1
# Copyright (C) 2008 Sun Microsystems, Inc.
2
# This file is free software; Sun Microsystems, Inc.
3
# gives unlimited permission to copy and/or distribute it,
4
# with or without modifications, as long as this notice is preserved.
6
# We check two things: where the include file is for unordered_map, and
7
# what namespace unordered_map lives in within that include file. We
1
# We check two things: where the include file is for hash_map, and
2
# what namespace hash_map lives in within that include file. We
8
3
# include AC_COMPILE_IFELSE for all the combinations we've seen in the
9
# wild. We define HAVE_UNORDERED_MAP and HAVE_UNORDERED_SET if we have
10
# them, UNORDERED_MAP_H and UNORDERED_SET_H to their location and
11
# UNORDERED_NAMESPACE to be the namespace unordered_map is defined in.
13
AC_DEFUN([PANDORA_CXX_STL_UNORDERED],[
14
save_CXXFLAGS="${CXXFLAGS}"
15
CXXFLAGS="${AM_CXXFLAGS} ${CXXFLAGS}"
17
AC_CACHE_CHECK([for STL unordered_map],
18
[pandora_cv_stl_unordered],[
20
[AC_LANG_PROGRAM([[#include <unordered_map>]],
21
[[std::unordered_map<int, int> t]])],
22
[pandora_cv_stl_unordered="yes"],
23
[pandora_cv_stl_unordered="no"])])
25
AS_IF([test "x${pandora_cv_stl_unordered}" != "xyes"],[
26
AC_CACHE_CHECK([for tr1 unordered_map],
27
[pandora_cv_tr1_unordered],[
30
/* We put in this define because of a YACC symbol clash in Drizzle.
31
Seriously... I cannot believe the GCC guys defined a piece of the internals
32
of this named IF - and I can't believe that YACC generates a token define
36
#include <tr1/unordered_map>
38
std::tr1::unordered_map<int, int> t
40
[pandora_cv_tr1_unordered="yes"],
41
[pandora_cv_tr1_unordered="no"])])
44
AS_IF([test "x${pandora_cv_stl_unordered}" != "xyes" -a "x${pandora_cv_tr1_unordered}" != "xyes"],[
45
AC_CACHE_CHECK([for boost unordered_map],
46
[pandora_cv_boost_unordered],[
48
[AC_LANG_PROGRAM([[#include <boost/unordered_map.hpp>]],
49
[[boost::unordered_map<int, int> t]])],
50
[pandora_cv_boost_unordered="yes"],
51
[pandora_cv_boost_unordered="no"])])
54
CXXFLAGS="${save_CXXFLAGS}"
57
AS_IF([test "x${pandora_cv_stl_unordered}" = "xyes"],[
58
AC_DEFINE(HAVE_STD_UNORDERED_MAP, 1,
59
[if the compiler has std::unordered_map])
60
AC_DEFINE(HAVE_STD_UNORDERED_SET, 1,
61
[if the compiler has std::unordered_set])
62
pandora_has_unordered=yes
64
AS_IF([test "x${pandora_cv_tr1_unordered}" = "xyes"],[
65
AC_DEFINE(HAVE_TR1_UNORDERED_MAP, 1,
66
[if the compiler has std::tr1::unordered_map])
67
AC_DEFINE(HAVE_TR1_UNORDERED_SET, 1,
68
[if the compiler has std::tr1::unordered_set])
69
pandora_has_unordered=yes
71
AS_IF([test "x${pandora_cv_boost_unordered}" = "xyes"],[
72
AC_DEFINE(HAVE_BOOST_UNORDERED_MAP, 1,
73
[if the compiler has boost::unordered_map])
74
AC_DEFINE(HAVE_BOOST_UNORDERED_SET, 1,
75
[if the compiler has boost::unordered_set])
76
pandora_has_unordered=yes
79
AS_IF([test "x${pandora_has_unordered}" != "xyes"],[
80
AC_MSG_WARN([could not find an STL unordered_map])
84
AC_DEFUN([PANDORA_HAVE_CXX_UNORDERED],[
85
AC_REQUIRE([PANDORA_CXX_STL_UNORDERED])
88
AC_DEFUN([PANDORA_REQUIRE_CXX_UNORDERED],[
89
AC_REQUIRE([PANDORA_HAVE_CXX_UNORDERED])
90
AS_IF([test "x${pandora_has_unordered}" != "xyes"],[
91
AC_MSG_ERROR([An STL compliant unordered_map is required for ${PACKAGE}.
