Index: runtime/src/z_Linux_asm.s
===================================================================
--- runtime/src/z_Linux_asm.s
+++ runtime/src/z_Linux_asm.s
@@ -109,8 +109,28 @@
 # endif // KMP_OS_DARWIN
 #endif // KMP_ARCH_X86 || KMP_ARCH_x86_64
 
-#if KMP_OS_LINUX && KMP_ARCH_AARCH64
+#if KMP_ARCH_AARCH64
 
+# if KMP_OS_DARWIN
+#  define KMP_PREFIX_UNDERSCORE(x) _##x  // extra underscore for OS X* symbols
+#  define KMP_LABEL(x) L_##x             // form the name of label
+
+.macro ALIGN
+	.align $0
+.endmacro
+
+.macro DEBUG_INFO
+/* Not sure what .size does in icc, not sure if we need to do something
+   similar for OS X*.
+*/
+.endmacro
+
+.macro PROC
+	ALIGN  4
+	.globl KMP_PREFIX_UNDERSCORE($0)
+KMP_PREFIX_UNDERSCORE($0):
+.endmacro
+# else // KMP_OS_DARWIN
 #  define KMP_PREFIX_UNDERSCORE(x) x  // no extra underscore for Linux* OS symbols
 // Format labels so that they don't override function names in gdb's backtraces
 #  define KMP_LABEL(x) .L_##x         // local label hidden from backtraces
@@ -133,8 +153,9 @@
 KMP_PREFIX_UNDERSCORE(\proc):
 	.cfi_startproc
 .endm
+# endif // KMP_OS_DARWIN
 
-#endif // KMP_OS_LINUX && KMP_ARCH_AARCH64
+#endif // KMP_ARCH_AARCH64
 
 // -----------------------------------------------------------------------
 // data
@@ -1441,7 +1462,7 @@
 #endif /* KMP_ARCH_X86_64 */
 
 // '
-#if KMP_OS_LINUX && KMP_ARCH_AARCH64
+#if KMP_ARCH_AARCH64
 
 //------------------------------------------------------------------------
 //
@@ -1553,7 +1574,7 @@
 	DEBUG_INFO __kmp_invoke_microtask
 // -- End  __kmp_invoke_microtask
 
-#endif /* KMP_OS_LINUX && KMP_ARCH_AARCH64 */
+#endif /* KMP_ARCH_AARCH64 */
 
 #if KMP_ARCH_PPC64
 
Index: runtime/src/z_Linux_util.cpp
===================================================================
--- runtime/src/z_Linux_util.cpp
+++ runtime/src/z_Linux_util.cpp
@@ -2516,7 +2516,7 @@
 
 #endif // USE_LOAD_BALANCE
 
-#if !(KMP_ARCH_X86 || KMP_ARCH_X86_64 || KMP_MIC || (KMP_OS_LINUX && KMP_ARCH_AARCH64) || KMP_ARCH_PPC64)
+#if !(KMP_ARCH_X86 || KMP_ARCH_X86_64 || KMP_MIC || KMP_ARCH_AARCH64 || KMP_ARCH_PPC64)
 
 // we really only need the case with 1 argument, because CLANG always build
 // a struct of pointers to shared variables referenced in the outlined function