From 7e6485dd32c678c108f68280830e6a129655c49c Mon Sep 17 00:00:00 2001
From: Trond Norbye <trond.norbye@sun.com>
Date: Fri, 13 Mar 2009 11:23:44 +0100
Subject: [PATCH] Check if the operating system provides a working ntohll

---
 config/byteorder.m4      | 40 +++++++++++++++++++++++++++++++++++-----
 libmemcached/Makefile.am |  7 +++++--
 libmemcached/common.h    |  2 ++
 3 files changed, 42 insertions(+), 7 deletions(-)

diff --git a/config/byteorder.m4 b/config/byteorder.m4
index fe88605a..0d8cc8f8 100644
--- a/config/byteorder.m4
+++ b/config/byteorder.m4
@@ -1,11 +1,41 @@
-AC_RUN_IFELSE([ 
-   AC_LANG_PROGRAM([
+AC_DEFUN([DETECT_BYTEORDER],
+[
+    AC_MSG_CHECKING([for htonll])
+    have_htoll="no"
+    AC_RUN_IFELSE([
+       AC_LANG_PROGRAM([
 #include <sys/types.h>
 #include <netinet/in.h>
 #include <inttypes.h>
-      ], [
+       ], [
+          return htonll(0);
+       ])            
+    ], [
+      have_htoll="yes"
+      AC_DEFINE([HAVE_HTONLL], [1], [Have ntohll])
+    ])
+
+    AC_MSG_RESULT([$have_htoll])
+    AM_CONDITIONAL([BUILD_BYTEORDER],[test "x$have_htoll" == "xno"])
+    if test "x$have_htoll" == "xno"
+    then
+       AC_MSG_CHECKING([byteorder])
+       have_htoll="no"
+       AC_RUN_IFELSE([
+          AC_LANG_PROGRAM([
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <inttypes.h>
+          ], [
 if (htonl(5) != 5) {
    return 1;
 }
-      ])            
-   ], AC_DEFINE([BYTEORDER_BIG_ENDIAN], [1], [Enable big endian byteorder]))
+          ])            
+       ], [
+          AC_MSG_RESULT([big endian])
+          AC_DEFINE([BYTEORDER_BIG_ENDIAN], [1], [Enable big endian byteorder])
+       ], AC_MSG_RESULT([little endian]))
+    fi
+])
+
+DETECT_BYTEORDER
diff --git a/libmemcached/Makefile.am b/libmemcached/Makefile.am
index bcb3cd65..8e5f85c5 100644
--- a/libmemcached/Makefile.am
+++ b/libmemcached/Makefile.am
@@ -61,8 +61,11 @@ libmemcached_la_SOURCES = crc.c \
 			  memcached_verbosity.c \
 			  memcached_version.c \
 			  murmur_hash.c \
-			  jenkins_hash.c \
-                          byteorder.c
+			  jenkins_hash.c
+
+if BUILD_BYTEORDER
+libmemcached_la_SOURCES += byteorder.c
+endif
 
 libmemcached_la_DEPENDENCIES = @DTRACE_OBJ@
 libmemcached_la_LIBADD = @DTRACE_OBJ@
diff --git a/libmemcached/common.h b/libmemcached/common.h
index d91c6b30..b7a65709 100644
--- a/libmemcached/common.h
+++ b/libmemcached/common.h
@@ -115,8 +115,10 @@ memcached_return run_distribution(memcached_st *ptr);
 uint32_t generate_hash(memcached_st *ptr, const char *key, size_t key_length);
 memcached_return memcached_server_remove(memcached_server_st *st_ptr);
 
+#ifndef HAVE_HTONLL
 extern uint64_t ntohll(uint64_t);
 extern uint64_t htonll(uint64_t);
+#endif
 
 memcached_return memcached_purge(memcached_server_st *ptr);
 
-- 
2.30.2