windows_find_library fails to find gdk and gdkmm

[amnonjw]

Hi,
I'm building vcpkg and cadabra on Windows 10.
The commands written in the instructions for Windows first build vcpkg, but when I run the command to build cadabra
cmake -DCMAKE_TOOLCHAIN_FILE=C:/Users/... -CMAKE_BUILD_TYPE=RelWithDebInfo ...

(I also added the flag -DCMAKE_INCLUDE_PATH
but I use Enterprise\VC\Redist\MSVC\14.29.30036)

it fails with the errors below

CMake Error at cmake/windows.cmake:194 (message):
Could NOT find library gdk required for GTKMM3_LIBRARIES
Call Stack (most recent call first):
cmake/modules/FindGTKMM3.cmake:3 (windows_find_library)
C:/Users/amnonjw/source/repos/vcpkg/scripts/buildsystems/vcpkg.cmake:772 (_find_package)
frontend/CMakeLists.txt:24 (find_package)

CMake Error at cmake/windows.cmake:194 (message):
Could NOT find library gdkmm required for GTKMM3_LIBRARIES
Call Stack (most recent call first):
cmake/modules/FindGTKMM3.cmake:3 (windows_find_library)
C:/Users/amnonjw/source/repos/vcpkg/scripts/buildsystems/vcpkg.cmake:772 (_find_package)
frontend/CMakeLists.txt:24 (find_package)

[kpeeters]

Are you sure you installed all the required vcpkg packages? Let me know if this is still a problem.

[dg0yt]

Note microsoft/vcpkg#35627.

[kpeeters]

As it seems unlikely that vcpkg will have gtkmm-3.0 packages and I lack the resources to make them myself, the recommended route to build Cadabra on windows is now to use MSYS2. This is also what I use to generate the Windows installer for every release (and because that happens automatically, it will be monitored for build issues). I will close this issue, but feel free to re-open if there is any new development around gtkmm-3.0 vcpkg.

Eventually Cadabra will move to gtkmm-4 and this problem will go away by itself, but I have no estimate of time frame for this.