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Re: libstdc++ configure time
- To: pedwards at disaster dot jaj dot com
- Subject: Re: libstdc++ configure time
- From: "Kaveh R. Ghazi" <ghazi at caip dot rutgers dot edu>
- Date: Sun, 18 Mar 2001 21:46:01 -0500 (EST)
- Cc: aoliva at redhat dot com, dje at watson dot ibm dot com, gcc at gcc dot gnu dot org, rth at redhat dot com
> On Sun, Mar 18, 2001 at 08:04:14PM -0500, David Edelsohn wrote:
> > Complaining about default shells on various platforms does not
> > really address the problem. The slow configure problem has been
> > reported since last Spring/Summer. The other issue that was
> > discovered is the repeated save and restores of
> > AC_LANG_SAVE/AC_LANG_RESTORE in inner feture test loops.
>
> That's already been addressed; we just test for lots fewer things now,
> and thereby do fewer loops. That's the only issue with slowness
> that's appeared until now; nobody's complained since those changes
> were made.
>
> I've tried converting the entire script to use C++ by default (since
> that's the environment under which all this will operate anyhow), but
> got lots of weird failures in otherwise-good tests. And again, the
> part that causes slowdowns is where we're testing for correctness
> during C linkage. We have to change to C for that.
> Phil
Have you thought about my proposal which allows you to do just one
AC_LANG_SAVE/AC_LANG_RESTORE no matter how many functions you test?
http://gcc.gnu.org/ml/gcc/2001-01/msg00971.html
http://gcc.gnu.org/ml/gcc/2001-01/msg01324.html
--Kaveh
--
Kaveh R. Ghazi Engagement Manager / Project Services
ghazi@caip.rutgers.edu Qwest Internet Solutions