--- CPP_INTERFACE/CPPWrapper.cpp	2026-01-23 05:35:17.000000000 +0800
+++ CPP_INTERFACE/CPPWrapper.cpp	2026-06-22 17:16:35.000000000 +0800
@@ -33,6 +33,9 @@
 #include <complex>
 #include <iomanip>
 
+#ifndef HOST_NAME_MAX
+#define HOST_NAME_MAX _POSIX_HOST_NAME_MAX
+#endif
 
 #define OMPI_SKIP_MPICXX 1
 #ifdef HAVE_MPI