From dcb062b063dd5f8d715bae03bc7fd569d0f8807c Mon Sep 17 00:00:00 2001
From: Eric Branlund <ebranlund@fastmail.com>
Date: Fri, 18 Sep 2020 16:59:12 -0700
Subject: [PATCH] Put in place a workaround for compiling on Linux: unset
 si_ptr which is conflicting with Hengband.

---
 src/system/h-system.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/system/h-system.h b/src/system/h-system.h
index 04e43fd5c..f516cab2b 100644
--- a/src/system/h-system.h
+++ b/src/system/h-system.h
@@ -70,6 +70,15 @@
 
 # include <sys/stat.h>
 
+# ifdef si_ptr
+/*
+ * Linux (at least Debian 10) defines this to access a field in siginfo_t
+ * (see the sigaction(2) man page).  Get rid of it since Hengband isn't
+ * using siginfo_t and does use si_ptr in other contexts.
+ */
+#  undef si_ptr
+# endif
+
 #endif /* SET_UID */
 
 #include <string.h>
-- 
2.11.0