[llvm-bugs] [Bug 40536] New: undefined reference to __kmpc_push_target_tripcount

via llvm-bugs llvm-bugs at lists.llvm.org
Wed Jan 30 11:49:20 PST 2019


https://bugs.llvm.org/show_bug.cgi?id=40536

            Bug ID: 40536
           Summary: undefined reference to __kmpc_push_target_tripcount
           Product: OpenMP
           Version: unspecified
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P
         Component: Clang Compiler Support
          Assignee: a.bataev at hotmail.com
          Reporter: jdenny.ornl at gmail.com
                CC: llvm-bugs at lists.llvm.org

At r352640 and since r350571, some directives cause an undefined reference to
__kmpc_push_target_tripcount.  For example:

```
$ cat test.c
int main() {
  #pragma omp target teams
  #pragma omp distribute
  for (int i = 0; i < 8; ++i)
    ;
  return 0;
}
$ clang -fopenmp test.c
/tmp/test-b61bc4.o: In function `main':
test.c:(.text+0x1c): undefined reference to `__kmpc_push_target_tripcount'
clang-8: error: linker command failed with exit code 1 (use -v to see
invocation)
$ clang -fopenmp -lomptarget test.c
$ ./a.out 
Libomptarget fatal error 1: default offloading policy must switched to
mandatory or disabled
$ clang -fopenmp -fopenmp-targets=nvptx64 test.c
$ ./a.out
$ echo $?
0
```

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