Fixed errors which popped up on Ubuntu related to pthreads

Author: umar456

test/CMakeLists.txt

@@ -1,6 +1,11 @@
 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 
-FIND_PACKAGE(Threads)
+FIND_PACKAGE(Threads REQUIRED)
+IF(CMAKE_USE_PTHREADS_INIT)
+    SET(THREAD_LIB_FLAG "-pthread")
+ELSE()
+    SET(THREAD_LIB_FLAG ${CMAKE_THREAD_LIBS_INIT})
+ENDIF()
 
 IF(${BUILD_GTEST})
     INCLUDE(${CMAKE_SOURCE_DIR}/common/build_gtest.cmake)
@@ -40,8 +45,8 @@ IF(${BUILD_CPU})
         ADD_DEPENDENCIES(basic_cpu googletest arrayfire_data)
         ADD_DEPENDENCIES(index_cpu googletest arrayfire_data)
     ENDIF()
-    TARGET_LINK_LIBRARIES(basic_cpu afcpu ${CMAKE_THREAD_LIBS_INIT} ${GTEST_BOTH_LIBRARIES})
-    TARGET_LINK_LIBRARIES(index_cpu afcpu ${CMAKE_THREAD_LIBS_INIT} ${GTEST_BOTH_LIBRARIES})
+    TARGET_LINK_LIBRARIES(basic_cpu afcpu ${THREAD_LIB_FLAG} ${GTEST_BOTH_LIBRARIES})
+    TARGET_LINK_LIBRARIES(index_cpu afcpu ${THREAD_LIB_FLAG} ${GTEST_BOTH_LIBRARIES})
 ENDIF()
 
 IF(${BUILD_CUDA})
@@ -54,8 +59,8 @@ IF(${BUILD_CUDA})
         ADD_DEPENDENCIES(basic_cuda googletest arrayfire_data)
         ADD_DEPENDENCIES(index_cuda googletest arrayfire_data)
     ENDIF()
-    TARGET_LINK_LIBRARIES(basic_cuda afcuda ${CMAKE_THREAD_LIBS_INIT} ${GTEST_BOTH_LIBRARIES})
-    TARGET_LINK_LIBRARIES(index_cuda afcuda ${CMAKE_THREAD_LIBS_INIT} ${GTEST_BOTH_LIBRARIES})
+    TARGET_LINK_LIBRARIES(basic_cuda afcuda ${THREAD_LIB_FLAG} ${GTEST_BOTH_LIBRARIES})
+    TARGET_LINK_LIBRARIES(index_cuda afcuda ${THREAD_LIB_FLAG} ${GTEST_BOTH_LIBRARIES})
 ENDIF()
 
 IF(${BUILD_OPENCL})
@@ -68,8 +73,8 @@ IF(${BUILD_OPENCL})
         ADD_DEPENDENCIES(basic_opencl googletest arrayfire_data)
         ADD_DEPENDENCIES(index_opencl googletest arrayfire_data)
     ENDIF()
-    TARGET_LINK_LIBRARIES(basic_opencl afopencl ${CMAKE_THREAD_LIBS_INIT} ${GTEST_BOTH_LIBRARIES})
-    TARGET_LINK_LIBRARIES(index_opencl afopencl ${CMAKE_THREAD_LIBS_INIT} ${GTEST_BOTH_LIBRARIES})
+    TARGET_LINK_LIBRARIES(basic_opencl afopencl ${THREAD_LIB_FLAG} ${GTEST_BOTH_LIBRARIES})
+    TARGET_LINK_LIBRARIES(index_opencl afopencl ${THREAD_LIB_FLAG} ${GTEST_BOTH_LIBRARIES})
 ENDIF()
 
 INCLUDE_DIRECTORIES(${GTEST_INCLUDE_DIRS})