Date: Wed, 29 Dec 1999 16:31:34 -0800 From: Mike Smith <msmith@freebsd.org> To: Amancio Hasty <hasty@rah.star-gate.com> Cc: current@freebsd.org Subject: Re: gcc compiler problem part deux Message-ID: <199912300031.QAA03126@mass.cdrom.com> In-Reply-To: Your message of "Wed, 29 Dec 1999 16:22:28 PST." <199912300022.QAA45237@rah.star-gate.com>
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This was discussed weeks ago, and the new behaviour is correct. You
should be using 'cc -E' instead.
>
> Forgot to post about this new feature of /usr/libexec/cpp :
> 1. Test file
> foo.c
>
> main() {
> #ifdef __FreeBSD__
> printf("hello\n");
> #endif
> }
>
> 1. old freebsd-current
>
> 2. gcc -v
> Using builtin specs.
> gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)
>
> /usr/libexec/cpp foo.c
> # 1 "foo.c"
> main() {
>
> printf("hello\n");
>
> }
>
> /usr/libexec/cpp has __FreeBSD_ defined --- and this is not
> problem.
>
> 2. Now a very recent FreeBSD -current
> gcc -v
> Using builtin specs.
> gcc version egcs-2.91.66 19990314 (egcs-1.1.2 release)
>
> /usr/libexec/cpp foo.c
> # 1 "foo.c"
>
>
> main() {
>
>
>
> }
>
> Voila! the "printf " disappeared.
>
> This behavior breaks the XFree86 3.9.17 build because the procedure
> to build imake depends on /usr/libexec/cpp defining __FreeBSD__
>
> I patched locally the imake build so just for FreeBSD it adds a
> -D__FreeBSD__
>
> I presumed that the latest /usr/libexec/cpp behavior is also going to
> break other package. Again for me is not a problem because
> after a few hours I managed to circumvent the new /usr/libexec/cpp
> feature.
>
> --
>
> Amancio Hasty
> hasty@rah.star-gate.com
>
>
>
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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>
--
\\ Give a man a fish, and you feed him for a day. \\ Mike Smith
\\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org
\\ and he'll hate you for a lifetime. \\ msmith@cdrom.com
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