92
Implementations can be found in Recent versions of gcc and in boost])
4
# wild. We define one of HAVE_HASH_MAP or HAVE_EXT_HASH_MAP depending
5
# on location, and HASH_NAMESPACE to be the namespace hash_map is
8
# Ideally we'd use AC_CACHE_CHECK, but that only lets us store one value
9
# at a time, and we need to store two (filename and namespace).
10
# prints messages itself, so we have to do the message-printing ourselves
11
# via AC_MSG_CHECKING + AC_MSG_RESULT. (TODO(csilvers): can we cache?)
13
AC_DEFUN([PANDORA_CXX_STL_HASH],
14
[AC_MSG_CHECKING(the location of hash_map)
17
for location in "" "ext/" "tr1/" ; do
18
for namespace in __gnu_cxx "" std stdext; do
19
for classprefix in unordered hash; do
20
if test -z "$ac_cv_cxx_hash_map"; then
22
[AC_LANG_PROGRAM([[#include <${location}${classprefix}_map>]],
23
[[${namespace}::${classprefix}_map<int, int> t]])],
24
[ac_cv_cxx_hash_map="<${location}${classprefix}_map>";
25
ac_cv_cxx_hash_set="<${location}${classprefix}_set>";
26
ac_cv_cxx_hash_namespace="$namespace";
27
ac_cv_cxx_hash_map_class="${classprefix}_map";
28
ac_cv_cxx_hash_set_class="${classprefix}_set"])
35
if test -n "$ac_cv_cxx_hash_map"; then
36
AC_DEFINE(HAVE_HASH_MAP, 1, [define if the compiler has hash_map])
37
AC_DEFINE(HAVE_HASH_SET, 1, [define if the compiler has hash_set])
38
AC_DEFINE_UNQUOTED(HASH_MAP_H,$ac_cv_cxx_hash_map,
39
[the location of <hash_map>])
40
AC_DEFINE_UNQUOTED(HASH_SET_H,$ac_cv_cxx_hash_set,
41
[the location of <hash_set>])
42
AC_DEFINE_UNQUOTED(HASH_NAMESPACE,$ac_cv_cxx_hash_namespace,
43
[the namespace of hash_map/hash_set])
44
AC_DEFINE_UNQUOTED(HASH_MAP_CLASS,$ac_cv_cxx_hash_map_class,
45
[the classname of hash_map])
46
AC_DEFINE_UNQUOTED(HASH_SET_CLASS,$ac_cv_cxx_hash_set_class,
47
[the classname of hash_set])
48
AC_MSG_RESULT([$ac_cv_cxx_hash_map])
51
AC_MSG_WARN([could not find an STL hash_map])
54
[whether hash_map has rehash method],
55
[ac_cv_hash_map_has_rehash],
59
using namespace HASH_NAMESPACE;
61
HASH_MAP_CLASS<int, int> test_hash;
62
test_hash.rehash(100);
64
[ac_cv_hash_map_has_rehash=yes],
65
[ac_cv_hash_map_has_rehash=no])])
66
AS_IF([test $ac_cv_hash_map_has_rehash = yes],[
67
AC_DEFINE(HASH_MAP_HAS_REHASH, 1, [if hash_map<> hash rehash method])
70
[whether hash_map has resize method],
71
[ac_cv_hash_map_has_resize],
75
using namespace HASH_NAMESPACE;
77
HASH_MAP_CLASS<int, int> test_hash;
78
test_hash.resize(100);
80
[ac_cv_hash_map_has_resize=yes],
81
[ac_cv_hash_map_has_resize=no])])
82
AS_IF([test $ac_cv_hash_map_has_resize = yes],[
83
AC_DEFINE(HASH_MAP_HAS_RESIZE, 1, [if hash_map<> hash resize method])
86
[whether to redefine hash<string>],
87
[ac_cv_redefine_hash_string],
92
using namespace HASH_NAMESPACE;
95
string teststr("test");
96
HASH_SET_CLASS<string> test_hash;
97
HASH_SET_CLASS<string>::iterator iter= test_hash.find(teststr);
98
if (iter != test_hash.end())
101
[ac_cv_redefine_hash_string=no],
102
[ac_cv_redefine_hash_string=yes])])
103
AS_IF([test $ac_cv_redefine_hash_string = yes],[
104
AC_DEFINE(REDEFINE_HASH_STRING, 1, [if hash<string> needs to be defined])