Reconstruction of Borland C++ 2.0 Compiler Source Code Achieved

Borland C++ 2.0, the successor to Turbo C++, was a significant integrated development environment (IDE) for C and C++ programming, first released in 1991. Although the original source code was not made publicly available by Borland, efforts by Abedegno have led to a reconstruction that is claimed to be a byte-perfect recreation of the original toolchain.

This reconstruction ensures that the binaries compiled using the new toolchain are identical to those produced by the original Borland C++ 2.0. The process of creating the source code from the original binaries is detailed in a separate document, which includes the use of Abedegno’s Claude Code-based Exhume tool to facilitate the effort.

The availability of the BC++ 2.0 source code is particularly beneficial for projects focused on DOS-based software from that era, as well as for historical interest. At the time of its release, the C programming language had just been standardized as C89, while the first C++ standard would not arrive until 1998.

Stephen Walters contributed to this development by providing the initial tip regarding the reconstruction.

Source: Hackaday