This is a project for a self education and historical research of the C++ compiler.
A cfront compiler can help to get a concrete understanding how vtbls, class objects and so on really look like.
Additionally cfront can provide a useful platform to compile historic C++ programs.
PS: a sources was taken from the cfront re-port for the 4th edition of plan9 http://plan9.bell-labs.com/sources/extra/c++.2e.tgz http://9p.io/sources/contrib/john/package/packages/cfront.iso.bz2 http://www.quintile.net/plan9/c++/c++src.tbz
PPS: features not implement in cfront 3.x
Support for the `volatile' keyword.
Support for the `signed' keyword.
Support for wide character literals.
Support for wide character strings.
Exceptions.
- Support for the `long long` type (done)
Fix the issues of compilation under Ubuntu.
# Ubuntu package needed:
sudo apt install byacc
# Build
make
# Demo
make demo
# Build itself (bootstrap)
make cfront_c
# Clean
make clean
The extension .C was changed to .cpp to allow build on operating systems with case insensitive filesystems (OSX, WINDOWS).
I've included the generated parser so you don't need yacc/byacc installed to build it.
To build on OSX and Windows under MSYS2 I still need some hack fixes not included here yet (pull requests are wellcome).
It can build itself through valgrind without any invalid memory access (of course it leaks memory as usual for this kind of software and it's epoch).