From c89cfeb07597e21450142eba9464a5d656921481 Mon Sep 17 00:00:00 2001
From: AsTonyshment <baotaoni@pku.edu.cn>
Date: Mon, 31 Aug 2026 19:02:55 +0800
Subject: [PATCH] Fix: Restore LibXC functional IDs after XC split

---
 source/source_hamilt/module_xc/xc_grad.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/source/source_hamilt/module_xc/xc_grad.cpp b/source/source_hamilt/module_xc/xc_grad.cpp
index 9d83322912..c7bf9a2013 100644
--- a/source/source_hamilt/module_xc/xc_grad.cpp
+++ b/source/source_hamilt/module_xc/xc_grad.cpp
@@ -17,6 +17,10 @@
 #include "xc_grad_internal.h"
 #include "source_base/timer.h"
 
+#ifdef __LIBXC
+#include <xc_funcs.h>
+#endif
+
 void XC_Functional::gradcorr(
     double &etxc,
     double &vtxc,