Replace some SM cmake macros with builtin functions

CMake/CMakeMacros.cmake

@@ -1,10 +1,3 @@
-# Borrowed from http://stackoverflow.com/a/3323227/445373
-function(sm_list_replace container index newvalue)
-  list(INSERT ${container} ${index} ${newvalue})
-  math(EXPR __INDEX "${index} + 1")
-  list(REMOVE_AT ${container} ${__INDEX})
-endfunction()
-
 function(sm_append_simple_target_property target property str)
   get_target_property(current_property ${target} ${property})
   if(current_property)
@@ -16,31 +9,6 @@ function(sm_append_simple_target_property target property str)
   endif()
 endfunction()
 
-# Borrowed from http://stackoverflow.com/a/7172941/445373 TODO: Upgrade to cmake
-# 3.x so that this function is not needed.
-function(sm_join values glue output)
-  string(REPLACE ";"
-                 "${glue}"
-                 _TMP_STR
-                 "${values}")
-  set(${output} "${_TMP_STR}" PARENT_SCOPE)
-endfunction()
-
-function(sm_add_compile_definition target def)
-  sm_append_simple_target_property(${target} COMPILE_DEFINITIONS ${def})
-endfunction()
-
-function(sm_add_compile_flag target flag)
-  get_target_property(current_property ${target} COMPILE_FLAGS)
-  if(current_property)
-    set(current_property "${current_property} ${flag}")
-    set_target_properties(${target}
-                          PROPERTIES COMPILE_FLAGS "${current_property}")
-  else()
-    set_target_properties(${target} PROPERTIES COMPILE_FLAGS ${flag})
-  endif()
-endfunction()
-
 function(sm_add_link_flag target flag)
   if(MSVC)
     # Use a modified form of sm_append_simple_target_property.
@@ -59,13 +27,11 @@ endfunction()
 function(disable_project_warnings projectName)
   if(NOT WITH_EXTERNAL_WARNINGS)
     if(MSVC)
-      sm_add_compile_flag(${projectName} "/W0")
+      target_compile_options(${projectName} PRIVATE "/W0")
     elseif(APPLE)
-      set_target_properties(
-        ${projectName}
-        PROPERTIES XCODE_ATTRIBUTE_GCC_WARN_INHIBIT_ALL_WARNINGS "YES")
+      set_property(TARGET ${projectName} PROPERTY XCODE_ATTRIBUTE_GCC_WARN_INHIBIT_ALL_WARNINGS "YES")
     else()
-      set_target_properties(${projectName} PROPERTIES COMPILE_FLAGS "-w")
+      target_compile_options(${projectName} PRIVATE "-w")
     endif()
   endif()
 endfunction()

CMake/SetupFfmpeg.cmake

@@ -10,7 +10,7 @@ set(SM_FFMPEG_SRC_LIST
     "${SM_EXTERN_DIR}"
     "/ffmpeg-linux-"
     "${SM_FFMPEG_VERSION}")
-sm_join("${SM_FFMPEG_SRC_LIST}" "" SM_FFMPEG_SRC_DIR)
+list(JOIN SM_FFMPEG_SRC_LIST "" SM_FFMPEG_SRC_DIR)
 set(SM_FFMPEG_CONFIGURE_EXE "${SM_FFMPEG_SRC_DIR}/configure")
 if(MINGW)
   # Borrow from http://stackoverflow.com/q/11845823 string(SUBSTRING