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Re: Anyone remember what AC_PROG_GCC_TRADITIONAL was testing for?
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From: |
Zack Weinberg |
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Subject: |
Re: Anyone remember what AC_PROG_GCC_TRADITIONAL was testing for? |
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Date: |
Sun, 02 Apr 2023 23:11:08 -0400 |
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User-agent: |
Cyrus-JMAP/3.9.0-alpha0-238-g746678b8b6-fm-20230329.001-g746678b8 |
On Sun, Apr 2, 2023, at 5:17 PM, Paul Eggert wrote:
> That macro dates back to /usr/include header files that would play
> tricks like this
>
> #define _IO(n, x) (('n'<<8)+x)
>
> #define TIOCFOO _IO(T, 1)
Yeah, I thought it had to be something like that...
> AC_PROG_GCC_TRADITIONAL has not been needed for thirty years, and was
> declared obsolescent in Autoconf 2.60 (2006-06-05). Also, the Autoconf
> manual (as of the next version) states Autoconf assumes C89 or later. So
> if there's any issue with AC_PROG_GCC_TRADITIONAL at all, I suggest
> replacing its definition with:
>
> AU_DEFUN([AC_PROG_GCC_TRADITIONAL])
Done (more or less) in the patchset I just posted.
zw