Re: Problem in Tru64 with autoconf choosen cc flags [PATCH]

[Paul Eggert]

Nicolás Lichtmaier <address@hidden> writes:

> In Tru64 autoconf likes to select "-std1" as the flag to get an ANSI
> compiler.

I think that change was proposed by Kevin Ryde in June
<http://mail.gnu.org/archive/html/autoconf-patches/2003-06/msg00009.html>
and was later installed into Autoconf.  The problem is that plain "cc"
mishandles \x escapes in strings.

> The problem is that this is similar to the "-ansi" switch in
> GCC, and it turns off useful extensions.

What extensions are these?  Is this documented anywhere?

> The normal and recommended switch would be just "-std".

Besides \x,
<http://groups.google.com/groups?selm=9ro8ef%2427l6%241%40FreeBSD.csie.NCTU.edu.tw>
says that Tru64 "cc -std" defines __STDC__ to be 0.  It's clearly more
conservative to use -std1, but perhaps if -std1 disables some useful
extensions then we should revisit this issue.