Unhardcode the CMAKE_CONFIGURATION_TYPES values

This removes duplicated code for per-config variable initialization by
providing a `cmake_initialize_per_config_variable(<PREFIX> <DOCSTRING>)`
function.

This function initializes a `<PREFIX>` cache variable from `<PREFIX>_INIT`
and unless the `CMAKE_NOT_USING_CONFIG_FLAGS` variable is defined, does
the same with `<PREFIX>_<CONFIG>` from `<PREFIX>_<CONFIG>_INIT` for every
`<CONFIG>` in `CMAKE_CONFIGURATION_TYPES` for multi-config generators or
`CMAKE_BUILD_TYPE` for single-config generators.

1 files changed, 4 insertions, 110 deletions

diff --git a/Modules/CMakeCommonLanguageInclude.cmake b/Modules/CMakeCommonLanguageInclude.cmake
index 43b5da0..b043e18 100644
--- a/Modules/CMakeCommonLanguageInclude.cmake
+++ b/Modules/CMakeCommonLanguageInclude.cmake
@@ -10,120 +10,14 @@ string(APPEND CMAKE_EXE_LINKER_FLAGS_INIT " $ENV{LDFLAGS}")
 string(APPEND CMAKE_SHARED_LINKER_FLAGS_INIT " $ENV{LDFLAGS}")
 string(APPEND CMAKE_MODULE_LINKER_FLAGS_INIT " $ENV{LDFLAGS}")
 
-foreach(t EXE SHARED MODULE STATIC)
-  foreach(c "" _DEBUG _RELEASE _MINSIZEREL _RELWITHDEBINFO)
-    string(STRIP "${CMAKE_${t}_LINKER_FLAGS${c}_INIT}" CMAKE_${t}_LINKER_FLAGS${c}_INIT)
-  endforeach()
-endforeach()
-
-if(NOT CMAKE_NOT_USING_CONFIG_FLAGS)
-  get_property(_GENERATOR_IS_MULTI_CONFIG GLOBAL PROPERTY GENERATOR_IS_MULTI_CONFIG)
-  # default build type is none
-  if(NOT _GENERATOR_IS_MULTI_CONFIG AND NOT CMAKE_NO_BUILD_TYPE)
-    set (CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE_INIT} CACHE STRING
-      "Choose the type of build, options are: None(CMAKE_CXX_FLAGS or CMAKE_C_FLAGS used) Debug Release RelWithDebInfo MinSizeRel.")
-  endif()
-  unset(_GENERATOR_IS_MULTI_CONFIG)
-
-  set (CMAKE_EXE_LINKER_FLAGS_DEBUG ${CMAKE_EXE_LINKER_FLAGS_DEBUG_INIT} CACHE STRING
-     "Flags used by the linker during debug builds.")
-
-  set (CMAKE_EXE_LINKER_FLAGS_MINSIZEREL ${CMAKE_EXE_LINKER_FLAGS_MINSIZEREL_INIT} CACHE STRING
-     "Flags used by the linker during release minsize builds.")
-
-  set (CMAKE_EXE_LINKER_FLAGS_RELEASE ${CMAKE_EXE_LINKER_FLAGS_RELEASE_INIT} CACHE STRING
-     "Flags used by the linker during release builds.")
-
-  set (CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO
-     ${CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO_INIT} CACHE STRING
-     "Flags used by the linker during Release with Debug Info builds.")
-
-  set (CMAKE_SHARED_LINKER_FLAGS_DEBUG ${CMAKE_SHARED_LINKER_FLAGS_DEBUG_INIT} CACHE STRING
-     "Flags used by the linker during debug builds.")
-
-  set (CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL ${CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL_INIT}
-     CACHE STRING
-     "Flags used by the linker during release minsize builds.")
-
-  set (CMAKE_SHARED_LINKER_FLAGS_RELEASE ${CMAKE_SHARED_LINKER_FLAGS_RELEASE_INIT} CACHE STRING
-     "Flags used by the linker during release builds.")
-
-  set (CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO
-     ${CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO_INIT} CACHE STRING
-     "Flags used by the linker during Release with Debug Info builds.")
-
-  set (CMAKE_MODULE_LINKER_FLAGS_DEBUG ${CMAKE_MODULE_LINKER_FLAGS_DEBUG_INIT} CACHE STRING
-     "Flags used by the linker during debug builds.")
-
-  set (CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL ${CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL_INIT}
-     CACHE STRING
-     "Flags used by the linker during release minsize builds.")
-
-  set (CMAKE_MODULE_LINKER_FLAGS_RELEASE ${CMAKE_MODULE_LINKER_FLAGS_RELEASE_INIT} CACHE STRING
-     "Flags used by the linker during release builds.")
-
-  set (CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO
-     ${CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO_INIT} CACHE STRING
-     "Flags used by the linker during Release with Debug Info builds.")
-
-  set (CMAKE_STATIC_LINKER_FLAGS_DEBUG ${CMAKE_STATIC_LINKER_FLAGS_DEBUG_INIT} CACHE STRING
-     "Flags used by the linker during debug builds.")
-
-  set (CMAKE_STATIC_LINKER_FLAGS_MINSIZEREL ${CMAKE_STATIC_LINKER_FLAGS_MINSIZEREL_INIT}
-     CACHE STRING
-     "Flags used by the linker during release minsize builds.")
-
-  set (CMAKE_STATIC_LINKER_FLAGS_RELEASE ${CMAKE_STATIC_LINKER_FLAGS_RELEASE_INIT} CACHE STRING
-     "Flags used by the linker during release builds.")
-
-  set (CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO
-     ${CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO_INIT} CACHE STRING
-     "Flags used by the linker during Release with Debug Info builds.")
-endif()
-
-# executable linker flags
-set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS_INIT}"
-     CACHE STRING "Flags used by the linker.")
-
-# shared linker flags
-set (CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS_INIT}"
-     CACHE STRING "Flags used by the linker during the creation of dll's.")
-
-# module linker flags
-set (CMAKE_MODULE_LINKER_FLAGS "${CMAKE_MODULE_LINKER_FLAGS_INIT}"
-     CACHE STRING "Flags used by the linker during the creation of modules.")
-
-# static linker flags
-set (CMAKE_STATIC_LINKER_FLAGS "${CMAKE_STATIC_LINKER_FLAGS_INIT}"
-     CACHE STRING "Flags used by the linker during the creation of static libraries.")
+cmake_initialize_per_config_variable(CMAKE_EXE_LINKER_FLAGS    "Flags used by the linker")
+cmake_initialize_per_config_variable(CMAKE_SHARED_LINKER_FLAGS "Flags used by the linker during the creation of shared libraries")
+cmake_initialize_per_config_variable(CMAKE_MODULE_LINKER_FLAGS "Flags used by the linker during the creation of modules")
+cmake_initialize_per_config_variable(CMAKE_STATIC_LINKER_FLAGS "Flags used by the linker during the creation of static libraries")
 
