On 1/30/2012 12:27 PM, Rainer Jung wrote:
> On 30.01.2012 19:10, William A. Rowe Jr. wrote:
>> On 1/30/2012 4:02 AM, Rainer Jung wrote:
>>>
>>> We add apu-1-confg --includes to CPPFLAGS and then use CPP and 
>>> apu_version.h to detect
>>> which version we have. That works for most gcc versions, but recent gcc 
>>> chokes, because
>>> apu_version.h includes apr_version.h, which can not be found due to our 
>>> setting of
>>> CPPFLAGS. gcc 4.6.2 based cpp then aborts parsing apu_version.h and our 
>>> version check
>>> fails.
>>>
>>> Adding apu-1-confg --includes *plus* apr-1-confg --includes to CPPFLAGS 
>>> before the version
>>> check fixes this.
>>
>> That is a bug in apu-1-config; which must include the apr-1 path in
>> its reported --includes (and --libs).  An apu which isn't usable because
>> it doesn't resolve apr is worthless.
> 
> I proposed the same patch as was applied long ago for trunk earliert today 
> for 2.2. That
> patch does not change apu-1-config behaviour.
> 
> Not sure whether I agree that apu should provide info about apr, since one 
> could argue
> that that's what apr-1-config is for. So I cross post dev@apr and this part 
> of the
> discussion could proceed there.
> 
>> That's how all .pc and other include/lib resolvers are supposed to behave.
>>
>> The same must be true for the linker.

You might want to review man pkg-config --cflags.  Note --includes is in the
plural.

If the user can't use the apu_dbd API by simply plugging in apr-util, then
we did something wrong.

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