From: Alexander Barton <alex@barton.de>
Date: Fri, 23 Apr 2010 08:55:50 +0000 (+0200)
Subject: Include netinet/{in.h, in_systm.h} when checking for netinet/ip.h
X-Git-Tag: rel-16-rc2~8
X-Git-Url: https://arthur.barton.de/cgi-bin/gitweb.cgi?p=ngircd-alex.git;a=commitdiff_plain;h=6b0bb665c3cb31ba93fb5ac8197f033532614fd4

Include netinet/{in.h, in_systm.h} when checking for netinet/ip.h

This solves warning messages of autoconf on e.g. FreeBSD 8:

configure: WARNING: netinet/ip.h: present but cannot be compiled
configure: WARNING: netinet/ip.h:   check for missing prerequisite headers?
---

diff --git a/configure.in b/configure.in
index 153ec579..b053c416 100644
--- a/configure.in
+++ b/configure.in
@@ -101,12 +101,19 @@ AC_HEADER_TIME
 AC_HEADER_SYS_WAIT
 
 AC_CHECK_HEADERS([ \
-	ctype.h errno.h fcntl.h netdb.h netinet/in.h stdlib.h string.h \
-	strings.h sys/socket.h sys/time.h unistd.h \
+	ctype.h errno.h fcntl.h netdb.h netinet/in.h netinet/in_systm.h \
+	stdlib.h string.h strings.h sys/socket.h sys/time.h unistd.h \
 	],,AC_MSG_ERROR([required C header missing!]))
 
 AC_CHECK_HEADERS([ \
-	arpa/inet.h ctype.h malloc.h netinet/ip.h stdbool.h stddef.h varargs.h])
+	arpa/inet.h ctype.h malloc.h netinet/ip.h stdbool.h stddef.h varargs.h \
+	],[],[],[[
+	#include <netinet/in.h>
+	#ifdef HAVE_NETINET_IN_SYSTM_H
+		#include <netinet/in_systm.h>
+	#endif
+	]]
+)
 
 # -- Datatypes --