 # Alias the build tool variable for backward compatibility.
 set(CMAKE_BUILD_TOOL ${CMAKE_MAKE_PROGRAM})
 
 mark_as_advanced(
 CMAKE_VERBOSE_MAKEFILE
-
-CMAKE_EXE_LINKER_FLAGS
-CMAKE_EXE_LINKER_FLAGS_DEBUG
-CMAKE_EXE_LINKER_FLAGS_MINSIZEREL
-CMAKE_EXE_LINKER_FLAGS_RELEASE
-CMAKE_EXE_LINKER_FLAGS_RELWITHDEBINFO
-
-CMAKE_SHARED_LINKER_FLAGS
-CMAKE_SHARED_LINKER_FLAGS_DEBUG
-CMAKE_SHARED_LINKER_FLAGS_MINSIZEREL
-CMAKE_SHARED_LINKER_FLAGS_RELEASE
-CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO
-
-CMAKE_MODULE_LINKER_FLAGS
-CMAKE_MODULE_LINKER_FLAGS_DEBUG
-CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL
-CMAKE_MODULE_LINKER_FLAGS_RELEASE
-CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO
-
-CMAKE_STATIC_LINKER_FLAGS
-CMAKE_STATIC_LINKER_FLAGS_DEBUG
-CMAKE_STATIC_LINKER_FLAGS_MINSIZEREL
-CMAKE_STATIC_LINKER_FLAGS_RELEASE
-CMAKE_STATIC_LINKER_FLAGS_RELWITHDEBINFO
 )