Re: AT&T C Compiler Source Code

Warren Toomey <>
25 Jan 1998 00:52:11 -0500

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Re: AT&T C Compiler Source Code (Warren Toomey) (1998-01-25)
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From: Warren Toomey <>
Newsgroups: comp.compilers
Date: 25 Jan 1998 00:52:11 -0500
Organization: Compilers Central
Keywords: history

In article 98-01-090, Matthew Webb
<> writes:
> Hi,
> I am looking for the AT&T C Compiler Source in Assembly
> Language. The first one written by Ritchie and the boys. Does anyone
> have any information about this?
> Thanks

The C compiler in 5th Edition UNIX and onwards (i.e 1975 onwards) was
written in C code itself. The source code is still covered by the respective
UNIX source licenses, which are currently held by SCO.

Anyone interested in persuading SCO to make source to these old Unixes
(and thus the compilers) cheaply available should look at the PUPS
web page at, and sign the petition.


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