So patch FindDCMTK/FindTIFF in such a way that it add zlib to the dependencies, 
use that, and send the patch to your local maintainer?

On 2013-14-02, at 17:01:53 , Kent Williams wrote:

> @Nick find_package(DCMTK) does an OK job.  The specific issue I ran into is 
> that TIFF depends on Zlib and that dependency isn't pulled through into 
> DCMTK's dependencies.
> 
> The FindDCMTK.cmake that is in the current CMake distro has issues.  
> 
> @Ansis -- if all I cared about was getting one package built, I would do what 
> you suggest.  But I am trying to build robust CMake infrastructure here, that 
> will be useful beyond the one project I'm starting with.
> 
> 
> 
> On Thu, Feb 14, 2013 at 9:54 AM, Ansis Māliņš <ansis.mal...@gmail.com> wrote:
> If I guessed right, your problem is linker errors when building your project. 
> My solution is to just manually add whatever extra target_link_libraries are 
> needed to shut the linker up and move on.
> 
> 
> On Thu, Feb 14, 2013 at 5:48 PM, Nick Overdijk <n...@astrant.net> wrote:
> I don't really get your specific problem... CMake can find and install ITK 
> and DCMTK just fine here? (I had to manipulate the linker-order of DCMTK a 
> bit but that's almost to be expected, sadly).
> 
> You're saying that when you find_package(DCMTK) it's libraries doesn't 
> include some library it needs?
> 
> On 2013-14-02, at 16:45:12 , Kent Williams wrote:
> 
>> The specific problem I'm trying to solve:
>> 
>> Build DCMTK library, along with libraries upon which it depends, for use by 
>> ITK as a 'system library'
>> 
>> The problem: Setting up the External Projects is simple enough; the problem 
>> is that the revision/configuration of TIFF -- 3.9.4 -- by default requires 
>> ZLib.
>> 
>> DCMTK builds against this external TIFF library just fine.
>> 
>> What doesn't happen?  The TIFF's ZLib dependency doesn't get propogated to 
>> builds that depend on DCMTK, so Zlib is not on the DCMTK library list.
>> 
>> This wouldn't be a problem if TIFF and DCMTK were proper CMake builds. If 
>> they were when they export their libraries, find_package would carry along 
>> the dependencies of the imported libraries.
>> 
>> There doesn't appear to be either an elegant or a quick & dirty solution to 
>> this. The problem is that until DCMTK creates proper CMake config files that 
>> clue in ITK to DCMTK's own dependencies, ITK's own CMake config files will 
>> not reflect those dependencies.
>> 
>> Suggestions?
>> 
>> Oh, and by the way I am trying to get DCMTK to generate proper configuration 
>> files for find_package(NO_MODULE): 
>> https://github.com/InsightSoftwareConsortium/DCMTK/tree/AddProperConfig
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> 
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