The imported target "assimp::assimp" references the file which doesn't exist

[wanlizhu]

Describe the bug
I kind of figuring out the reason for this bug. I open this issue just in case you guys can have a better solution.

I install assimp package successful, and the CMake complains about the imported library path of target assimp::assimp which doesn't exist in the file system. But, it does exist with a different name.

I have both MSVC2017 and MSVC2019 installed on my machine. The compiler that builds assimp is MSVC2019, so the output name of assimp is assimp-vc142-mtd.lib. When I find and link to assimp in my own project, assimp's CMake configuration is trying to find assimp-vc141-mtd.lib .

The -vc141 suffix which CMake failed to find in file system is determined at line 36 in file vcpkg\installed\x64-windows\share\assimp\assimpTargets-debug.cmake.

I believe that this problem can be avoided if the output name of assimp doesn't contain compiler version tag, -vc142.

Can we rename assimp's output name to something without redundant suffix like -vc142?

Environment

• OS: [Window]
• Compiler: MSVC2019 and MSVC2017

To Reproduce
Steps to reproduce the behavior:

1. ./vcpkg install assimp
2. find_package(assimp REQUIRED)
3. error shows up

reproduce code:

./vcpkg install assimp
find_package(assimp  REQUIRED)

Expected behavior
no error

Failure logs

CMake Error at C:/Users/zhuwa.ADS/vcpkg/installed/x64-windows/share/assimp/assimpTargets.cmake:86 (message):
[cmake]   The imported target "assimp::assimp" references the file
[cmake] 
[cmake]      "C:/Users/zhuwa.ADS/vcpkg/installed/x64-windows/debug/lib/assimp-vc141-mtd.lib"
[cmake] 
[cmake]   but this file does not exist.  Possible reasons include:
[cmake] 
[cmake]   * The file was deleted, renamed, or moved to another location.
[cmake] -- Configuring incomplete, errors occurred!
[cmake] See also "C:/Users/zhuwa.ADS/Desktop/GraphicsEngine/Experimental/DejaVu/build/CMakeFiles/CMakeOutput.log".
[cmake] See also "C:/Users/zhuwa.ADS/Desktop/GraphicsEngine/Experimental/DejaVu/build/CMakeFiles/CMakeError.log".
[cmake] 
[cmake]   * An install or uninstall procedure did not complete successfully.
[cmake] 
[cmake]   * The installation package was faulty and contained
[cmake] 
[cmake]      "C:/Users/zhuwa.ADS/vcpkg/installed/x64-windows/share/assimp/assimpTargets.cmake"
[cmake] 
[cmake]   but not all the files it references.
[cmake] 
[cmake] Call Stack (most recent call first):
[cmake]   C:/Users/zhuwa.ADS/vcpkg/installed/x64-windows/share/assimp/assimp-config.cmake:1 (include)
[cmake]   C:/Users/zhuwa.ADS/vcpkg/scripts/buildsystems/vcpkg.cmake:329 (_find_package)

Additional context
Add any other context about the problem here.

[emptyVoid]

Generally it's not a good idea to mix C++ code compiled by different compilers (even by different versions of the same compiler).

Instead you can create a custom triplet, e.g. x64-windows-v141.cmake:

set(VCPKG_TARGET_ARCHITECTURE x64)
set(VCPKG_CRT_LINKAGE dynamic)
set(VCPKG_LIBRARY_LINKAGE dynamic)
set(VCPKG_PLATFORM_TOOLSET v141)

Install necessary packages with this triplet, e.g. .\vcpkg.exe install assimp --triplet x64-windows-v141.

And integrate it into your build system.

[LilyWangL]

Thanks for posting this issue. Please reopen this issue if this is still a problem for you.