TEST: Just creating an OptionParser is not enough, as the OptionParser class

is entirely defined in options.h, and the linker may optimise out
libfsl-utils. The usage function is in options.cc though

unit_tests/utils/feedsRun.fslStartup

@@ -27,7 +27,7 @@ def run(cmd, ompthreads=None, blasthreads=None, fslskipglobal=None):
     print(f'  exit code: {result.returncode}')
     print(f'  stdout:    {result.stdout.strip()}')
 
-    return result.stdout.strip()
+    return result.stdout.strip().split('\n')[-1]
 
 
 def main():

unit_tests/utils/test_fslStartup.cc

@@ -19,6 +19,7 @@ int main(int argc, char *argv[]) {
     // Use something from libfsl-utils.so
     // to ensure that it gets linked.
     Utilities::OptionParser opts("test", "test");
+    opts.usage();
 
     int omp_threads;
     int blas_threads;