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Re: [FYI] {master} maint: assume 'test -x' is portable

From: Paul Eggert
Subject: Re: [FYI] {master} maint: assume 'test -x' is portable
Date: Thu, 23 Feb 2012 14:59:54 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20120131 Thunderbird/10.0

It's been Quite Some Time since I've had to deal with
4.3BSD, or any host with a "test -x" problem, so I suggest
the following patch to the Autoconf manual:

diff --git a/doc/autoconf.texi b/doc/autoconf.texi
index 607d8dc..443ec07 100644
--- a/doc/autoconf.texi
+++ b/doc/autoconf.texi
@@ -18125,9 +18125,9 @@ It is safe to use @samp{!} as a @command{test} 
operator.  For example,
 To enable @command{configure} scripts to support cross-compilation, they
 shouldn't do anything that tests features of the build system instead of
 the host system.  But occasionally you may find it necessary to check
-whether some arbitrary file exists.  To do so, use @samp{test -f} or
address@hidden -r}.  Do not use @samp{test -x}, because 4.3BSD does not
-have it.  Do not use @samp{test -e} either, because Solaris @command{/bin/sh}
+whether some arbitrary file exists.  To do so, use @samp{test -f},
address@hidden -r}, or @samp{test -x}.  Do not use @samp{test -e},
+because Solaris @command{/bin/sh}
 lacks it.  To test for symbolic links on systems that have them, use
 @samp{test -h} rather than @samp{test -L}; either form conforms to
 Posix 1003.1-2001, but older shells like Solaris 8
@@ -26320,8 +26320,8 @@ Unix M4 started to dump core because of the length of 
 macros that Autoconf defined, and several bugs showed up in GNU
 M4 as well.  Eventually, we realized that we needed to use some
 features that only GNU M4 has.  4.3BSD M4, in
-particular, has an impoverished set of builtin macros; the System V
-version is better, but still doesn't provide everything we need.
+particular, had an impoverished set of builtin macros; the System V
+version was better, but still didn't provide everything we need.
 More development occurred as people put Autoconf under more stresses
 (and to uses I hadn't anticipated).  Karl Berry added checks for X11.

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