Native DLLs: only load imported DLLs from System32 (#112359)

Author: AustinWise

eng/native/configurecompiler.cmake

@@ -70,6 +70,9 @@ if (MSVC)
   add_compile_options($<$<COMPILE_LANGUAGE:CXX>:$<TARGET_PROPERTY:CLR_EH_OPTION>>)
   add_link_options($<$<BOOL:$<TARGET_PROPERTY:CLR_CONTROL_FLOW_GUARD>>:/guard:cf>)
 
+  # Load all imported DLLs from the System32 directory.
+  add_linker_flag(/DEPENDENTLOADFLAG:0x800)
+
   # Linker flags
   #
   set (WINDOWS_SUBSYSTEM_VERSION 6.01)

eng/native/ijw/IJW.cmake

@@ -64,6 +64,10 @@ if (CLR_CMAKE_HOST_WIN32)
   remove_ijw_incompatible_options("${dirCompileOptions}" dirCompileOptions)
   set_directory_properties(PROPERTIES COMPILE_OPTIONS "${dirCompileOptions}")
 
+  # IJW tests needs to load DLLs from somewhere other than System32
+  string(REPLACE "/DEPENDENTLOADFLAG:0x800" "" CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}")
+  string(REPLACE "/DEPENDENTLOADFLAG:0x800" "" CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS}")
+
   set(CLR_SDK_REF_PACK_OUTPUT "")
   set(CLR_SDK_REF_PACK_DISCOVERY_ERROR "")
   set(CLR_SDK_REF_PACK_DISCOVERY_RESULT 0)