linux/filter.h may need linux/types on old systems.

diff --git a/configure.ac b/configure.ac
index fba0ae1afc3177df47d2317e7b61286814810602..a0e3c1d6d7a3408ec04a7b29f4f4e8797a19b1e8 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -51,9 +51,8 @@ AC_CHECK_HEADERS([ \
   sys/queue.h \
   syslog.h \
   unistd.h \
-  linux/sockios.h \
-  linux/filter.h \
   net/if.h \
+  linux/sockios.h \
 ],,AC_MSG_ERROR([Required header missing.]))
 AC_CHECK_HEADERS([ \
   linux/wireless.h \
@@ -65,6 +64,11 @@ AC_CHECK_HEADERS([ \
 @%:@include <arpa/inet.h>
 @%:@include <linux/if.h>
 ])
+AC_CHECK_HEADERS([ \
+  linux/filter.h \
+],,AC_MSG_ERROR([Required header missing.]),[
+@%:@include <linux/types.h>
+])
 
 
 # Check for sys/queue.h completeness, missing bits will be in compat.h