m4/libupnp.m4

   1 #                                                       -*- Autoconf -*-
   2 # This file is part of the aMule project.
   3 # This file is part of the libupnp library project.
   4 #
   5 # Copyright (c) 2003-2011 aMule Team ( admin@amule.org / http://www.amule.org )
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  20 #
  21
  22 dnl --------------------------------------------------------------------------
  23 dnl LIBUPNP_CHECK([VERSION = 1.6.6], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
  24 dnl
  25 dnl Check for the libupnp library
  26 dnl --------------------------------------------------------------------------
  27 dnl
  28 dnl This macro sets these variables:
  29 dnl - LIBUPNP_VERSION
  30 dnl     Something like "1.6.7"
  31 dnl - LIBUPNP_CPPFLAGS
  32 dnl     Flags to be added to CPPFLAGS
  33 dnl - LIBUPNP_CFLAGS
  34 dnl     Flags to be added to CFLAGS
  35 dnl - LIBUPNP_LDFLAGS
  36 dnl     Flags to be added to LDFLAGS
  37 dnl - LIBUPNP_LIBS
  38 dnl     Library to be added to LIBS
  39 dnl
  40 dnl The LIBUPNP_CPPFLAGS, LIBUPNP_CFLAGS, LIBUPNP_LDFLAGS and LIBUPNP_LIBS variables are also substituted.
  41 dnl
  42 AC_DEFUN([LIBUPNP_CHECK],
  43 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
  44 m4_define([MIN_LIBUPNP_VERSION], [m4_ifval([$1], [$1], [1.6.6])])dnl
  45
  46 dnl     Test for --with-libupnp-prefix
  47         AC_ARG_WITH(
  48                 [libupnp-prefix],
  49                 [AS_HELP_STRING(
  50                         [--with-libupnp-prefix=PREFIX],
  51                         [UPnP library location])],
  52                 [export PKG_CONFIG_PATH=$withval/lib/pkgconfig])
  53
  54 dnl     Check for libupnp >= MIN_LIBUPNP_VERSION
  55         AS_IF([test $cross_compiling = no], [
  56                 AC_MSG_CHECKING([for libupnp version >= MIN_LIBUPNP_VERSION])
  57                 AS_IF([test -n "$PKG_CONFIG"], [
  58                         AS_IF([$PKG_CONFIG libupnp --exists], [
  59                                 LIBUPNP_VERSION=`$PKG_CONFIG libupnp --modversion`
  60                                 AS_IF([$PKG_CONFIG libupnp --atleast-version=MIN_LIBUPNP_VERSION], [
  61                                         result=yes
  62                                         resultstr=" (version $LIBUPNP_VERSION)"
  63                                         LIBUPNP_CPPFLAGS=`$PKG_CONFIG libupnp --cflags-only-I`
  64                                         LIBUPNP_CFLAGS=`$PKG_CONFIG libupnp --cflags-only-other`
  65                                         LIBUPNP_LDFLAGS=`$PKG_CONFIG libupnp --libs-only-L`
  66                                         LIBUPNP_LIBS=`$PKG_CONFIG libupnp --libs-only-other`
  67                                         LIBUPNP_LIBS="$LIBUPNP_LIBS `$PKG_CONFIG libupnp --libs-only-l`"
  68                                 ], [
  69                                         result=no
  70                                         resultstr=" (version $LIBUPNP_VERSION is not new enough)"
  71                                 ])
  72                         ], [
  73                                 result=no
  74                                 resultstr=" (try to use --with-libupnp-prefix=PREFIX)"
  75                         ])
  76                 ], [
  77                         result=no
  78                         resultstr=" (pkg-config not found)"
  79                 ])
  80                 AC_MSG_RESULT([$result$resultstr])
  81                 libupnp_error="libupnp >= MIN_LIBUPNP_VERSION not found$resultstr"
  82         ], [
  83 dnl Currently cross-compilation with libupnp is not supported.
  84                 result=no
  85                 libupnp_error="cross compiling"
  86         ])
  87
  88 dnl     Execute the right action.
  89         AS_IF([test ${result:-no} = yes], [$2], [$3])
  90
  91 dnl Exported symbols
  92 AC_SUBST([LIBUPNP_CPPFLAGS])dnl
  93 AC_SUBST([LIBUPNP_CFLAGS])dnl
  94 AC_SUBST([LIBUPNP_LDFLAGS])dnl
  95 AC_SUBST([LIBUPNP_LIBS])dnl
  96 m4_undefine([MIN_LIBUPNP_VERSION])dnl
  97 ])