CMAKE_CROSSCOMPILING_EMULATOR

Added in version 3.3.

This variable is only used when CMAKE_CROSSCOMPILING is on. It should point to a command on the host system that can run executable built for the target system.

Added in version 3.15: If this variable contains a semicolon-separated list, then the first value is the command and remaining values are its arguments.

Added in version 3.28: This variable can be initialized via an CMAKE_CROSSCOMPILING_EMULATOR environment variable.

The command will be used to run try_run() generated executables, which avoids manual population of the TryRunResults.cmake file.

This variable is also used as the default value for the CROSSCOMPILING_EMULATOR target property of executables. However, while generator expressions are supported by the target property (since CMake 3.29), they are not supported by this variable's try_run() functionality.

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https://cmake.org/cmake/help/latest/variable/CMAKE_CROSSCOMPILING_EMULATOR.html