Bill,
> I guess I just don't understand this initial approach to dynamic apr-util
> components
> yet - it would be nice to not add case-by-case workarounds but to come up
> with the
> schema that lets us handle all of these bits dynamically.  I'm betting we
> will need to do apr 2.0 before we can realize such a vision.
I dont think so - just let me explain from my point of view:
when APR learned to deal with database drivers they were first only linked 
statically.
Some time later someone hacked the dynaload feature.
The APU_HAVE_XXX defines were needed (and are still needed) in order to build 
with statically linked drivers; but for DSO drivers they are not usable; they 
need to be absent (and not defined to 0); everything else makes the build 
process only more complex than needed.
IMO for all platforms where DSO is possible DSO drivers should be preferred so 
that the user can consume universal binaries, and choose at runtime config 
which drivers he wants to load; we cant count on any platform that postgresql, 
mysql, sqlite 2/3 and oracle client libs are actually installed.
So the default for every platform should be a DSO build whenever possible, or 
else we will never bring finally database functionality to the enduser.
Also it seems to me that you want to use the technically needed APU_HAVE_XXX 
defines for documentation purpose too -- but I think a better approach would be 
if we write some comments into apr.h(w|nw) and explain there that these 
APU_HAVE_XXX defines are only needed for statically builds, and are absent with 
DSO-enabled libapr-util; and that statically linked drivers are not recommended 
because then the resulted binary will depend on the driver client libs.
So if you would just remove the defines again at least for apu.hw and apu.hnw 
and replace with such a comment, then we would already be able to bring 
database driver support to the user with APR 1.2.x and up.
And then you could build next official httpd /apr version with APU_DSO_BUILD 
defined, and others (like me f.e.) could then provide the drivers which would 
load into that Apache version (if you dont want to ship these for whatever 
reason).

doesnt sound good?

Guen.



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