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Re: Bug in gnulib-tools prevents bison from bootstrapping
From: |
Paul Eggert |
Subject: |
Re: Bug in gnulib-tools prevents bison from bootstrapping |
Date: |
Sat, 23 Jun 2007 00:42:38 -0700 |
User-agent: |
Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) |
Bruno Haible <address@hidden> writes:
> libtool.m4 also tries other workarounds: searching for an 'echo' program
> in $PATH:/usr/ucb (but how is this better than 'cat'?) or using a built-in
> 'print -r' command (which shells except ksh have this?) or using 'printf'
> (is that portable nowadays?).
I think printf is portable nowadays, at least to the platforms that
gnulib-tool is likely to run on.
One advantage of using printf is that it won't mishandle a string that
happens to equal "-n".
Autoconf prefers "printf" in its "echo" substitute. (The substitute
purposely does not treat "-n" specially; "-n" is just another string,
which is The Right Thing, usually.) Autoconf falls back on some other
stuff if 'printf' doesn't work, but I doubt whether that matters for
gnulib-tool purposes.
- Re: Bug in gnulib-tools prevents bison from bootstrapping, (continued)