On Wed, 2005-06-01 at 13:45 -0400, Dan Manthey wrote: > On Wed, 1 Jun 2005, Ralf Corsepius wrote: > > > On Wed, 2005-06-01 at 18:33 +0200, Stepan Kasal wrote: > > > > > I think the best solution is to drop caching from programs.m4. > > Only over my dead body ;-) > > > > > Caching was invented mainly for expensive tests which involve > > > calling a compiler, which can be really slow. > > No, caching had been invented for faster interaction of several > > configure scripts (CONFIG_SUBDIRS) in large source trees. > > Can't you just `export PROG' in the root configure to pass the found > value to the sub-configures. Well, to some extend yes, but no in general: * We are talking about several dozens of values. This makes applying environment variables very unhandy. * Consider cross compilation. In this case you are building several sub- trees of a source-tree with different settings. * Environment variables impose side-effects. They are hard to trace and easy to miss. Ralf _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx http://lists.gnu.org/mailman/listinfo/autoconf
