Add protobuf 2.3.0 sources

This is the contents of protobuf-2.3.0.tar.bz2 from
http://code.google.com/p/protobuf/downloads/list.

Change-Id: Idfde09ce7ef5ac027b07ee83f2674fbbed5c30b2

2 files changed, 39 insertions, 19 deletions

diff --git a/m4/acx_check_suncc.m4 b/m4/acx_check_suncc.m4
index 3464a84..4e8f961 100644
--- a/m4/acx_check_suncc.m4
+++ b/m4/acx_check_suncc.m4
@@ -26,7 +26,7 @@ AC_DEFUN([ACX_CHECK_SUNCC],[
   AS_IF([test "$SUNCC" = "yes" -a "x${ac_cv_env_CXXFLAGS_set}" = "x"],[
     dnl Sun Studio has a crashing bug with -xO4 in some cases. Keep this
     dnl at -xO3 until a proper test to detect those crashes can be done.
-    CXXFLAGS="-g0 -xO3 -xlibmil -xdepend -xbuiltin -mt -compat=5 -library=stlport4 -template=no%extdef ${CXXFLAGS}"
+    CXXFLAGS="-g0 -xO3 -xlibmil -xdepend -xbuiltin -mt -compat=5 -library=stlport4 -library=Crun -template=no%extdef ${CXXFLAGS}"
   ])
 
   case $host_os in
@@ -42,10 +42,6 @@ AC_DEFUN([ACX_CHECK_SUNCC],[
 
         AS_IF([test "x$ac_enable_64bit" = "xyes"],[
 
-          AS_IF([test "x${ac_cv_env_LDFLAGS_set}" = "x"],[
-            LDFLAGS="-L/usr/local/lib/${isainfo_k} ${LDFLAGS}"
-          ])
-
           AS_IF([test "x$libdir" = "x\${exec_prefix}/lib"],[
            dnl The user hasn't overridden the default libdir, so we'll
            dnl the dir suffix to match solaris 32/64-bit policy
@@ -54,12 +50,19 @@ AC_DEFUN([ACX_CHECK_SUNCC],[
 
           dnl This should just be set in CPPFLAGS and in LDFLAGS, but libtool
           dnl does the wrong thing if you don't put it into CXXFLAGS. sigh.
+          dnl (It also needs it in CFLAGS, or it does a different wrong thing!)
           AS_IF([test "x${ac_cv_env_CXXFLAGS_set}" = "x"],[
             CXXFLAGS="${CXXFLAGS} -m64"
             ac_cv_env_CXXFLAGS_set=set
             ac_cv_env_CXXFLAGS_value='-m64'
           ])
 
+          AS_IF([test "x${ac_cv_env_CFLAGS_set}" = "x"],[
+            CFLAGS="${CFLAGS} -m64"
+            ac_cv_env_CFLAGS_set=set
+            ac_cv_env_CFLAGS_value='-m64'
+          ])
+
           AS_IF([test "$target_cpu" = "sparc" -a "x$SUNCC" = "xyes" ],[
             CXXFLAGS="-xmemalign=8s ${CXXFLAGS}"
           ])
diff --git a/m4/stl_hash.m4 b/m4/stl_hash.m4
index 912b954..08813c9 100644
--- a/m4/stl_hash.m4
+++ b/m4/stl_hash.m4
@@ -14,28 +14,45 @@ AC_DEFUN([AC_CXX_STL_HASH],
   [AC_MSG_CHECKING(the location of hash_map)
   AC_LANG_SAVE
    AC_LANG_CPLUSPLUS
-   ac_cv_cxx_hash_map=""
-   for location in ext/hash_map hash_map; do
-     for namespace in __gnu_cxx "" std stdext; do
-       if test -z "$ac_cv_cxx_hash_map"; then
-         AC_TRY_COMPILE([#include <$location>],
-                        [${namespace}::hash_map<int, int> t],
-                        [ac_cv_cxx_hash_map="<$location>";
-                         ac_cv_cxx_hash_namespace="$namespace";])
-       fi
+   ac_cv_cxx_hash_map_header=""
+   ac_cv_cxx_hash_map_class=""
+   for location in [tr1/unordered_map ext/hash_map hash_map]; do
+     for namespace in [std::tr1 __gnu_cxx "" std stdext]; do
+       for name in [unordered_map hash_map]; do
+
+         if test -z "$ac_cv_cxx_hash_map_header"; then
+
+           # On OSX 1.5 / GCC 4.0.1 (the standard compiler on that platform),
+           # calling find() on a const unordered_map does not compile.  So, we
+           # include a call to find() in our test to detect this broken
+           # implementation and avoid using it.  Note that ext/hash_map works
+           # fine on this platform, so we'll end up using that.
+           AC_TRY_COMPILE([#include <$location>],
+                          [const ${namespace}::$name<int, int> t;
+                           t.find(1);],
+                          [ac_cv_cxx_hash_map_header="<$location>";
+                           ac_cv_cxx_hash_namespace="$namespace";
+                           ac_cv_cxx_hash_map_class="$name";])
+         fi
+       done
      done
    done
-   ac_cv_cxx_hash_set=`echo "$ac_cv_cxx_hash_map" | sed s/map/set/`;
-   if test -n "$ac_cv_cxx_hash_map"; then
+   ac_cv_cxx_hash_set_header=`echo "$ac_cv_cxx_hash_map_header" | sed s/map/set/`;
+   ac_cv_cxx_hash_set_class=`echo "$ac_cv_cxx_hash_map_class" | sed s/map/set/`;
+   if test -n "$ac_cv_cxx_hash_map_header"; then
       AC_DEFINE(HAVE_HASH_MAP, 1, [define if the compiler has hash_map])
       AC_DEFINE(HAVE_HASH_SET, 1, [define if the compiler has hash_set])
-      AC_DEFINE_UNQUOTED(HASH_MAP_H,$ac_cv_cxx_hash_map,
+      AC_DEFINE_UNQUOTED(HASH_MAP_H,$ac_cv_cxx_hash_map_header,
                          [the location of <hash_map>])
-      AC_DEFINE_UNQUOTED(HASH_SET_H,$ac_cv_cxx_hash_set,
+      AC_DEFINE_UNQUOTED(HASH_SET_H,$ac_cv_cxx_hash_set_header,
                          [the location of <hash_set>])
+      AC_DEFINE_UNQUOTED(HASH_MAP_CLASS,$ac_cv_cxx_hash_map_class,
+                         [the name of <hash_set>])
+      AC_DEFINE_UNQUOTED(HASH_SET_CLASS,$ac_cv_cxx_hash_set_class,
+                         [the name of <hash_set>])
       AC_DEFINE_UNQUOTED(HASH_NAMESPACE,$ac_cv_cxx_hash_namespace,
                          [the namespace of hash_map/hash_set])
-      AC_MSG_RESULT([$ac_cv_cxx_hash_map])
+      AC_MSG_RESULT([$ac_cv_cxx_hash_map_header])
    else
       AC_MSG_RESULT()
       AC_MSG_WARN([could not find an STL hash_map])