Subject: Re: [nb]make variable expansion bug [usr.bin/file] ?
To: None <>
From: Thierry Laronde <>
List: current-users
Date: 10/06/2002 21:53:44
On Sun, Oct 06, 2002 at 01:00:28AM +0200, Thierry Laronde wrote:
> Hello,
> I'm compiling current (actually a 21/09/02 snapshot) and a weird problem
> occurs with the compilation of `file'.
> The following variable assignment in the Makefile:
> MAGDIRF:sh=     echo ${.CURDIR}/magdir/[0-9a-z]*
> causes ./magdir/CVS to be included in the list and thus:
> magic:          ${MAGFILES}
>         cat ${MAGFILES} > ${.TARGET}
> fails, `cat' grumbling that ./magdir/CVS is a directory.
> Since the substitution of magdir/[0-9a-z]* behaves normally under my
> Bourne Shells (ash, pdksh and bash) is the substitution handled directly 
> by make and is this a known bug? Or Am I missing something obvious?

After looking at the sources for pmake, pmake is not at fault. The
substitution is invoked via "/bin/sh -c '<string>'" and here is the
"funny" result:

$ ls -al /bin/sh
lrwxrwxrwx    1 root     root            4 sep  5  2001 /bin/sh -> bash

$ pwd 

$ echo ./magdir/[a-z0-9]*
./magdir/acorn ./magdir/adi ./magdir/adventure [..] ./magdir/ctags ./magdir/cvs ./magdir/database [..] ./magdir/zilog ./magdir/zyxel

So OK everything fine. Now invoking `bash' (aka /bin/sh on the
Debian/GNU/Linux system) non interactively:

$ /bin/sh -c 'echo ./magdir/[a-z0-9]*'
./magdir/acorn [..] ./magdir/ctags ./magdir/CVS ./magdir/cvs ./magdir/database  [..] ./magdir/zyxel

Uh!!! `bash' now do it case insensitive!!!

Invoking ash:

$ /bin/ash -c 'echo ./magdir/[a-z0-9]*'
./magdir/acorn [..] ./magdir/ctags ./magdir/cvs ./magdir/database [..] ./magdir/zyxel

correct... and the same with pdksh.

`bash' is definitively not a system shell!

The bash version:

$ bash --version
GNU bash, version 2.03.0(1)-release (i386-pc-linux-gnu)
Copyright 1998 Free Software Foundation, Inc.

So I have now set my system shell to a system shell (i.e. ash) and maybe
could someone add a caveat somewhere.

Thanks and sorry for the wrong initial assertions.
Thierry Laronde (Alceste) <>
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