IVGCVSW-5676 Fixing build failure in backends jenkins job.

* Adding ref backend "ifdef" around ref test cases in
  NeonLayerTests_NDK_Bug.cpp
* Removing unnecessary includes from NeonLayerTests_NDK_Bug.cpp.
* Removing unnecessary include from NeonLayerTests.cpp
* Breaking up Backends_Capability_Test into one per backend to allow
  for conditional compilation.
* Remove unnecessary printout in src/backends/neon/test/CMakeLists.txt

Signed-off-by: Colm Donelan <Colm.Donelan@arm.com>
Change-Id: I9a36cd197e684ed55af244e5c998ee67bb8da88c
diff --git a/src/backends/backendsCommon/test/CompatibilityTests.cpp b/src/backends/backendsCommon/test/CompatibilityTests.cpp
index 1c4ff70..915a015 100644
--- a/src/backends/backendsCommon/test/CompatibilityTests.cpp
+++ b/src/backends/backendsCommon/test/CompatibilityTests.cpp
@@ -119,15 +119,34 @@
 
 BOOST_AUTO_TEST_SUITE(BackendCapability)
 
-BOOST_AUTO_TEST_CASE(Backends_Capability_Test)
-{
-    auto neonBackend = std::make_unique<NeonBackend>();
-    auto clBackend   = std::make_unique<ClBackend>();
-    auto refBackend  = std::make_unique<RefBackend>();
+#if defined(ARMNNREF_ENABLED)
 
-    BOOST_CHECK(!neonBackend->HasCapability(armnn::BackendCapability::NonConstWeights));
-    BOOST_CHECK(!clBackend->HasCapability(armnn::BackendCapability::NonConstWeights));
+BOOST_AUTO_TEST_CASE(Ref_Backends_Capability_Test)
+{
+    auto refBackend  = std::make_unique<RefBackend>();
     BOOST_CHECK(refBackend->HasCapability(armnn::BackendCapability::NonConstWeights));
 }
 
+#endif
+
+#if defined(ARMCOMPUTENEON_ENABLED)
+
+BOOST_AUTO_TEST_CASE(Neon_Backends_Capability_Test)
+{
+    auto neonBackend = std::make_unique<NeonBackend>();
+    BOOST_CHECK(!neonBackend->HasCapability(armnn::BackendCapability::NonConstWeights));
+}
+
+#endif
+
+#if defined(ARMCOMPUTECL_ENABLED)
+
+BOOST_AUTO_TEST_CASE(Cl_Backends_Capability_Test)
+{
+    auto clBackend   = std::make_unique<ClBackend>();
+    BOOST_CHECK(!clBackend->HasCapability(armnn::BackendCapability::NonConstWeights));
+}
+
+#endif
+
 BOOST_AUTO_TEST_SUITE_END()
diff --git a/src/backends/neon/test/CMakeLists.txt b/src/backends/neon/test/CMakeLists.txt
index 5c37f1f..d2363ad 100644
--- a/src/backends/neon/test/CMakeLists.txt
+++ b/src/backends/neon/test/CMakeLists.txt
@@ -38,7 +38,6 @@
    list(APPEND armnnNeonBackendUnitTests_sources
         NeonLayerTests_NDK_Bug.cpp
         )
-    message ( "Added NeonLayerTests_NDK_Bug.cpp" )
 else()
 
 endif()
diff --git a/src/backends/neon/test/NeonLayerTests.cpp b/src/backends/neon/test/NeonLayerTests.cpp
index c63f0c2..f484ead 100644
--- a/src/backends/neon/test/NeonLayerTests.cpp
+++ b/src/backends/neon/test/NeonLayerTests.cpp
@@ -11,8 +11,6 @@
 #include <neon/NeonLayerSupport.hpp>
 #include <neon/NeonWorkloadFactory.hpp>
 
-#include <reference/RefWorkloadFactory.hpp>
-
 #include <backendsCommon/test/ActivationFixture.hpp>
 #include <backendsCommon/test/LayerTests.hpp>
 
diff --git a/src/backends/neon/test/NeonLayerTests_NDK_Bug.cpp b/src/backends/neon/test/NeonLayerTests_NDK_Bug.cpp
index ca6dea9..1fef439 100644
--- a/src/backends/neon/test/NeonLayerTests_NDK_Bug.cpp
+++ b/src/backends/neon/test/NeonLayerTests_NDK_Bug.cpp
@@ -5,18 +5,8 @@
 
 #include "NeonWorkloadFactoryHelper.hpp"
 
-#include <test/TensorHelpers.hpp>
-#include <test/UnitTests.hpp>
-
-#include <neon/NeonLayerSupport.hpp>
 #include <neon/NeonWorkloadFactory.hpp>
-
-#include <reference/RefWorkloadFactory.hpp>
-
-#include <backendsCommon/test/ActivationFixture.hpp>
-#include <backendsCommon/test/LayerTests.hpp>
-
-#include <boost/test/unit_test.hpp>
+#include <test/UnitTests.hpp>
 
 BOOST_AUTO_TEST_SUITE(Compute_ArmComputeNeon)
 
@@ -42,13 +32,16 @@
 ARMNN_AUTO_TEST_CASE_WITH_THF(LstmLayerFloat32NoCifgWithPeepholeWithProjectionWithLayerNorm,
                               LstmLayerFloat32NoCifgWithPeepholeWithProjectionWithLayerNormTest)
 
-ARMNN_COMPARE_REF_AUTO_TEST_CASE_WITH_THF(CompareSoftmaxBeta1WithReference, CompareSoftmaxTest, 1.0f)
-ARMNN_COMPARE_REF_AUTO_TEST_CASE_WITH_THF(CompareSoftmaxBeta2WithReference, CompareSoftmaxTest, 2.0f)
-
 // ReduceSum
 ARMNN_AUTO_TEST_CASE_WITH_THF(ReduceSumFloat32, ReduceSumSimpleTest<DataType::Float32>)
 
 ARMNN_AUTO_TEST_CASE_WITH_THF(ReduceSumSingleAxisFloat32_3, ReduceSumSingleAxisTest3<DataType::Float32>)
 
+#if defined(ARMNNREF_ENABLED)
+
+ARMNN_COMPARE_REF_AUTO_TEST_CASE_WITH_THF(CompareSoftmaxBeta1WithReference, CompareSoftmaxTest, 1.0f)
+ARMNN_COMPARE_REF_AUTO_TEST_CASE_WITH_THF(CompareSoftmaxBeta2WithReference, CompareSoftmaxTest, 2.0f)
+
+#endif
 
 BOOST_AUTO_TEST_SUITE_END()