I'm running 4.3BSD-Reno on an emulated VAX-11/780. The C compiler
installed is the one from Berkeley, dated 1985-86 (according to `what`).

I've hit a bit of a roadblock because I can't find a way to list all of
cpp's pre-defined macros on this system. The method I use with GNU cpp
doesn't work, and I don't have a man page installed for cpp
(the cc man page doesn't say anything about this either).

Does anyone know a way to do this?

TIA!

--
Dario Niedermann. Also on the Internet at:

gopher://darioniedermann.it/ <> https://www.darioniedermann.it/

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On 2020-07-10, Dario Niedermann wrote:

I'm running 4.3BSD-Reno on an emulated VAX-11/780. The C compiler
installed is the one from Berkeley, dated 1985-86 (according to `what`).

I've hit a bit of a roadblock because I can't find a way to list all of
cpp's pre-defined macros on this system. The method I use with GNU cpp doesn't work, and I don't have a man page installed for cpp
(the cc man page doesn't say anything about this either).

It may not be possible...

Can't find a manpage for cpp on 4.3 Reno, but I could find cpp manpages
for other 1986 systems which were essentially BSD with some vendor's
additions, and these don't mention a way to get a list of predefined
macros, they only say which macros were defined by that particular vendor.

I may go and get the microVAX out of the attic and see if I can find a
way... unless somebody replies with a way first.

C

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Claudio Calvelli <[email protected]d> wrote:

It may not be possible...

Can't find a manpage for cpp on 4.3 Reno, but I could find cpp
manpages for other 1986 systems which were essentially BSD with some
vendor's additions, and these don't mention a way to get a list of
predefined macros, they only say which macros were defined by that
particular vendor.

Thanks for your input. For now, I've settled with grepping
/usr/{include,sys} for #defines, but I'm sure the results are
incomplete. For example, 'vax' is missing, but it's still defined as a
macro, who knows where.

I may go and get the microVAX out of the attic and see if I can find a
way... unless somebody replies with a way first.

If you have any news, please let me know...

--
Dario Niedermann. Also on the Internet at:

gopher://darioniedermann.it/ <> https://www.darioniedermann.it/

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In article <[email protected]>,
Dario Niedermann <[email protected]> wrote:

Thanks for your input. For now, I've settled with grepping
/usr/{include,sys} for #defines, but I'm sure the results are
incomplete. For example, 'vax' is missing, but it's still defined as a
macro, who knows where.

In the C preprocessor itself. Look for calls to stsym in /usr/src/lib/cpp/cpp.c

-- Richard

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Richard Tobin <[email protected]> wrote:

In the C preprocessor itself. Look for calls to stsym in /usr/src/lib/cpp/cpp.c

Found them, thank you: indeed, "vax" and other useful macros are
defined there.

Kudos for the remarkable knowledge of the 4.3BSD source code.

--
Dario Niedermann. Also on the Internet at:

gopher://darioniedermann.it/ <> https://www.darioniedermann.it/

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