Only emit section directives on ELF platforms.

CMakeLists.txt

@@ -277,11 +277,6 @@ if (LIBDISPATCH)
 	target_link_libraries(objc ${LIBDISPATCH})
 endif ()
 
-# Enable .type and .section assembly directives on platforms other than OS X
-if (NOT APPLE)
-	add_definitions(-DHAS_SECTION_DIRECTIVE=1)
-endif ()
-
 # Make weak symbols work on OS X
 if (APPLE)
 	set(CMAKE_SHARED_LIBRARY_CREATE_C_FLAGS

block_trampolines.S

@@ -109,6 +109,6 @@ CDECL(__objc_block_trampoline_end):
 CDECL(__objc_block_trampoline_sret):
 CDECL(__objc_block_trampoline_end_sret):
 #endif
-#if HAS_SECTION_DIRECTIVE
+#ifdef __ELF__
 .section .note.GNU-stack,"",%progbits
 #endif

objc_msgSend.S

@@ -10,6 +10,6 @@
 #else
 #warning objc_msgSend() not implemented for your architecture
 #endif
-#if HAS_SECTION_DIRECTIVE
+#ifdef __ELF__
 .section .note.GNU-stack,"",%progbits
 #endif