configure.in: Check for "htonll".

The first patch adds support to check if the htonl and htonll functions
(which are used in AIX port) are available in configure. Until now the
AIX port used these functions without perform any existence test.

Signed-off-by: Florian Forster <octo@leeloo.lan.home.verplant.org>

diff --git a/configure.in b/configure.in
index 5daf533..f46a362 100644 (file)
--- a/configure.in
+++ b/configure.in
@@ -906,6 +906,27 @@ if test "x$have_getmntent" = "xgen"; then
                  [Define if the function getmntent exists. It's the version from libgen.])
 fi
 
+# Check for htonll
+AC_MSG_CHECKING([if have htonll defined])
+
+    have_htonll="no"
+    AC_RUN_IFELSE([
+       AC_LANG_PROGRAM([
+#include <sys/types.h>
+#include <netinet/in.h>
+#ifdef HAVE_INTTYPES_H
+#include <inttypes.h> 
+#endif
+       ], [
+          return htonll(0);
+       ])
+    ], [
+      have_htonll="yes"
+      AC_DEFINE(HAVE_HTONLL, 1, [Define if the function htonll exists.])
+    ])
+ 
+AC_MSG_RESULT([$have_htonll])
+
 # Check for structures
 AC_CHECK_MEMBERS([struct if_data.ifi_ibytes, struct if_data.ifi_opackets, struct if_data.ifi_ierrors],
        [AC_DEFINE(HAVE_STRUCT_IF_DATA, 1, [Define if struct if_data exists and is usable.])],

diff --git a/src/common.c b/src/common.c
index 7c2c30e..b9e41b1 100644 (file)
--- a/src/common.c
+++ b/src/common.c
@@ -659,6 +659,7 @@ long long get_kstat_value (kstat_t *ksp, char *name)
 }
 #endif /* HAVE_LIBKSTAT */
 
+#ifndef HAVE_HTONLL
 unsigned long long ntohll (unsigned long long n)
 {
 #if BYTE_ORDER == BIG_ENDIAN
@@ -676,6 +677,7 @@ unsigned long long htonll (unsigned long long n)
        return (((unsigned long long) htonl (n)) << 32) + htonl (n >> 32);
 #endif
 } /* unsigned long long htonll */
+#endif /* HAVE_HTONLL */
 
 #if FP_LAYOUT_NEED_NOTHING
 /* Well, we need nothing.. */

diff --git a/src/common.h b/src/common.h
index 6682e1c..8a9f335 100644 (file)
--- a/src/common.h
+++ b/src/common.h
@@ -236,8 +236,10 @@ int get_kstat (kstat_t **ksp_ptr, char *module, int instance, char *name);
 long long get_kstat_value (kstat_t *ksp, char *name);
 #endif
 
+#ifndef HAVE_HTONLL
 unsigned long long ntohll (unsigned long long n);
 unsigned long long htonll (unsigned long long n);
+#endif
 
 #if FP_LAYOUT_NEED_NOTHING
 # define ntohd(d) (d)