--- cnijfilter2-source-6.90-1/lgmon3/src/common/libcnnet2_type.h	2025-06-30 16:56:58.000000000 +1200
+++ cnijfilter2-source-6.90-1.new/lgmon3/src/common/libcnnet2_type.h	2025-11-02 01:38:14.944227622 +1300
@@ -47,8 +47,10 @@
   CNNET2_SETTING_FLAG_DISCOVER_PACKET_WAIT_MILLIS,         /*検索パケット複数送信時の待ち時間*/
 } CNNET2_SETTING_FLAGS;
 
-#ifndef __cplusplus
-typedef char bool;
+#if defined(__GNUC__) && __GNUC__ < 15
+  #ifndef __cplusplus
+  typedef char bool;
+  #endif
 #endif
 
 typedef struct {