cmake4 compat :

* up cmake_minimum_required to 3.10
* delete CMP0042 because OLD behavior is removed in cmake-4 and
is no longer used.
* set ENABLE_EXPORTS for test_runner (OLD behavior for CMP0065 is removed
in cmake4)

Signed-off-by: Nicolas PARLANT <nicolas.parlant@parhuet.fr>

CMakeLists.txt

@@ -1,6 +1,6 @@
-# Please ensure that any changes remain compliant with 3.1.
+# Please ensure that any changes remain compliant with 3.10.
 if(NOT EMBED_OPENBABEL)
-  cmake_minimum_required(VERSION 3.1)
+  cmake_minimum_required(VERSION 3.10)
 endif()
 
 project(openbabel)
@@ -10,9 +10,6 @@ set (CMAKE_CXX_STANDARD 11)
 
 if(COMMAND cmake_policy)
   cmake_policy(SET CMP0003 NEW)
-  if(POLICY CMP0042)
-    cmake_policy(SET CMP0042 OLD)
-  endif()
 endif()
 
 include (CheckCXXCompilerFlag)

doc/examples/static_executable/CMakeLists.txt

@@ -25,7 +25,7 @@
 #
 
 # This line is required for cmake backwards compatibility.
-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 3.10)
 
 # Name of your project
 project(myproject)

scripts/CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 2.6.0)
+cmake_minimum_required(VERSION 3.10.0)
 # Library versioning (used in Mac Python bindings)x
 set(SOVERSION 4)
 

test/CMakeLists.txt

@@ -152,6 +152,7 @@ endif()
 
 add_executable(test_runner ${srclist} obtest.cpp)
 target_link_libraries(test_runner ${libs})
+set_target_properties(test_runner PROPERTIES ENABLE_EXPORTS TRUE)
 
 if(NOT BUILD_SHARED AND NOT BUILD_MIXED)
   set_target_properties(test_runner PROPERTIES LINK_SEARCH_END_STATIC TRUE)