Adding -pthread flag for linking issues into src/Makefile (#30)

* Adding -pthread flag for linking issues into src/Makefile

* Adding -pthread flag for linking issues into CMakeLists.txt

[ROCm/rccl-tests commit: 5275aa5715]

projects/rccl-tests/CMakeLists.txt

@@ -1,6 +1,8 @@
 # ########################################################################
 # Copyright 2022 Advanced Micro Devices, Inc.
 # ########################################################################
+#Adding pthread flag for linking
+set( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -pthread")
 macro(check_mpi mpi_compiler mpi_lib_a mpi_lib_so)
     find_program(MPI_MPICXX ${mpi_compiler})
     if (MPI_MPICXX)

projects/rccl-tests/src/Makefile

@@ -26,7 +26,7 @@ endif
 HIPCUFLAGS += -I$(ROCM_PATH)/include
 HIPCUFLAGS += -I$(ROCM_PATH)/include/hip
 LDFLAGS    += -L$(ROCM_PATH)/lib -lhsa-runtime64 -lrt
-HIPLDFLAGS += $(CUSTOM_RCCL_LIB) -L$(ROCM_PATH)/lib -lhsa-runtime64 -lrt
+HIPLDFLAGS += $(CUSTOM_RCCL_LIB) -L$(ROCM_PATH)/lib -lhsa-runtime64 -lrt -pthread
 
 ifeq ($(DEBUG), 0)
 HIPCUFLAGS += -O3