fix: linker errors on macOS when building with cmake

* To build using cmake OpenMP must be disabled :
    cmake ../ -DARM_COMPUTE_ENABLE_ASSERTS=ON -DARM_COMPUTE_BUILD_EXAMPLES=ON
    -DARM_COMPUTE_BUILD_TESTING=ON -DARM_COMPUTE_ENABLE_OPENMP=OFF

* Requires minimum clang version 17.0.0. This was tested with clang-1700.0.13.5

* Resolves MLCE-1562

Change-Id: Idbd190845f8ddfecf74ff4907f0a556a6ae64e43
Signed-off-by: Pablo Marquez Tello <[email protected]>
Reviewed-on: https://review.mlplatform.org/c/ml/ComputeLibrary/+/15068
Tested-by: Arm Jenkins <[email protected]>
Reviewed-by: Gunes Bayir <[email protected]>
Comments-Addressed: Arm Jenkins <[email protected]>
Benchmark: Arm Jenkins <[email protected]>

Author: morgolock

CMakeLists.txt

@@ -156,12 +156,12 @@ set_target_properties(
 
 add_library(arm_compute_graph ${ARM_COMPUTE_LIB_BUILD_TYPE})
 set_target_properties(
-  arm_compute_graph
-  PROPERTIES
-  COMPILE_OPTIONS "${ARM_COMPUTE_ARCH};${ARM_COMPUTE_COMMON_CCXX_FLAGS}"
-  COMPILE_DEFINITIONS "${ARM_COMPUTE_DEFINES}"
-  INCLUDE_DIRECTORIES "${ARM_COMPUTE_GRAPH_INCLUDE}"
-  LINK_LIBRARIES "${ARM_COMPUTE_LINK_LIBS}"
+    arm_compute_graph
+    PROPERTIES
+        COMPILE_OPTIONS "${ARM_COMPUTE_ARCH};${ARM_COMPUTE_COMMON_CCXX_FLAGS}"
+        COMPILE_DEFINITIONS "${ARM_COMPUTE_DEFINES}"
+        INCLUDE_DIRECTORIES "${ARM_COMPUTE_GRAPH_INCLUDE}"
+        LINK_LIBRARIES "${ARM_COMPUTE_LINK_LIBS}$<IF:$<PLATFORM_ID:Darwin>,;arm_compute,>"
 )
 
 add_library(

src/runtime/OMP/OMPScheduler.cpp

@@ -21,6 +21,7 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
+#if ARM_COMPUTE_OPENMP_SCHEDULER
 #include "arm_compute/runtime/OMP/OMPScheduler.h"
 
 #include "arm_compute/core/CPP/ICPPKernel.h"
@@ -157,3 +158,4 @@ void OMPScheduler::run_workloads(std::vector<arm_compute::IScheduler::Workload>
 }
 #endif /* DOXYGEN_SKIP_THIS */
 } // namespace arm_compute
+#endif /* ARM_COMPUTE_OPENMP_SCHEDULER */