Index: runtime/src/CMakeLists.txt
===================================================================
--- runtime/src/CMakeLists.txt
+++ runtime/src/CMakeLists.txt
@@ -239,6 +239,9 @@
   configure_file(${LIBOMP_INC_DIR}/omp_lib.h.var omp_lib.h @ONLY)
   configure_file(${LIBOMP_INC_DIR}/omp_lib.f.var omp_lib.f @ONLY)
   configure_file(${LIBOMP_INC_DIR}/omp_lib.f90.var omp_lib.f90 @ONLY)
+  if ("${CMAKE_Fortran_COMPILER_ID}" STREQUAL "GNU")
+    set(ADDITIONAL_Fortran_FLAGS "-fno-range-check")
+  endif()
   add_custom_target(libomp-mod ALL DEPENDS omp_lib.mod omp_lib_kinds.mod)
   libomp_get_fflags(LIBOMP_CONFIGURED_FFLAGS)
   if(CMAKE_Fortran_COMPILER_SUPPORTS_F90)
@@ -248,7 +251,8 @@
   endif()
   add_custom_command(
     OUTPUT omp_lib.mod omp_lib_kinds.mod
-    COMMAND ${CMAKE_Fortran_COMPILER} -c ${LIBOMP_CONFIGURED_FFLAGS} ${LIBOMP_FORTRAN_SOURCE_FILE}
+    COMMAND ${CMAKE_Fortran_COMPILER} -c ${ADDITIONAL_Fortran_FLAGS}
+            ${LIBOMP_CONFIGURED_FFLAGS} ${LIBOMP_FORTRAN_SOURCE_FILE}
     DEPENDS ${CMAKE_CURRENT_BINARY_DIR}/${LIBOMP_FORTRAN_SOURCE_FILE}
       ${CMAKE_CURRENT_BINARY_DIR}/omp_lib.h
   )