From: David Hankins <dhankins@isc.org>
Date: Sat, 19 May 2007 21:35:21 +0000 (+0000)
Subject: Load net/if_dl.h if it exists (FreeBSD compile fix).
X-Git-Tag: v4_0_0a1~6
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6dd7efa2109c0538303bd9e81bbc143a40d61578;p=thirdparty%2Fdhcp.git

Load net/if_dl.h if it exists (FreeBSD compile fix).
---

diff --git a/common/discover.c b/common/discover.c
index a27217bf6..0304468a5 100644
--- a/common/discover.c
+++ b/common/discover.c
@@ -34,7 +34,7 @@
 
 #ifndef lint
 static char copyright[] =
-"$Id: discover.c,v 1.56 2007/05/19 18:47:14 dhankins Exp $ Copyright (c) 2004-2007 Internet Systems Consortium.  All rights reserved.\n";
+"$Id: discover.c,v 1.57 2007/05/19 21:35:21 dhankins Exp $ Copyright (c) 2004-2007 Internet Systems Consortium.  All rights reserved.\n";
 #endif /* not lint */
 
 #include "dhcpd.h"
@@ -906,7 +906,7 @@ discover_interfaces(int state) {
 
 		/* If we have the capability, extract link information
 		   and record it in. */
-#ifdef AF_LINK
+#ifdef HAVE_AF_LINK
 		if (info.addr.ss_family == AF_LINK) {
 			struct sockaddr_dl *d = (struct sockaddr_dl*)&info.addr;
 			tmp->hw_address.hlen = d->sdl_alen;
diff --git a/configure b/configure
index 3ba4f15e1..daef2755e 100755
--- a/configure
+++ b/configure
@@ -4184,6 +4184,154 @@ fi
 
 
 
+# Look for optional headers.
+if test "${ac_cv_header_net_if_dl_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for net/if_dl.h" >&5
+echo $ECHO_N "checking for net/if_dl.h... $ECHO_C" >&6
+if test "${ac_cv_header_net_if_dl_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_net_if_dl_h" >&5
+echo "${ECHO_T}$ac_cv_header_net_if_dl_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking net/if_dl.h usability" >&5
+echo $ECHO_N "checking net/if_dl.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <net/if_dl.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"
+			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking net/if_dl.h presence" >&5
+echo $ECHO_N "checking net/if_dl.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <net/if_dl.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: net/if_dl.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: net/if_dl.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: net/if_dl.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: net/if_dl.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: net/if_dl.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: net/if_dl.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: net/if_dl.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: net/if_dl.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: net/if_dl.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## --------------------------------- ##
+## Report this to dhcp-users@isc.org ##
+## --------------------------------- ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for net/if_dl.h" >&5
+echo $ECHO_N "checking for net/if_dl.h... $ECHO_C" >&6
+if test "${ac_cv_header_net_if_dl_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_net_if_dl_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_net_if_dl_h" >&5
+echo "${ECHO_T}$ac_cv_header_net_if_dl_h" >&6
+
+fi
+if test $ac_cv_header_net_if_dl_h = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_IF_DL 1
+_ACEOF
+
+fi
+
+
+
 # find an MD5 library
 echo "$as_me:$LINENO: checking for library containing MD5_Init" >&5
 echo $ECHO_N "checking for library containing MD5_Init... $ECHO_C" >&6
diff --git a/configure.ac b/configure.ac
index d9bd2b0de..849db1c16 100644
--- a/configure.ac
+++ b/configure.ac
@@ -66,6 +66,11 @@ AC_CHECK_HEADER(net/bpf.h,
 		  [Define to 1 to use the 
 		   Berkeley Packet Filter interface code.]))
 
+# Look for optional headers.
+AC_CHECK_HEADER(net/if_dl.h,
+	AC_DEFINE([HAVE_IF_DL], [1],
+		  [Define to 1 if the system has a net/if_dl.h header.]))
+
 # find an MD5 library
 AC_SEARCH_LIBS(MD5_Init, [crypto])
 AC_SEARCH_LIBS(MD5Init, [crypto])
diff --git a/includes/config.h.in b/includes/config.h.in
index 4c4753803..1d95a5db8 100644
--- a/includes/config.h.in
+++ b/includes/config.h.in
@@ -40,6 +40,9 @@
 /* Define to 1 if you have the <unistd.h> header file. */
 #undef HAVE_UNISTD_H
 
+/* Define to 1 if you have the <net/if_dl.h> header file. */
+#undef HAVE_IF_DL
+
 /* Define to 1 if the inet_aton() function is missing. */
 #undef NEED_INET_ATON
 
diff --git a/includes/dhcpd.h b/includes/dhcpd.h
index 4fb0467d2..69feb44cf 100644
--- a/includes/dhcpd.h
+++ b/includes/dhcpd.h
@@ -58,6 +58,9 @@
 #include <net/if.h>
 #include <net/route.h>
 #include <net/if_arp.h>
+#if HAVE_IF_DL
+# include <net/if_dl.h>
+#endif
 
 #include <setjmp.h>