1 ,-------------------------------------------------.
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4 | | _ \ / _ \ / _ \/ __| __| | '_ ` _ \| || |_ |
5 | | |_) | (_) | (_) \__ \ |_ _| | | | | |__ _| |
6 | |____/ \___/ \___/|___/\__(_)_| |_| |_| |_| |
8 `-------------------------------------------------'
10 This package provides a set of M4 macros to use with Autoconf. The purpose
11 of these macros is to be able to easily find and test the various Boost
12 libraries of a given version for a given compiler. This package is released
18 1. If you have an invocation of AC_CONFIG_AUX_DIR in your configure.ac, then
19 copy build-aux/boost.m4 in the directory specified by AC_CONFIG_AUX_DIR.
20 Otherwise, copy the file at the root of your project.
21 2. In your top-level Makefile.am (this supposes that you use automake, which
22 you most likely do) add:
23 ACLOCAL_AMFLAGS = -I <dir>
24 where `<dir>' is the (relative) path to the directory where you copied
25 boost.m4 (set it to `.' if you put boost.m4 in the same, top-level
27 3. Add a call to BOOST_REQUIRE to your configure.ac as well as other calls to
28 the various BOOST_* macros that check for the libraries you need.
29 4. Adjust your Makefile.am where you build targets that depend on Boost so
30 that they use $(BOOST_CPPFLAGS), $(BOOST_*_LDFLAGS) and $(BOOST_*_LIBS)
31 where appropriate (where `*' is the capitalized name of one of the
32 libraries you checked for, e.g.: $(BOOST_THREADS_LDFLAGS)). E.g.:
35 foo_CPPFLAGS = $(BOOST_CPPFLAGS)
36 foo_LDFLAGS = $(BOOST_THREAD_LDFLAGS)
37 foo_LIBS = $(BOOST_THREAD_LIBS)
38 Or if you have more than one target in the same Makefile.am and your
39 targets don't have per-target specific flags (such as foo_LIBS) and you
40 want all your targets to use the same set of Boost libraries, you can do
41 the following instead:
42 bin_PROGRAMS = foo bar
45 AM_CPPFLAGS = $(BOOST_CPPFLAGS)
46 AM_LDFLAGS = $(BOOST_THREADS_LDFLAGS)
47 LIBS = $(BOOST_THREAD_LIBS)
48 Remember that for targets that are programs, you must use LIBS or
49 progname_LIBS, but for libraries you must use LDADD or libname_LDADD.
53 This section documents the various macros provided by boost.m4.
55 BOOST_REQUIRE([VERSION])
56 ~~~~~~~~~~~~~~~~~~~~~~~~
57 The first, most important macro, is BOOST_REQUIRE. You should invoke it
58 before other BOOST_* macros if you want to check that Boost has a minimum
61 Here are some examples:
62 # Do not require any specific minimum version
64 # Require at least 1.34.1
65 BOOST_REQUIRE([1.34.1])
66 # Require a version number known at runtime
67 BOOST_REQUIRE([$some_shell_variable])
69 This macro defines the Make symbol BOOST_CPPFLAGS.
72 There are various predefined macros to check for common Boost libraries.
73 They are ordered in two categories: the Boost libraries that are only made of
74 headers, and the Boost libraries that (may) require linking to an installed
77 Header-only Boost libraries
78 ~~~~~~~~~~~~~~~~~~~~~~~~~~~
79 For each of the Boost libraries that are only made of headers, the macro to
80 invoke is BOOST_<LIB-NAME> where <LIB-NAME> is the capitalized name of the
81 library. Here is the list of libraries for which checks have been
92 Thus you can invoke BOOST_FOREACH (for instance). It will check that
93 <boost/foreach.hpp> works and define the preprocessor symbol
94 HAVE_BOOST_FOREACH_HPP. For each of the libraries mentioned above, a couple
95 of headers are checked (the most important ones) and preprocessor symbols are
96 defined in an identical fashion.
97 If the check fails, configure with abort with a fatal error.
99 Boost libraries requiring linking
100 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
101 For the other Boost libraries that (may) requiring linking to an installed
102 library (shared or not), the macro to invoke is BOOST_<LIB-NAME> (surprise!)
103 but this time the macro can take an optional argument to specify the runtime
104 options you'd like to have. Most of the time, Boost libraries are compiled
105 in several flavors, such as with or without debug, with a multi-thread
106 runtime or not, etc. The macro will try to find a library that match your
107 requirements but may fall back to another flavor of the library if the one you
108 asked for isn't available.
109 The following libraries are supported:
113 Thus you can invoke BOOST_GRAPH (for instance) or BOOST_THREADS([mt-d]).
114 The optional argument is made of one or more of the following letters:
115 sgdpn (in that order)
119 g = debug/diagnostic runtime
121 n = (unsure) STLPort build without iostreams from STLPort
122 (it looks like `n' must always be used along with `p').
123 Additionally, it can start with `mt-' to indicate that there is a preference
124 for multi-thread builds.
126 If the check is successful, at least one header has been checked and the
127 corresponding preprocessor symbol HAVE_BOOST_*_HPP is defined, along with the
128 compilation flags BOOST_<LIB-NAME>_LDFLAGS and BOOST_<LIB-NAME>_LIBS.
130 Writing your own checks / supporting more Boost libraries
131 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
132 All the pre-existing library checks are written with help of
133 BOOST_FIND_HEADER and BOOST_FIND_LIB. These two macros are very easy to use
134 and are documented in boost.m4. Reading their documentation and reading the
135 existing library checks should help you to easily write your own additional
136 checks. Please contribute them to me by email to <tsuna at lrde.epita.fr>.
138 You can checkout the Git source tree of this package at
139 http://repo.or.cz/w/boost.m4.git
140 Or simply download the latest version:
141 wget 'http://repo.or.cz/w/boost.m4.git?a=blob_plain;f=build-aux/boost.m4;hb=HEAD' -O boost.m4