The earliest versions of the very first c compiler known to exist in the wild written by the late legend himself dmr.
git clone http://git.hanabi.in/repos/legacy-cc.git
Log | Files | Refs | README

commit ccbe90a2803e2cc7e177c77cf1d5c19dd13f6d02
parent 3a3a97bf5d979536c99f348dad81f39d1a5fbc8f
Author: Roger <mortdeus@gmail.com>
Date:   Sun, 22 Oct 2017 03:40:47 -0500

Merge pull request #5 from watson/patch-1

Fix source link in README.md
MREADME.md | 2+-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md @@ -7,5 +7,5 @@ These are not capable of being compiled today with modern c compilers like gcc. You guys might be able to play around building this compilier with Aiju's pdp-11/unix emulator. I havent tried building this myself so I cant confirm it works, but I posted the link to his emulator for anybody wanting to hack around with it. -Source: [http://cm.bell-labs.com/cm/cs/who/dmr/primevalC.html] +Source: [https://www.bell-labs.com/usr/dmr/www/primevalC.html] PDP-11 Emulator[http://pdp11.aiju.de/]