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cmake: update timestamp status

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- avoid unnecessary rebuilding of OpenCV libraries
- use timestamp of the first launch of CMake
- to return to previous behavior use `-UOPENCV_TIMESTAMP` CMake option

original commit: 3e45795232
This commit is contained in:
Alexander Alekhin 2017-12-13 15:16:03 +03:00
parent 00cc4aa230
commit 7459388dd9
1 changed files with 10 additions and 0 deletions
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10
CMakeLists.txt
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@ -683,6 +683,16 @@ endif()
# ========================== build platform ==========================
status("")
status(" Platform:")
if(NOT DEFINED OPENCV_TIMESTAMP
AND NOT CMAKE_VERSION VERSION_LESS 2.8.11
AND NOT BUILD_INFO_SKIP_TIMESTAMP
)
string(TIMESTAMP OPENCV_TIMESTAMP "" UTC)
set(OPENCV_TIMESTAMP "${OPENCV_TIMESTAMP}" CACHE STRING "Timestamp of OpenCV build configuration" FORCE)
endif()
if(OPENCV_TIMESTAMP)
status(" Timestamp:" ${OPENCV_TIMESTAMP})
endif()
status(" Host:" ${CMAKE_HOST_SYSTEM_NAME} ${CMAKE_HOST_SYSTEM_VERSION} ${CMAKE_HOST_SYSTEM_PROCESSOR})
if(CMAKE_CROSSCOMPILING)
status(" Target:" ${CMAKE_SYSTEM_NAME} ${CMAKE_SYSTEM_VERSION} ${CMAKE_SYSTEM_PROCESSOR})