List TARGET_OBJECTS in SOURCES target property.
Configure-time CMake code is not able to handle generator expressions. If using the
SOURCES target property at configure time, it may be necessary to first remove generator expressions using the
string(GENEX_STRIP) command. Generate-time CMake code such as
file(GENERATE) can handle the content without stripping.
OLD behavior for this policy is to omit
TARGET_OBJECTS expressions from the
SOURCES target property. The
NEW behavior for this policy is to include
TARGET_OBJECTS expressions in the output.
This policy was introduced in CMake version 3.1. CMake version 3.15.2 warns when the policy is not set and uses
OLD behavior. Use the
cmake_policy() command to set it to
OLD behavior of a policy is
deprecated by definition and may be removed in a future version of CMake.
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