correct linker language logic for null pointer

Author: scivision

cmake/compilers.cmake

@@ -2,13 +2,15 @@ include(CheckIncludeFile)
 include(CheckSymbolExists)
 include(CheckIncludeFileCXX)
 
-if(CMAKE_VERSION VERSION_GREATER_EQUAL 3.24 AND CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_GENERATOR STREQUAL "Unix Makefiles")
+if(CMAKE_CXX_COMPILER_ID STREQUAL "AppleClang" AND CMAKE_GENERATOR STREQUAL "Unix Makefiles")
   # otherwise failed to link since -lc++ is missing
   set(linker_lang CXX)
+  message(VERBOSE "Setting linker language to CXX for certain targets")
 elseif(NOT CMAKE_GENERATOR MATCHES "Visual Studio")
   # IntelLLVM|NVHPC need Fortran.
   # For other compilers (except as above) don't need it set, but Fortran doesn't hurt.
   set(linker_lang Fortran)
+  message(VERBOSE "Setting linker language to Fortran for certain targets")
 endif()
 
 # --- abi check: C++ and Fortran compiler ABI compatibility

test/pointer/CMakeLists.txt

@@ -26,6 +26,5 @@ add_test(NAME Fortran_C++_null COMMAND fortran_cxx_null)
 # for Visual Studio generator object library
 add_library(c_null OBJECT ${PROJECT_SOURCE_DIR}/src/pointer/null.c)
 add_executable(fortran_c_null null_c.f90 $<TARGET_OBJECTS:c_null>)
+set_property(TARGET fortran_c_null PROPERTY LINKER_LANGUAGE Fortran)
 add_test(NAME Fortran_C_null COMMAND fortran_c_null)
-
-set_property(TARGET fortran_c_null fortran_cxx_null PROPERTY LINKER_LANGUAGE Fortran)