imported libname for stdc++fs

CMakeLists.txt

@@ -48,9 +48,6 @@ find_package(Filesystem REQUIRED)
 
 if("${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU")
 	# https://stackoverflow.com/questions/63902528/program-crashes-when-filesystempath-is-destroyed
-	if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS_EQUAL 8.4.0)
-		message(WARNING "Your gnu compiler is perhaps too old, please use a more recent one if you get a segmentation in the build process when running symop-map-generator")
-	endif()
 	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-unused-parameter -Wno-missing-field-initializers")
 endif()
 if(MSVC)

cmake/FindFilesystem.cmake

@@ -56,11 +56,11 @@ if(_found)
 	set_property(TARGET std::filesystem APPEND PROPERTY INTERFACE_COMPILE_FEATURES cxx_std_17)
 
 	if(CXX_FILESYSTEM_NO_LINK_NEEDED)
-	# Nothing to add...
+		# Nothing to add...
 	elseif(CXX_FILESYSTEM_STDCPPFS_NEEDED)
-		set_property(TARGET std::filesystem APPEND PROPERTY INTERFACE_LINK_LIBRARIES -lstdc++fs)
+		set_target_properties(std::filesystem PROPERTIES IMPORTED_LIBNAME stdc++fs)
 	elseif(CXX_FILESYSTEM_CPPFS_NEEDED)
-		set_property(TARGET std::filesystem APPEND PROPERTY INTERFACE_LINK_LIBRARIES -lc++fs)
+		set_target_properties(std::filesystem PROPERTIES IMPORTED_LIBNAME c++fs)
 	endif()
 endif()
 
@@ -71,3 +71,4 @@ set(Filesystem_FOUND ${_found} CACHE BOOL "TRUE if we can run a program using st
 if(Filesystem_FIND_REQUIRED AND NOT Filesystem_FOUND)
     message(FATAL_ERROR "Cannot run simple program using std::filesystem")
 endif()
+