Initial fix of Libt2n.cmake.
[libt2n] / m4 / ax_boost_base.m4
CommitLineData
3d9c0861
TJ
1# ===========================================================================
2# http://autoconf-archive.cryp.to/ax_boost_base.html
3# ===========================================================================
4#
5# SYNOPSIS
6#
7# AX_BOOST_BASE([MINIMUM-VERSION])
8#
9# DESCRIPTION
10#
11# Test for the Boost C++ libraries of a particular version (or newer)
12#
13# If no path to the installed boost library is given the macro searchs
14# under /usr, /usr/local, /opt and /opt/local and evaluates the
15# $BOOST_ROOT environment variable. Further documentation is available at
16# <http://randspringer.de/boost/index.html>.
17#
18# This macro calls:
19#
20# AC_SUBST(BOOST_CPPFLAGS) / AC_SUBST(BOOST_LDFLAGS)
21#
22# And sets:
23#
24# HAVE_BOOST
25#
26# LAST MODIFICATION
27#
28# 2008-04-12
29#
30# COPYLEFT
31#
32# Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
33#
34# Copying and distribution of this file, with or without modification, are
35# permitted in any medium without royalty provided the copyright notice
36# and this notice are preserved.
37
38AC_DEFUN([AX_BOOST_BASE],
39[
40AC_ARG_WITH([boost],
41 AS_HELP_STRING([--with-boost@<:@=DIR@:>@], [use boost (default is yes) - it is possible to specify the root directory for boost (optional)]),
42 [
43 if test "$withval" = "no"; then
44 want_boost="no"
45 elif test "$withval" = "yes"; then
46 want_boost="yes"
47 ac_boost_path=""
48 else
49 want_boost="yes"
50 ac_boost_path="$withval"
51 fi
52 ],
53 [want_boost="yes"])
54
55
56AC_ARG_WITH([boost-libdir],
57 AS_HELP_STRING([--with-boost-libdir=LIB_DIR],
58 [Force given directory for boost libraries. Note that this will overwrite library path detection, so use this parameter only if default library detection fails and you know exactly where your boost libraries are located.]),
59 [
60 if test -d $withval
61 then
62 ac_boost_lib_path="$withval"
63 else
64 AC_MSG_ERROR(--with-boost-libdir expected directory name)
65 fi
66 ],
67 [ac_boost_lib_path=""]
68)
69
70if test "x$want_boost" = "xyes"; then
71 boost_lib_version_req=ifelse([$1], ,1.20.0,$1)
72 boost_lib_version_req_shorten=`expr $boost_lib_version_req : '\([[0-9]]*\.[[0-9]]*\)'`
73 boost_lib_version_req_major=`expr $boost_lib_version_req : '\([[0-9]]*\)'`
74 boost_lib_version_req_minor=`expr $boost_lib_version_req : '[[0-9]]*\.\([[0-9]]*\)'`
75 boost_lib_version_req_sub_minor=`expr $boost_lib_version_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
76 if test "x$boost_lib_version_req_sub_minor" = "x" ; then
77 boost_lib_version_req_sub_minor="0"
78 fi
79 WANT_BOOST_VERSION=`expr $boost_lib_version_req_major \* 100000 \+ $boost_lib_version_req_minor \* 100 \+ $boost_lib_version_req_sub_minor`
80 AC_MSG_CHECKING(for boostlib >= $boost_lib_version_req)
81 succeeded=no
82
83 dnl first we check the system location for boost libraries
84 dnl this location ist chosen if boost libraries are installed with the --layout=system option
85 dnl or if you install boost with RPM
86 if test "$ac_boost_path" != ""; then
87 BOOST_LDFLAGS="-L$ac_boost_path/lib"
88 BOOST_CPPFLAGS="-I$ac_boost_path/include"
89 else
90 for ac_boost_path_tmp in /usr /usr/local /opt /opt/local ; do
91 if test -d "$ac_boost_path_tmp/include/boost" && test -r "$ac_boost_path_tmp/include/boost"; then
92 BOOST_LDFLAGS="-L$ac_boost_path_tmp/lib"
93 BOOST_CPPFLAGS="-I$ac_boost_path_tmp/include"
94 break;
95 fi
96 done
97 fi
98
99 dnl overwrite ld flags if we have required special directory with
100 dnl --with-boost-libdir parameter
101 if test "$ac_boost_lib_path" != ""; then
102 BOOST_LDFLAGS="-L$ac_boost_lib_path"
103 fi
104
105 CPPFLAGS_SAVED="$CPPFLAGS"
106 CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
107 export CPPFLAGS
108
