> From: Peter Eisentraut <[EMAIL PROTECTED]> > Date: Sun, 24 Feb 2002 11:50:24 -0500 (EST) > > Autoconf 2.53 will be able to automatically replace a different, more > capable shell if the standard shell doesn't support a certain feature. > I'm not sure how exactly you would test for the bug you are speaking of, > but you might be able to convince Autoconf to skip certain suspicious > candidates.
It might suffice simply to configure GCC with Autoconf 2.52f or later, without changing Autoconf at all. Most likely the shells with serious performance problems will fail Autoconf's current test (which is to test for proper support of $LINENO). But, as you say, if this doesn't suffice, we might be able to fix Autoconf to test for the performance problem too. Also, you should be able to work around the problem even if you configure with Autoconf 2.52. Ask installers to set CONFIG_SHELL=/path/to/bash (or some other non-brain-damaged shell) in their environment, and to execute configure with "$CONFIG_SHELL configure" instead of "sh configure".
