From a84d9675b4b2e65a8e6e075b714bbec67825b44a Mon Sep 17 00:00:00 2001
From: "Steffen (Daode) Nurpmeso" <steffen@sdaoden.eu>
Date: Thu, 18 Aug 2016 19:00:52 +0200
Subject: [PATCH] mk-conf.sh: we actually REQUIRE ftruncate(2)!

---
 mk-conf.sh | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/mk-conf.sh b/mk-conf.sh
index c94b2c0d..474e62bb 100644
--- a/mk-conf.sh
+++ b/mk-conf.sh
@@ -1249,6 +1249,21 @@ else
    config_exit 1
 fi
 
+if link_check ftruncate 'ftruncate(2)' \
+   '#define HAVE_FTRUNCATE' << \!
+#include <unistd.h>
+#include <sys/types.h>
+int main(void){
+   return (ftruncate(0, 0) != 0);
+}
+!
+then
+   :
+else
+   msg 'ERROR: we require the ftruncate(2) system call.'
+   config_exit 1
+fi
+
 if run_check sa_restart 'SA_RESTART (for sigaction(2))' << \!
 #include <signal.h>
 # include <errno.h>
-- 
2.11.4.GIT