--- lib/src/gretl_matrix.c	2024-10-22 03:21:44
+++ lib/src/gretl_matrix.c	2024-11-09 21:23:32
@@ -316,7 +316,9 @@
    on Windows.
 */
 
+#ifdef _OPENMP
 #define LIMIT_THREADS 1
+#endif
 
 #if LIMIT_THREADS