How can I turn off or change the optimization setting for a particular function in cmake?

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CMake provides several ways to turn off or change the optimization setting for a particular function:

1. Using the set_property function: The set_property function can be used to set the COMPILE_OPTIONS property for a particular target or source file. For example, to turn off optimization for a specific source file, you can use the following command:

set_property(SOURCE <source_file> PROPERTY COMPILE_OPTIONS "-O0")

This will set the -O0 option for the specified source file.

1. Using the targetcompileoptions function: The target_compile_options function can be used to set compile options for a particular target. For example, to turn off optimization for a specific target, you can use the following command:

target_compile_options(<target_name> PRIVATE "-O0")

This will set the -O0 option for the specified target.

1. Using the cmakeminimumrequired function: You can use the cmake_minimum_required function to set the minimum CMake version required for your project. By setting the minimum required version to a lower value, you can disable certain optimizations that are turned on by default in newer versions. For example, to disable -O2 optimization, you can use:

cmake_minimum_required(VERSION 3.0)

This will set the minimum required CMake version to 3.0, which does not enable the -O2 optimization by default.