What is the issue you have?

Start 58: cmake_import_configure
58/67 Test #58: cmake_import_configure .......................***Failed    2.07 sec
...
-- Found nlohmann_json: build/json/nlohmann_jsonConfig.cmake (found version "3.10.0")
CMake Error at build/json/nlohmann_jsonConfig.cmake:6 (include):
  include could not find requested file:

    build/json/nlohmann_jsonTargets.cmake
Call Stack (most recent call first):
  CMakeLists.txt:5 (find_package)

This is because in CMakeLists.txt export ... NLOHMANN_JSON_CMAKE_PROJECT_TARGETS_FILE is called only in case of JSON_Install is true.

Please describe the steps to reproduce the issue.

1. cmake .. -D JSON_Install:BOOL=OFF -D JSON_ImplicitConversions:BOOL=OFF -D JSON_BuildTests:BOOL=ON
2. cmake --build . --config Release
3. ctest -C Release --output-on-failure

What is the expected behavior?

Tests should not fail when using flags -D JSON_Install:BOOL=OFF -D JSON_ImplicitConversions:BOOL=OFF -D JSON_BuildTests:BOOL=ON

And what is the actual behavior instead?

Some tests fail.

Which compiler and operating system are you using?

• Compiler: Visual Studio 2019 16.11.1 Professional
• Operating system: Windows 10 21H1

Which version of the library did you use?

• latest release version 3.10.0 (zip file)
• other release - please state the version: ___
• the develop branch

If you experience a compilation error: can you compile and run the unit tests?

• yes
• no - please copy/paste the error message below