Ignored. See CMake Policy CMP0043.
Per-configuration preprocessor definitions on a target.
This is the configuration-specific version of COMPILE_DEFINITIONS where <CONFIG> is an upper-case name (ex. COMPILE_DEFINITIONS_DEBUG).
Contents of COMPILE_DEFINITIONS_<CONFIG> may use “generator expressions” with the syntax $<...>. See the cmake-generator-expressions(7) manual for available expressions. See the cmake-buildsystem(7) manual for more on defining buildsystem properties.
Generator expressions should be preferred instead of setting this property.
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Licensed under the BSD 3-clause License.
https://cmake.org/cmake/help/v3.19/prop_tgt/COMPILE_DEFINITIONS_CONFIG.html