tree 37861b10ee4fbd3a0cf2296416f204491a0827c7
parent f2002f60222701ff74adb182cbff062fb1dd1b10
author Arfrever <Arfrever.FTA@GMail.Com> 1646701430 +0100
committer GitHub <noreply@github.com> 1646701430 -0800
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CMake fixes (#9595)

* Support older versions of CMake.

VERSION_GREATER_EQUAL is supported by CMake >=3.7:
https://cmake.org/cmake/help/latest/command/if.html#version-greater-equal

target_link_options() is supported by CMake >=3.13:
https://cmake.org/cmake/help/latest/command/target_link_options.html

* Use PROTOBUF_USE_DLLS and LIBPROTOC_EXPORTS for libprotoc.so shared library

Similar change for libprotobuf.so and libprotobuf-lite.so was made
in commit 5a0887fc6529596eff5c0f72febc602a9d494cc2.

* Make value of PROTOC_EXPORT dependent on LIBPROTOC_EXPORTS instead of LIBPROTOBUF_EXPORTS

This was probably intention, and LIBPROTOC_EXPORTS is also used above
in _MSC_VER branch.