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Q&A cmake looking for files from a previous SDK

The only cache files CMake generates are in the specified build directory, so if you've wiped that out and/or built from a clean checkout, cache files from an old build cannot be the issue (by the ...

posted 12mo ago by InfiniteDissent‭

Answer
#1: Initial revision by user avatar InfiniteDissent‭ · 2025-09-26T12:34:40Z (12 months ago)
The only cache files CMake generates are in the specified `build` directory, so if you've wiped that out and/or built from a clean checkout, cache files from an old build cannot be the issue (by the way, you don't need three lines to initialise the build directory: a simple `cmake -S . -B build` in the source directory will do it in one step).

A quick grep of the source code does not indicate any obviously hard-coded SDK versions or paths (which are possible in CMake, using e.g. the [CMAKE_OSX_SYSROOT](https://cmake.org/cmake/help/latest/variable/CMAKE_OSX_SYSROOT.html) variable), so my guess is that the SDK requirement is coming from a dependency.

The INSTALL file mentions that Qt is a required build dependency, and the CMake script is using `find_package(Qt ...)` to locate it, without using any local path overrides. Therefore I would assume that you need a system-wide installation of Qt in order to build this software. Is it possible that the particular version of Qt you have installed on your Mac needs to be upgraded to a later point release in order to support the latest XCode and its SDK?