Add --hipcc_explicit_lib option

Tells hipcc not to add /opt/hip or -lhip_hcc to command-line
(since it has already been done).

tests/src/CMakeLists.txt

@@ -62,6 +62,8 @@ else()
 endif()
 
 set (HIPCC ${HIP_PATH}/bin/hipcc)
+set (CMAKE_CXX_COMPILER ${HIPCC})
+set (CMAKE_CXX_FLAGS --hipcc_explicit_lib)
 
 
 add_library(test_common OBJECT test_common.cpp )
@@ -116,7 +118,6 @@ macro (make_test_matches exe match_string)
 endmacro()
 
 
-set (CMAKE_CXX_COMPILER ${HIPCC})
 
 #make_hip_executable (hipAPIStreamEnable hipAPIStreamEnable.cpp)
 #make_hip_executable (hipAPIStreamDisable hipAPIStreamDisable.cpp)