SUMMARY: SunOS4.1.X cc under Solaris 2.X

From: Aggelos P. Varvitsiotis (
Date: Thu Nov 07 1996 - 04:00:18 CST

Hi all,

I remember having seen a conversation on using SunOS4.1.X's
C compiler under Solaris. At that time, the conclusion was
that this wasn't possible. Having run into a situation where
we needed to link old format .o files (that is, object files
produced with that older compiler) under Solaris 2.5.1, we
re-invested the whole thing and it turned out that it wasn't
so impossible after all (apologies if this is already known):

All we did was we binary-patched several hardwired paths in a
copy of SunOS4.1.4's cc, so that the compiler (running in
compatibility mode) now sees copies of the old precompiler,
compiler, linker, assembler, and libraries (at compile-time).
The (old a.out format) executables produced by the old compiler
run happily in compatibility mode under Solaris 2.5.1.

Since I don't have any idea on how legal this is (but suspect
not too much), I am rather reluctant to release the actual
patched code. All I want to point out is that it perfectly
technically achievable to produce old a.out format executables
under Solaris, thus answering a long-ago asked question
(again, apologies if this has already been answered).

Greetings to the list,

A. Varvitsiotis

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