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>

3 files changed, 19 insertions, 18 deletions

diff --git a/src/core/CPP/CPPTypes.cpp b/src/core/CPP/CPPTypes.cpp
index 55119d80a8..139e106ca6 100644
--- a/src/core/CPP/CPPTypes.cpp
+++ b/src/core/CPP/CPPTypes.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018 Arm Limited.
+ * Copyright (c) 2018-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -26,7 +26,7 @@
 
 #include "arm_compute/core/Error.h"
 
-#ifndef BARE_METAL
+#if !defined(BARE_METAL)
 #include <sched.h>
 #endif /* defined(BARE_METAL) */
 
@@ -110,9 +110,9 @@ CPUInfo::CPUInfo()
 
 CPUModel CPUInfo::get_cpu_model() const
 {
-#if defined(BARE_METAL) || (!defined(__arm__) && !defined(__aarch64__))
+#if defined(BARE_METAL) || defined(__APPLE__) || (!defined(__arm__) && !defined(__aarch64__))
     return get_cpu_model(0);
-#else  /* defined(BARE_METAL) || (!defined(__arm__) && !defined(__aarch64__)) */
+#else  /* defined(BARE_METAL) || defined(__APPLE__) || (!defined(__arm__) && !defined(__aarch64__)) */
     return get_cpu_model(sched_getcpu());
-#endif /* defined(BARE_METAL) || (!defined(__arm__) && !defined(__aarch64__)) */
+#endif /* defined(BARE_METAL) || defined(__APPLE__) || (!defined(__arm__) && !defined(__aarch64__)) */
 }
diff --git a/src/runtime/CPP/CPPScheduler.cpp b/src/runtime/CPP/CPPScheduler.cpp
index 663cde7a21..e084cc6494 100644
--- a/src/runtime/CPP/CPPScheduler.cpp
+++ b/src/runtime/CPP/CPPScheduler.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020 Arm Limited.
+ * Copyright (c) 2016-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -98,11 +98,12 @@ void set_thread_affinity(int core_id)
         return;
     }
 
+#if !defined(__APPLE__)
     cpu_set_t set;
     CPU_ZERO(&set);
     CPU_SET(core_id, &set);
-    ARM_COMPUTE_EXIT_ON_MSG(sched_setaffinity(0, sizeof(set), &set),
-                            "Error setting thread affinity");
+    ARM_COMPUTE_EXIT_ON_MSG(sched_setaffinity(0, sizeof(set), &set), "Error setting thread affinity");
+#endif /* !defined(__APPLE__) */
 }
 
 class Thread final
diff --git a/src/runtime/CPUUtils.cpp b/src/runtime/CPUUtils.cpp
index a7dd464540..74f0f58248 100644
--- a/src/runtime/CPUUtils.cpp
+++ b/src/runtime/CPUUtils.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020 Arm Limited.
+ * Copyright (c) 2018-2021 Arm Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -34,18 +34,18 @@
 #include <fstream>
 #include <map>
 
-#ifndef BARE_METAL
+#if !defined(BARE_METAL)
 /* C++ std::regex takes up a lot of space in the standalone builds */
 #include <regex.h>
 #include <thread>
-#endif /* BARE_METAL */
+#endif /* !defined(BARE_METAL) */
 
-#if !defined(BARE_METAL) && (defined(__arm__) || defined(__aarch64__))
+#if !defined(BARE_METAL) && !defined(__APPLE__) && (defined(__arm__) || defined(__aarch64__))
 #include <sys/auxv.h>
 
 /* Get HWCAP bits from asm/hwcap.h */
 #include <asm/hwcap.h>
-#endif /* !BARE_METAL */
+#endif /* !defined(BARE_METAL) && !defined(__APPLE__) && (defined(__arm__) || defined(__aarch64__)) */
 
 /* Make sure the bits we care about are defined, just in case asm/hwcap.h is
  * out of date (or for bare metal mode) */
@@ -65,7 +65,7 @@ namespace
 {
 using namespace arm_compute;
 
-#if !defined(BARE_METAL) && (defined(__arm__) || defined(__aarch64__))
+#if !defined(BARE_METAL) && !defined(__APPLE__) && (defined(__arm__) || defined(__aarch64__))
 
 bool model_supports_dot(CPUModel model)
 {
@@ -346,7 +346,7 @@ int get_max_cpus()
     }
     return max_cpus;
 }
-#endif /* !defined(BARE_METAL) && (defined(__arm__) || defined(__aarch64__)) */
+#endif /* !defined(BARE_METAL) && !defined(__APPLE__) && (defined(__arm__) || defined(__aarch64__)) */
 
 } // namespace
 
@@ -358,7 +358,7 @@ namespace cpu
 {
 void get_cpu_configuration(CPUInfo &cpuinfo)
 {
-#if !defined(BARE_METAL) && (defined(__arm__) || defined(__aarch64__))
+#if !defined(BARE_METAL) && !defined(__APPLE__) && (defined(__arm__) || defined(__aarch64__))
     bool cpuid               = false;
     bool hwcaps_fp16_support = false;
     bool hwcaps_dot_support  = false;
@@ -406,9 +406,9 @@ void get_cpu_configuration(CPUInfo &cpuinfo)
     }
     cpuinfo.set_dotprod(one_supports_dot || hwcaps_dot_support);
     cpuinfo.set_fp16(one_supports_fp16 || hwcaps_fp16_support);
-#else  /* !defined(BARE_METAL) && (defined(__arm__) || defined(__aarch64__)) */
+#else  /* !defined(BARE_METAL) && !defined(__APPLE__) && (defined(__arm__) || defined(__aarch64__)) */
     ARM_COMPUTE_UNUSED(cpuinfo);
-#endif /* !defined(BARE_METAL) && (defined(__arm__) || defined(__aarch64__)) */
+#endif /* !defined(BARE_METAL) && !defined(__APPLE__) && (defined(__arm__) || defined(__aarch64__)) */
 }
 
 unsigned int get_threads_hint()