Got undeclared identifier 'htonll' when building on Mac OS X 10.9

[lianghe-houzz]

/tmp/hhvm20150831-52889-miidu8/hhvm-3.9.1/hphp/runtime/ext/fb/ext_fb.cpp:316:21: error: use of undeclared identifier 'htonll'; did you mean 'atoll'?
3241     uint64_t nval = htonll(kInt54Prefix | val);
3242                     ^~~~~~
3243                     atoll

Looks like need a check similar as in hphp/runtime/base/thrift-buffer.h:39-60 ?

[jwatzman]

Interesting, will look into it later.

[jwatzman]

Looks like need a check similar as in hphp/runtime/base/thrift-buffer.h:39-60 ?

Yeah, it's unclear why this file has its own implementations (maybe there is a good reason, we'll see); we can probably move the one in thrift-buffer.h into portability.h or something.

[jwatzman]

But also curious why this is working on my machine. Maybe something with __BYTE_ORDER on 10.9 vs 10.10.

[wjywbs]

htonll is defined in 10.10 at /usr/include/sys/_endian.h, but not in 10.9.

[jwatzman]

Attempted fix is up internally. I don't actually have a 10.9 machine to test with though...

[lianghe-houzz]

I tried to patch ext_fb.cpp like what I said, and can be successfully built without other change. :)

[jwatzman]

Yeah that's what my internal diff does, more or less :) Running into some infra issues right now, so it might be a couple of days to get it out since I'm in the middle of some travel right now.

[jwatzman]

Here's my patch, since it could be a couple of days. If you could confirm this patch fixes the issue, that would actually be really useful since I don't have a 10.9 machine and am just kind of guessing based on what you and @wjywbs said.

commit 7a0ccb5c8162826ae0ed3cf9531f62568147d2db
Author: Josh Watzman <jwatzman@fb.com>
Date:   Wed Sep 2 11:41:58 2015 -0700

    [hhvm] Only one compatibility implementation of htonll

    Summary:
    We have two, but one is much less featureful than the other,
    and is also implemented as two 32-bit swaps (when some libc-provided
    implementations can just use a single asm instruction sometimes). Let's
    just use one.

    I *hope* this will also fix the build on OS X 10.9, where `htonll` isn't
    defined, by standardizing on the macro that actually works there. But I
    don't have a system to test on.

    Ref. https://github.com/hhvm/homebrew-hhvm/issues/4

diff --git a/hphp/runtime/base/thrift-buffer.h b/hphp/runtime/base/thrift-buffer.h
index cca13dd..f44a696 100644
--- a/hphp/runtime/base/thrift-buffer.h
+++ b/hphp/runtime/base/thrift-buffer.h
@@ -19,45 +19,7 @@

 #include "hphp/runtime/base/type-string.h"
 #include "hphp/runtime/base/variable-serializer.h"
-
-#include <arpa/inet.h>
-#if defined(__FreeBSD__)
-# include <sys/endian.h>
-#elif defined(__APPLE__)
-# include <machine/endian.h>
-# include <libkern/OSByteOrder.h>
-#elif defined(_MSC_VER)
-# include <stdlib.h>
-#else
-# include <byteswap.h>
-# include <map>
-# include <memory>
-# include <utility>
-# include <vector>
-#endif
-
-#if !defined(htonll) && !defined(ntohll)
-
-#if __BYTE_ORDER == __LITTLE_ENDIAN
-# if defined(__FreeBSD__)
-#  define htonll(x) bswap64(x)
-#  define ntohll(x) bswap64(x)
-# elif defined(__APPLE__)
-#  define htonll(x) OSSwapInt64(x)
-#  define ntohll(x) OSSwapInt64(x)
-# elif defined(_MSC_VER)
-#  define htonll(x) _byteswap_uint64(x)
-#  define ntohll(x) _byteswap_uint64(x)
-# else
-#  define htonll(x) bswap_64(x)
-#  define ntohll(x) bswap_64(x)
-# endif
-#else
-# define htonll(x) (x)
-# define ntohll(x) (x)
-#endif
-
-#endif
+#include "hphp/util/htonll.h"

 namespace HPHP {
 ///////////////////////////////////////////////////////////////////////////////
diff --git a/hphp/runtime/ext/fb/ext_fb.cpp b/hphp/runtime/ext/fb/ext_fb.cpp
index a30331b..36c0fda 100644
--- a/hphp/runtime/ext/fb/ext_fb.cpp
+++ b/hphp/runtime/ext/fb/ext_fb.cpp
@@ -29,6 +29,7 @@

