Bool
• bitfield
• some type cast
• goto
• inline function
• function with 7 or more arguments
• function pointer
• variable length array
• number literal
• some error handling
• tag scope

Test

build the 1st, 2nd and 3rd generation compilers and test them.

make test_all

References

• https://github.com/rui314/chibicc
• https://www.sigbus.info/compilerbook
• BNF
• Compiler Explorer