[CMake] Release and Debug build linking

[Tamás Kenéz]

CMake supports multi-config generators such as Visual Studio and Xcode for
a long time.

There are two flavors of config-modules (and find-modules), the legacy one
which creates variables like MY_PACKAGE_LIBRARIES and the install-export
kind which creates IMPORTED targets.
Both kinds of modules support providing Debug and Release versions of the
same library from a single find-module or config-module.

So if your package's find-module or config-module is written correctly you
don't need any if's just a single find_package().

Tamas

On Tue, Oct 6, 2015 at 10:21 PM, Lee Butler <iraytrace at gmail.com> wrote:

> I am looking for a way to tell my project to link against external debug
> libraries with a debug build and external release libraries with a release
> build with Visual Studio.
>
> I sort of want to be able to say something like
> if (BuildingReleaseConfig)
> find_package(OtherPackage REQUIRED COMPONENTS one two three PATHS
> OtherPkgDir/Release)
> endif()
>
> if (BuildingDebugConfig)
> find_package(OtherPackage REQUIRED COMPONENTS oned twod threed PATHS
> OtherPkgDir/Debug)
> endif()
>
> the idea is that the if () tells CMake which build configuration the
> find_package results should go into.  Is there any way to tell CMake what
> to write into each VS configuration?
>
> I realize the traditional CMake way is to create only one build at a time
> and specify CMAKE_BUILD_TYPE, but we seem to have stepped beyond that with
> the Visual Studio generator.
>
> Lee
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