folly/m4/ax_boost_regex.m4

   1 # ===========================================================================
   2 #      http://www.gnu.org/software/autoconf-archive/ax_boost_regex.html
   3 # ===========================================================================
   4 #
   5 # SYNOPSIS
   6 #
   7 #   AX_BOOST_REGEX
   8 #
   9 # DESCRIPTION
  10 #
  11 #   Test for Regex library from the Boost C++ libraries. The macro requires
  12 #   a preceding call to AX_BOOST_BASE. Further documentation is available at
  13 #   <http://randspringer.de/boost/index.html>.
  14 #
  15 #   This macro calls:
  16 #
  17 #     AC_SUBST(BOOST_REGEX_LIB)
  18 #
  19 #   And sets:
  20 #
  21 #     HAVE_BOOST_REGEX
  22 #
  23 # LICENSE
  24 #
  25 #   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
  26 #   Copyright (c) 2008 Michael Tindal
  27 #
  28 #   Copying and distribution of this file, with or without modification, are
  29 #   permitted in any medium without royalty provided the copyright notice
  30 #   and this notice are preserved. This file is offered as-is, without any
  31 #   warranty.
  32
  33 #serial 20
  34
  35 AC_DEFUN([AX_BOOST_REGEX],
  36 [
  37         AC_ARG_WITH([boost-regex],
  38         AS_HELP_STRING([--with-boost-regex@<:@=special-lib@:>@],
  39                    [use the Regex library from boost - it is possible to specify a certain library for the linker
  40                         e.g. --with-boost-regex=boost_regex-gcc-mt-d-1_33_1 ]),
  41         [
  42         if test "$withval" = "no"; then
  43                 want_boost="no"
  44         elif test "$withval" = "yes"; then
  45             want_boost="yes"
  46             ax_boost_user_regex_lib=""
  47         else
  48                     want_boost="yes"
  49                         ax_boost_user_regex_lib="$withval"
  50                                 fi
  51         ],
  52         [want_boost="yes"]
  53         )
  54
  55         if test "x$want_boost" = "xyes"; then
  56         AC_REQUIRE([AC_PROG_CC])
  57                 CPPFLAGS_SAVED="$CPPFLAGS"
  58                         CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
  59                                             export CPPFLAGS
  60
  61                                                    LDFLAGS_SAVED="$LDFLAGS"
  62                                                         LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
  63                                                                           export LDFLAGS
  64
  65         AC_CACHE_CHECK(whether the Boost::Regex library is available,
  66                                                            ax_cv_boost_regex,
  67         [AC_LANG_PUSH([C++])
  68                          AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[@%:@include <boost/regex.hpp>
  69                                                                                                                             ]],
  70                                    [[boost::regex r(); return 0;]])],
  71                    ax_cv_boost_regex=yes, ax_cv_boost_regex=no)
  72          AC_LANG_POP([C++])
  73                 ])
  74                         if test "x$ax_cv_boost_regex" = "xyes"; then
  75                                 AC_DEFINE(HAVE_BOOST_REGEX,,[define if the Boost::Regex library is available])
  76             BOOSTLIBDIR=`echo $BOOST_LDFLAGS | sed -e 's/@<:@^\/@:>@*//'`
  77             if test "x$ax_boost_user_regex_lib" = "x"; then
  78                 for libextension in `ls $BOOSTLIBDIR/libboost_regex*.so* $BOOSTLIBDIR/libboost_regex*.a* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^lib\(boost_regex.*\)\.so.*$;\1;' -e 's;^lib\(boost_regex.*\)\.a*$;\1;'` ; do
  79                      ax_lib=${libextension}
  80                                             AC_CHECK_LIB($ax_lib, exit,
  81                                  [BOOST_REGEX_LIB="-l$ax_lib"; AC_SUBST(BOOST_REGEX_LIB) link_regex="yes"; break],
  82                                  [link_regex="no"])
  83                                                         done
  84                 if test "x$link_regex" != "xyes"; then
  85                 for libextension in `ls $BOOSTLIBDIR/boost_regex*.{dll,a}* 2>/dev/null | sed 's,.*/,,' | sed -e 's;^\(boost_regex.*\)\.dll.*$;\1;' -e 's;^\(boost_regex.*\)\.a*$;\1;'` ; do
  86                      ax_lib=${libextension}
  87                                             AC_CHECK_LIB($ax_lib, exit,
  88                                  [BOOST_REGEX_LIB="-l$ax_lib"; AC_SUBST(BOOST_REGEX_LIB) link_regex="yes"; break],
  89                                  [link_regex="no"])
  90                                                         done
  91                 fi
  92
  93             else
  94                for ax_lib in $ax_boost_user_regex_lib boost_regex-$ax_boost_user_regex_lib; do
  95                                    AC_CHECK_LIB($ax_lib, main,
  96                                    [BOOST_REGEX_LIB="-l$ax_lib"; AC_SUBST(BOOST_REGEX_LIB) link_regex="yes"; break],
  97                                    [link_regex="no"])
  98                done
  99             fi
 100             if test "x$ax_lib" = "x"; then
 101                 AC_MSG_ERROR(Could not find a version of the Boost::Regex library!)
 102             fi
 103                         if test "x$link_regex" != "xyes"; then
 104                                                AC_MSG_ERROR(Could not link against $ax_lib !)
 105                                                                       fi
 106                                                                         fi
 107
 108                                                                                 CPPFLAGS="$CPPFLAGS_SAVED"
 109                                                                                 LDFLAGS="$LDFLAGS_SAVED"
 110                                                                                 fi
 111 ])