Link OpenMP clang+gfortran build with -lomp

ctest/CMakeLists.txt

@@ -43,6 +43,9 @@ endif()
   if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "QNX")
       target_link_libraries(x${float_char}cblat1 m)
   endif()
+  if (USE_OPENMP AND CMAKE_Fortran_COMPILER_ID STREQUAL GNU AND CMAKE_C_COMPILER_ID STREQUAL CLANG)
+    target_link_libraries(${test_bin} omp)
+  endif()
   add_test(NAME "x${float_char}cblat1"
     COMMAND $<TARGET_FILE:x${float_char}cblat1>)
 
@@ -68,6 +71,9 @@ endif()
   if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "QNX")
     target_link_libraries(x${float_char}cblat2 m)
   endif()
+  if (USE_OPENMP AND CMAKE_Fortran_COMPILER_ID STREQUAL GNU AND CMAKE_C_COMPILER_ID STREQUAL CLANG)
+    target_link_libraries(${test_bin} omp)
+  endif()
   add_test(NAME "x${float_char}cblat2"
     COMMAND ${test_helper} $<TARGET_FILE:x${float_char}cblat2> "${PROJECT_SOURCE_DIR}/ctest/${float_char}in2")
 
@@ -93,6 +99,9 @@ endif()
   if(${CMAKE_SYSTEM_NAME} MATCHES "Linux" OR ${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD" OR ${CMAKE_SYSTEM_NAME} MATCHES "QNX")
     target_link_libraries(x${float_char}cblat3 m)
   endif()
+  if (USE_OPENMP AND CMAKE_Fortran_COMPILER_ID STREQUAL GNU AND CMAKE_C_COMPILER_ID STREQUAL CLANG)
+    target_link_libraries(${test_bin} omp)
+  endif()
   add_test(NAME "x${float_char}cblat3"
     COMMAND ${test_helper} $<TARGET_FILE:x${float_char}cblat3> "${PROJECT_SOURCE_DIR}/ctest/${float_char}in3")