Updating Xcode causes build to fail

[rahuliyers]

This has happened a few times. If I update Xcode, then something happens to the target when I open Xcode again. Instead of it being for iPhone, it becomes "My Mac", and I cannot build.

If I try to run the following command:

axmol build -p ios -a arm64 -sdk simulator -c -f

Then the build fails with errors:

CMake Error at /Users/rahul/Documents/Projects/axmol-2.4.0/tools/external/cmake/share/cmake-3.31/Modules/Platform/iOS-Initialize.cmake:4 (message):
  iphonesimulator18.4 is not an iOS SDK
Call Stack (most recent call first):
  /Users/rahul/Documents/Projects/axmol-2.4.0/tools/external/cmake/share/cmake-3.31/Modules/CMakeSystemSpecificInitialize.cmake:34 (include)
  CMakeLists.txt:30 (project)


CMake Error at CMakeLists.txt:30 (project):
  No CMAKE_C_COMPILER could be found.



CMake Error at CMakeLists.txt:30 (project):
  No CMAKE_CXX_COMPILER could be found.



-- Configuring incomplete, errors occurred!
build.ps1: /Users/rahul/Documents/Projects/axmol-2.4.0/tools/cmdline/axmol.ps1:91
Line |
  91 |          . $build_script @sub_args
     |          ~~~~~~~~~~~~~~~~~~~~~~~~~
     | Generate fail, ret=1

Any idea what the issue is? It happens regardless of project, and it seems I have to create a new project after this happens.

[thienphuoc]

Check Available SDKs on Your Machine

Run the following command in Terminal to see the list of available iOS SDKs:

xcodebuild -showsdks

You will see an output like:

iOS SDKs:
	iOS 17.4                       -sdk iphoneos17.4

iOS Simulator SDKs:
	iOS 17.4 Simulator            -sdk iphonesimulator17.4

If iphonesimulator18.4 is not listed, that's the reason for the error.

[thienphuoc]

Why don't you build and run it on a real device using axmol build -p ios -a arm64 -c?

[rahuliyers]

It says:

iOS SDKs:
iOS 18.5 -sdk iphoneos18.5

iOS Simulator SDKs:
Simulator - iOS 18.5 -sdk iphonesimulator18.5

In Xcode-> Components ->Other Installed Platforms, it lists iOS 18.4, iOS 18.3.1, iOS 17.4 and iOS 15.0.

It seems that every time I update Xcode, it installs the latest SDK, and removes the earlier ones. Perhaps in the axmol project settings it is hard coded to look for the sdk that was used when the project was created (in this case 18.4?), and that's why it doesn't work. But if I create a new project it works. That seems to explain why this happens every time I update Xcode. Seems like a bug in axmols template creation to me.

[rahuliyers]

It seems that when creating a project in Axmol, the CMakeCache.txt file hardcodes the sdk used. In my case 18.4. When I updated Xcode, Xcode removed the old sdk, and installed 18.5, so obviously it would not be able to build with the old paths.

I opened the file in text edit, and replaced all instances of 18.4 in the text with 18.5

Then I ran the command again to build and everything worked, both in the terminal and in Xcode.

[rh101]

It would be better to delete the CMakeCache.txt file, and re-run the axmol build -p ios -a arm64 -sdk simulator -c -f command, rather than editing it. You could also delete the entire build folder and recreate it with the same command.

The same thing happens with Visual Studio updates that also update the compiler version, and deleting CMakeCache.txt is a way to resolve the issue.

[rahuliyers]

Thank you for explaining. I will do that next time.