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Enable cmake CMP0077 policy

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When building OpenCV as a sub-project using cmake's add_subdirectory()
the OpenCV's build options would be overwritten to its default
state. With cmake 3.13+ the CMP0077 policy, option() honors previous
definitions via set().
This commit is contained in:
Augusto Fraga Giachero 2020-01-07 08:36:35 -03:00
parent 8b43861217
commit 2d778434f1
1 changed files with 3 additions and 0 deletions
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3
CMakeLists.txt
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@ -68,6 +68,9 @@ if(POLICY CMP0075)
cmake_policy(SET CMP0075 NEW) # CMake 3.12+: Include file check macros honor `CMAKE_REQUIRED_LIBRARIES`
endif()
if(POLICY CMP0077)
cmake_policy(SET CMP0077 NEW) # CMake 3.13+: option() honors normal variables.
endif()
#
# Configure OpenCV CMake hooks