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obcpl (BCPL compiler)

This is an x86 (IA-32) port of the "classic" old BCPL compiler (around
1980) from the Tripos Research Group at Cambridge University.

As a real, working computer language implementation, that can be
studied, modified, and played with, this old BCPL compiler has a good
deal to recommend it. The compiler frontend consists of only about
2000 lines of BCPL code, and (as supplied here) compiles to a static
(fully-linked) x86 binary that is less than 36000 bytes in size.

x86_64 note: obcpl doesn't require multilib on Slackware64. It only
generates 32-bit x86 code, but the binaries it creates are 100%
statically linked, and will run fine on Slackware64 without multlib.