make OpenMP an optional dependency (#1498)

Fix #1491.
deepmodeling · Feb 23, 2022 · 87b4930 · 87b4930
1 parent d9a4a86
commit 87b4930
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/source/lib/include/ewald.h b/source/lib/include/ewald.h
@@ -2,7 +2,12 @@
 
 #include<algorithm>
 #include<cassert>
+#if defined(_OPENMP)
 #include<omp.h>
+#else
+int omp_get_num_threads() { return 1; }
+int omp_get_thread_num() { return 0; }
+#endif
 
 #include "utilities.h"
 #include "region.h"