Better support for older cmake versions

ffc8f9dc · Maarten L. Hekkelman · 288b2bb7 · ffc8f9dc
Commit ffc8f9dc authored Oct 17, 2023 by Maarten L. Hekkelman
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Showing with 6 additions and 2 deletions

CMakeLists.txt
+6 -2

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--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -61,8 +61,12 @@ set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
 option(BUILD_FOR_CCP4 "Build a version to be installed in CCP4" OFF)
 # Building shared libraries?
-cmake_policy(SET CMP0127 NEW)
+if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.22)
-cmake_dependent_option(BUILD_SHARED_LIBS "Build a shared library instead of a static one" OFF "NOT (BUILD_FOR_CCP4 AND WIN32)" ON)
+	cmake_policy(SET CMP0127 NEW)
+	cmake_dependent_option(BUILD_SHARED_LIBS "Build a shared library instead of a static one" OFF "NOT (BUILD_FOR_CCP4 AND WIN32)" ON)
+else()
+	cmake_dependent_option(BUILD_SHARED_LIBS "Build a shared library instead of a static one" OFF)
+endif()
 # Lots of code depend on the availability of the components.cif file
 option(CIFPP_DOWNLOAD_CCD "Download the CCD file components.cif during installation" ON)