From 09e186e425d3a880306ce43702f9c03eb3ee628f Mon Sep 17 00:00:00 2001
From: Michele Calgaro <michele.calgaro@yahoo.it>
Date: Fri, 16 Jan 2026 11:15:59 +0900
Subject: Remove support for HPUX, which is discontinued and does not provide a
 c++17 complaint compiler.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
---
 kbiff/kbiffmonitor.cpp | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/kbiff/kbiffmonitor.cpp b/kbiff/kbiffmonitor.cpp
index 398f407..d6ac176 100644
--- a/kbiff/kbiffmonitor.cpp
+++ b/kbiff/kbiffmonitor.cpp
@@ -50,10 +50,6 @@
 
 #define MAIL_STATE_FILE "kbiffstate"
 
-#if defined (_HPUX_SOURCE)
-extern int h_errno;
-#endif
-
 static bool real_from(const TQString& buffer);
 static const char* compare_header(const char* header, const char* field);
 
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