109 LDFLAGS_SAVED="$LDFLAGS"
110 LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
111 export LDFLAGS
112
113 AC_LANG_PUSH(C++)
114 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
115 @%:@include <boost/version.hpp>
116 ]], [[
117 #if BOOST_VERSION >= $WANT_BOOST_VERSION
118 // Everything is okay
119 #else
120 # error Boost version is too old
121 #endif
122 ]])],[
123 AC_MSG_RESULT(yes)
124 succeeded=yes
125 found_system=yes
126 ],[
127 ])
128 AC_LANG_POP([C++])
129
130
131
132 dnl if we found no boost with system layout we search for boost libraries
133 dnl built and installed without the --layout=system option or for a staged(not installed) version
134 if test "x$succeeded" != "xyes"; then
135 _version=0
136 if test "$ac_boost_path" != ""; then
137 if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
138 for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
139 _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
140 V_CHECK=`expr $_version_tmp \> $_version`
141 if test "$V_CHECK" = "1" ; then
142 _version=$_version_tmp
143 fi
144 VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
145 BOOST_CPPFLAGS="-I$ac_boost_path/include/boost-$VERSION_UNDERSCORE"
146 done
147 fi
148 else
149 for ac_boost_path in /usr /usr/local /opt /opt/local ; do
150 if test -d "$ac_boost_path" && test -r "$ac_boost_path"; then
151 for i in `ls -d $ac_boost_path/include/boost-* 2>/dev/null`; do
152 _version_tmp=`echo $i | sed "s#$ac_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
153 V_CHECK=`expr $_version_tmp \> $_version`
154 if test "$V_CHECK" = "1" ; then
155 _version=$_version_tmp
156 best_path=$ac_boost_path
157 fi
158 done
159 fi
160 done
161
162 VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
163 BOOST_CPPFLAGS="-I$best_path/include/boost-$VERSION_UNDERSCORE"
164 if test "$ac_boost_lib_path" = ""
165 then
166 BOOST_LDFLAGS="-L$best_path/lib"
167 fi
168
169 if test "x$BOOST_ROOT" != "x"; then
170 if test -d "$BOOST_ROOT" && test -r "$BOOST_ROOT" && test -d "$BOOST_ROOT/stage/lib" && test -r "$BOOST_ROOT/stage/lib"; then
171 version_dir=`expr //$BOOST_ROOT : '.*/\(.*\)'`
172 stage_version=`echo $version_dir | sed 's/boost_//' | sed 's/_/./g'`
173 stage_version_shorten=`expr $stage_version : '\([[0-9]]*\.[[0-9]]*\)'`
174 V_CHECK=`expr $stage_version_shorten \>\= $_version`
175 if test "$V_CHECK" = "1" -a "$ac_boost_lib_path" = "" ; then
176 AC_MSG_NOTICE(We will use a staged boost library from $BOOST_ROOT)
177 BOOST_CPPFLAGS="-I$BOOST_ROOT"
178 BOOST_LDFLAGS="-L$BOOST_ROOT/stage/lib"
179 fi
180 fi
181 fi
182 fi
183
184 CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
185 export CPPFLAGS
186 LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
187 export LDFLAGS
188
189 AC_LANG_PUSH(C++)
190 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
191 @%:@include <boost/version.hpp>
192 ]], [[
193 #if BOOST_VERSION >= $WANT_BOOST_VERSION
194 // Everything is okay
195 #else
196 # error Boost version is too old
197 #endif
198 ]])],[
199 AC_MSG_RESULT(yes)
200 succeeded=yes
201 found_system=yes
202 ],[
203 ])
204 AC_LANG_POP([C++])
205 fi
206
207 if test "$succeeded" != "yes" ; then
208 if test "$_version" = "0" ; then
209 AC_MSG_ERROR([[We could not detect the boost libraries (version $boost_lib_version_req_shorten or higher). If you have a staged boost library (still not installed) please specify \$BOOST_ROOT in your environment and do not give a PATH to --with-boost option. If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.]])
210 else
211 AC_MSG_NOTICE([Your boost libraries seems to old (version $_version).])
212 fi
213 else
214 AC_SUBST(BOOST_CPPFLAGS)
215 AC_SUBST(BOOST_LDFLAGS)
216 AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])
217 fi
218
219 CPPFLAGS="$CPPFLAGS_SAVED"
220 LDFLAGS="$LDFLAGS_SAVED"
221fi
222
223])