Embarcadero,OpenWatcom: Clear unused flags for creating shared libraries Clear `CMAKE_SHARED_LIBRARY_CREATE_<LANG>_FLAGS` since no special link flags are needed to create a DLL with these toolchains. Our shared library creation rules do not reference the placeholder, so this variable was never used. However, we may soon teach the generators to look it up directly.

diff --git a/Modules/Compiler/OpenWatcom.cmake b/Modules/Compiler/OpenWatcom.cmake
index e048bc8..987dff9 100644
--- a/Modules/Compiler/OpenWatcom.cmake
+++ b/Modules/Compiler/OpenWatcom.cmake

@@ -75,12 +75,16 @@
   "<CMAKE_LINKER> ${CMAKE_WLINK_QUIET} name <TARGET> <LINK_FLAGS> option implib=<TARGET_IMPLIB> file {<OBJECTS>} <LINK_LIBRARIES>")
 # C++ create a shared library
 set(CMAKE_CXX_CREATE_SHARED_LIBRARY ${CMAKE_C_CREATE_SHARED_LIBRARY})
+set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS "")
+set(CMAKE_SHARED_LIBRARY_CREATE_CXX_FLAGS "")
 
 # C create a shared module
 set(CMAKE_C_CREATE_SHARED_MODULE
   "<CMAKE_LINKER> ${CMAKE_WLINK_QUIET} name <TARGET> <LINK_FLAGS> file {<OBJECTS>} <LINK_LIBRARIES>")
 # C++ create a shared module
 set(CMAKE_CXX_CREATE_SHARED_MODULE ${CMAKE_C_CREATE_SHARED_MODULE})
+set(CMAKE_SHARED_MODULE_CREATE_C_FLAGS "")
+set(CMAKE_SHARED_MODULE_CREATE_CXX_FLAGS "")
 
 # C create a static library
 set(CMAKE_C_CREATE_STATIC_LIBRARY

diff --git a/Modules/Platform/Windows-Embarcadero.cmake b/Modules/Platform/Windows-Embarcadero.cmake
index ad5bb1c..568b995 100644
--- a/Modules/Platform/Windows-Embarcadero.cmake
+++ b/Modules/Platform/Windows-Embarcadero.cmake

@@ -74,6 +74,8 @@
 macro(__embarcadero_language lang)
   set(CMAKE_${lang}_COMPILE_OPTIONS_DLL "${_tD}") # Note: This variable is a ';' separated list
   set(CMAKE_SHARED_LIBRARY_${lang}_FLAGS "${_tD}") # ... while this is a space separated string.
+  set(CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS "")
+  set(CMAKE_SHARED_MODULE_CREATE_${lang}_FLAGS "")
   set(CMAKE_${lang}_USE_RESPONSE_FILE_FOR_INCLUDES 1)
 
   set (CMAKE_${lang}_LINKER_WRAPPER_FLAG "-l")