COMP: inform users about sse checks

CMake/OTBCheckSSEFeatures.cmake

@@ -6,6 +6,12 @@ function(check_sse_features sse_flags )
 
   set(has_sse FALSE)
   set(${sse_flags} "0" PARENT_SCOPE)
+  # For apple assume sse2 is on for all intel builds, check for 64 and 32 bit versions
+  if(APPLE)
+      message(STATUS "For apple assume sse2 is on for all intel builds")
+    return()
+  endif()
+
   if( CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX )
     set(CMAKE_REQUIRED_FLAGS "-msse2")
     check_cxx_source_runs("

CMake/OTBSetStandardCompilerFlags.cmake

@@ -289,13 +289,10 @@ macro(check_compiler_platform_flags)
  if(OTB_USE_SSE_FLAGS)
     include(OTBCheckSSEFeatures)
     check_sse_features(OTB_SSE_FLAGS)
-  endif()
-
-  if(OTB_SSE_FLAGS)
-    message(STATUS "Using SSE2 extensions")
-    set(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} ${OTB_SSE_FLAGS}")
-  else()
-    message(STATUS "Not using SSE2 extensions")
+    if(OTB_SSE_FLAGS)
+      message(STATUS "Adding OTB_SSE_FLAGS(${OTB_SSE_FLAGS}) to OTB_REQUIRED_CXX_FLAGS")
+      set(OTB_REQUIRED_CXX_FLAGS "${OTB_REQUIRED_CXX_FLAGS} ${OTB_SSE_FLAGS}")
+    endif()
   endif()
 
   #-----------------------------------------------------------------------------
@@ -304,6 +301,7 @@ macro(check_compiler_platform_flags)
   # will be produced.  This is first documented in the gcc4 man page.
   if(CMAKE_COMPILER_IS_GNUCXX)
     set(ALL_FLAGS "${CMAKE_C_FLAGS} ${CMAKE_CXX_FLAGS} ${CMAKE_EXE_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}" )
+    #TODO: list(REMOVE_DUPLICATES ALL_FLAGS)
     separate_arguments(ALL_FLAGS)
     foreach(COMP_OPTION ${ALL_FLAGS})
       if("${COMP_OPTION}" STREQUAL "-frename-registers")