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Re: Problems with evolving feature test macros?

From: Paul Eggert <eggert at cs dot ucla dot edu>
To: Rich Felker <dalias at aerifal dot cx>
Cc: mtk dot manpages at gmail dot com, "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
Date: Tue, 11 Mar 2014 13:52:02 -0700
Subject: Re: Problems with evolving feature test macros?
Authentication-results: sourceware.org; auth=none
References: <CAKgNAki3SzAN8rZjvMQxbqDkpRGBzsmNGBKMJ0DDcMAG0nG8gQ at mail dot gmail dot com> <531F34C8 dot 9000500 at cs dot ucla dot edu> <20140311191342 dot GO184 at brightrain dot aerifal dot cx>

On 03/11/2014 12:13 PM, Rich Felker wrote:

It's typically only a minor annoyance.

No, it's very unfortunate because defining _GNU_SOURCE breaks
strerror_r, basename,

Even those glitches, which are indeed unfortunate, are minorannoyances. You can easily fix the former with Autoconf'sAC_FUNC_STERROR_R macro, for example, and that's what GNU applicationscommonly do.And basename is so broken that portable applications shouldavoid it and write their own.


The real problems in portability are elsewhere.  These problems are minor.

Follow-Ups:
- Re: Problems with evolving feature test macros?
  - From: Rich Felker

References:
- Problems with evolving feature test macros?
  - From: Michael Kerrisk (man-pages)
- Re: Problems with evolving feature test macros?
  - From: Paul Eggert
- Re: Problems with evolving feature test macros?
  - From: Rich Felker

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