Eric Blake <ebb9@xxxxxxx> writes:
> You should consider either renaming the macro,
It's probably too late for that.
> updating the macro to error out (or at least warn) if user tries to
> name their auxiliary directory "aux" on the grounds that their
> project will not port to cygwin, mingw32, or djgpp without changes.
That would be reasonable, if someone wants to implement that.
> Also, the "File System Conventions" section of the manual should be
> updated
OK, I installed this. Thanks.
2004-06-04 Paul Eggert <eggert@xxxxxxxxxxx>
* doc/autoconf.texi (File System Conventions): Warn about
names like "aux". Problem reported by Eric Blake.
--- autoconf.texi.~1.821.~ 2004-06-04 10:36:40 -0700
+++ autoconf.texi 2004-06-04 13:35:05 -0700
@@ -9621,7 +9621,9 @@ esac
@noindent
will fail to properly detect absolute paths on those systems, because
they can use a drivespec, and will usually use a backslash as directory
-separator. The canonical way to check for absolute paths is:
+separator. If you want to be portable to @acronym{DOS} variants (at the
+price of rejecting valid but oddball Unix file names like @file{a:\b}),
+you can check for absolute file names like this:
@example
case $foo_dir in
@@ -9637,7 +9639,7 @@ Make sure you quote the brackets if appr
first character (@pxref{Limitations of Builtins}).
Also, because the colon is used as part of a drivespec, these systems don't
-use it as path separator. When creating or accessing paths, use the
+use it as path separator. When creating or accessing paths, you can use the
@code{PATH_SEPARATOR} output variable instead. @command{configure} sets this
to the appropriate value (@samp{:} or @samp{;}) when it starts up.
@@ -9705,12 +9707,21 @@ possible to share file trees containing
and @sc{lfn} environments, it also means the above problem applies there
as well.
-@item Invalid characters
+@item Invalid characters (@sc{lfn})
Some characters are invalid in @acronym{DOS} filenames, and should therefore
be avoided. In a @sc{lfn} environment, these are @samp{/}, @samp{\},
@samp{?}, @samp{*}, @samp{:}, @samp{<}, @samp{>}, @samp{|} and @samp{"}.
In a @sc{sfn} environment, other characters are also invalid. These
include @samp{+}, @samp{,}, @samp{[} and @samp{]}.
+
+@item Invalid names (@sc{lfn})
+Some @acronym{DOS} file names are reserved, and cause problems if you
+try to use files with those names. These names include @file{CON},
+@file{AUX}, @file{COM1}, @file{COM2}, @file{COM3}, @file{COM4},
+@file{LPT1}, @file{LPT2}, @file{LPT3}, @file{NUL}, and @file{PRN}.
+Remember that file names are case insensitive, so even names like
+@file{aux/config.guess} are disallowed.
+
@end table
@node Shell Substitutions
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