folly/m4/ax_boost_filesystem.m4

   1 # ===========================================================================
   2 #    http://www.gnu.org/software/autoconf-archive/ax_boost_filesystem.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_BOOST_FILESYSTEM
   8 #
   9 # DESCRIPTION
  10 #
  11 #   Test for Filesystem library from the Boost C++ libraries. The macro
  12 #   requires a preceding call to AX_BOOST_BASE. Further documentation is
  13 #   available at <http://randspringer.de/boost/index.html>.
  14 #
  15 #   This macro calls:
  16 #
  17 #     AC_SUBST(BOOST_FILESYSTEM_LIB)
  18 #
  19 #   And sets:
  20 #
  21 #     HAVE_BOOST_FILESYSTEM
  22 #
  23 # LICENSE
  24 #
  25 #   Copyright (c) 2009 Thomas Porschberg <thomas@randspringer.de>
  26 #   Copyright (c) 2009 Michael Tindal
  27 #   Copyright (c) 2009 Roman Rybalko <libtorrent@romanr.info>
  28 #
  29 #   Copying and distribution of this file, with or without modification, are
  30 #   permitted in any medium without royalty provided the copyright notice
  31 #   and this notice are preserved. This file is offered as-is, without any
  32 #   warranty.
  33
  34 #serial 26
  35
  36 AC_DEFUN([AX_BOOST_FILESYSTEM],
  37 [
  38         AC_ARG_WITH([boost-filesystem],
  39         AS_HELP_STRING([--with-boost-filesystem@<:@=special-lib@:>@],
  40                    [use the Filesystem library from boost - it is possible to specify a certain library for the linker
  41                         e.g. --with-boost-filesystem=boost_filesystem-gcc-mt ]),
  42         [
  43         if test "$withval" = "no"; then
  44                 want_boost="no"
  45         elif test "$withval" = "yes"; then
  46             want_boost="yes"
  47             ax_boost_user_filesystem_lib=""
  48         else
  49                     want_boost="yes"
  50                         ax_boost_user_filesystem_lib="$withval"
  51                                 fi
  52         ],
  53         [want_boost="yes"]
  54         )
  55
  56         if test "x$want_boost" = "xyes"; then
  57         AC_REQUIRE([AC_PROG_CC])
  58                 CPPFLAGS_SAVED="$CPPFLAGS"
  59                         CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
  60                                             export CPPFLAGS
  61
  62                                                    LDFLAGS_SAVED="$LDFLAGS"
  63                                                         LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
  64                                                                           export LDFLAGS
  65
  66                                                                                  LIBS_SAVED=$LIBS
  67                                                                                         LIBS="$LIBS $BOOST_SYSTEM_LIB"
  68                                                                                                     export LIBS
  69
  70         AC_CACHE_CHECK(whether the Boost::Filesystem library is available,
  71                                                                 ax_cv_boost_filesystem,
  72         [AC_LANG_PUSH([C++])
  73          AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/filesystem/path.hpp>]],
  74                                    [[using namespace boost::filesystem;
  75                                    path my_path( "foo/bar/data.txt" );
  76                                    return 0;]])],
  77                                                                        ax_cv_boost_filesystem=yes, ax_cv_boost_filesystem=no)
  78          AC_LANG_POP([C++])
  79                 ])
  80                         if test "x$ax_cv_boost_filesystem" = "xyes"; then
  81                                 AC_DEFINE(HAVE_BOOST_FILESYSTEM,,[define if the Boost::Filesystem library is available])
  82             BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
  83             if test "x$ax_boost_user_filesystem_lib" = "x"; then
  84                 for libextension in `ls -r $BOOSTLIBDIR/libboost_filesystem* 2>/dev/null | sed 's,.*/lib,,' | sed 's,\..*,,'` ; do
  85                      ax_lib=${libextension}
  86                                             AC_CHECK_LIB($ax_lib, exit,
  87                                  [BOOST_FILESYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_FILESYSTEM_LIB) link_filesystem="yes"; break],
  88                                  [link_filesystem="no"])
  89                                                         done
  90                 if test "x$link_filesystem" != "xyes"; then
  91                 for libextension in `ls -r $BOOSTLIBDIR/boost_filesystem* 2>/dev/null | sed 's,.*/,,' | sed -e 's,\..*,,'` ; do
  92                      ax_lib=${libextension}
  93                                             AC_CHECK_LIB($ax_lib, exit,
  94                                  [BOOST_FILESYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_FILESYSTEM_LIB) link_filesystem="yes"; break],
  95                                  [link_filesystem="no"])
  96                                                         done
  97                                                                     fi
  98             else
  99                for ax_lib in $ax_boost_user_filesystem_lib boost_filesystem-$ax_boost_user_filesystem_lib; do
 100                                    AC_CHECK_LIB($ax_lib, exit,
 101                                    [BOOST_FILESYSTEM_LIB="-l$ax_lib"; AC_SUBST(BOOST_FILESYSTEM_LIB) link_filesystem="yes"; break],
 102                                    [link_filesystem="no"])
 103                   done
 104
 105             fi
 106             if test "x$ax_lib" = "x"; then
 107                 AC_MSG_ERROR(Could not find a version of the library!)
 108             fi
 109                         if test "x$link_filesystem" != "xyes"; then
 110                                                     AC_MSG_ERROR(Could not link against $ax_lib !)
 111                                                                            fi
 112                                                                                 fi
 113
 114                                                                                         CPPFLAGS="$CPPFLAGS_SAVED"
 115                                                                                                 LDFLAGS="$LDFLAGS_SAVED"
 116                                                                                                         LIBS="$LIBS_SAVED"
 117                                                                                                         fi
 118 ])