Add support for macOS

* Add 'macos' as an additional OS build option
* Guard unsupported paths like thread scheduling control and hwcaps
checking with the __APPLE__ macro
* Map linker options to respective Mach-O linker options

Change-Id: I67bd9fa3c20831427b218ca7d3b4b9d454ab4fec
Signed-off-by: Georgios Pinitas <georgios.pinitas@arm.com>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/4788
Reviewed-by: Sang-Hoon Park <sang-hoon.park@arm.com>
Reviewed-by: Giorgio Arena <giorgio.arena@arm.com>
Comments-Addressed: Arm Jenkins <bsgcomp@arm.com>
Tested-by: Arm Jenkins <bsgcomp@arm.com>
diff --git a/tests/framework/instruments/Instruments.h b/tests/framework/instruments/Instruments.h
index 135810c..8a6cec0 100644
--- a/tests/framework/instruments/Instruments.h
+++ b/tests/framework/instruments/Instruments.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 Arm Limited.
+ * Copyright (c) 2017-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -24,12 +24,12 @@
 #ifndef ARM_COMPUTE_TEST_INSTRUMENTS
 #define ARM_COMPUTE_TEST_INSTRUMENTS
 
-#if !defined(BARE_METAL)
+#if !defined(BARE_METAL) && !defined(__APPLE__)
 #include "MaliCounter.h"
 #include "OpenCLMemoryUsage.h"
 #include "OpenCLTimer.h"
 #include "PMUCounter.h"
-#endif /* !defined(BARE_METAL) */
+#endif /* !defined(BARE_METAL) && !defined(__APPLE__) */
 #include "SchedulerTimer.h"
 #include "WallClockTimer.h"