 #include <folly/String.h>

+#include "hphp/util/htonll.h"
 #include "hphp/util/logger.h"
 #include "hphp/runtime/base/array-init.h"
 #include "hphp/runtime/base/builtin-functions.h"
@@ -76,24 +77,6 @@ const StaticString

 ///////////////////////////////////////////////////////////////////////////////

-#if defined __BYTE_ORDER && defined __BIG_ENDIAN
-/* Linux and other systems don't currently support a ntohx or htonx
-   set of functions for 64-bit values.  We've implemented our own here
-   which is based off of GNU Net's implementation with some slight
-   modifications (changed to macro's rather than functions). */
-#if __BYTE_ORDER == __BIG_ENDIAN
-#define ntohll(n) (n)
-#define htonll(n) (n)
-#else
-#define ntohll(n)                                                       \
-  ( (((uint64_t)ntohl(n)) << 32)                                        \
-    | ((uint64_t)ntohl((n) >> 32) & 0x00000000ffffffff) )
-#define htonll(n)                                                       \
-  ( (((uint64_t)htonl(n)) << 32)                                        \
-    | ((uint64_t)htonl((n) >> 32) & 0x00000000ffffffff) )
-#endif
-#endif
-
 /* enum of thrift types */
 enum TType {
   T_STOP    = 1,
diff --git a/hphp/util/htonll.h b/hphp/util/htonll.h
new file mode 100644
index 0000000..cb9e0cc
--- /dev/null
+++ b/hphp/util/htonll.h
@@ -0,0 +1,61 @@
+/*
+   +----------------------------------------------------------------------+
+   | HipHop for PHP                                                       |
+   +----------------------------------------------------------------------+
+   | Copyright (c) 2010-2015 Facebook, Inc. (http://www.facebook.com)     |
+   +----------------------------------------------------------------------+
+   | This source file is subject to version 3.01 of the PHP license,      |
+   | that is bundled with this package in the file LICENSE, and is        |
+   | available through the world-wide-web at the following url:           |
+   | http://www.php.net/license/3_01.txt                                  |
+   | If you did not receive a copy of the PHP license and are unable to   |
+   | obtain it through the world-wide-web, please send a note to          |
+   | license@php.net so we can mail you a copy immediately.               |
+   +----------------------------------------------------------------------+
+*/
+
+#ifndef incl_HPHP_HTONLL_H_
+#define incl_HPHP_HTONLL_H_
+
+/*
+ * Tries to find a suitable implementation of htonll/ntohll if it doesn't
+ * already exist. This could go into portability.h, but seemed specific enough
+ * to be worth pulling out.
+ */
+
+#include <arpa/inet.h>
+#if defined(__FreeBSD__)
+# include <sys/endian.h>
+#elif defined(__APPLE__)
+# include <machine/endian.h>
+# include <libkern/OSByteOrder.h>
+#elif defined(_MSC_VER)
+# include <stdlib.h>
+#else
+# include <byteswap.h>
+#endif
+
+#if !defined(htonll) && !defined(ntohll)
+
+#if __BYTE_ORDER == __LITTLE_ENDIAN
+# if defined(__FreeBSD__)
+#  define htonll(x) bswap64(x)
+#  define ntohll(x) bswap64(x)
+# elif defined(__APPLE__)
+#  define htonll(x) OSSwapInt64(x)
+#  define ntohll(x) OSSwapInt64(x)
+# elif defined(_MSC_VER)
+#  define htonll(x) _byteswap_uint64(x)
+#  define ntohll(x) _byteswap_uint64(x)
+# else
+#  define htonll(x) bswap_64(x)
+#  define ntohll(x) bswap_64(x)
+# endif
+#else
+# define htonll(x) (x)
+# define ntohll(x) (x)
+#endif
+
+#endif
+
+#endif

[jwatzman]

This should be fixed if you build with --HEAD. Closing out, LMK if it's still not working.