compat.m4

   1 dnl  OpenVPN -- An application to securely tunnel IP networks
   2 dnl             over a single UDP port, with support for SSL/TLS-based
   3 dnl             session authentication and key exchange,
   4 dnl             packet encryption, packet authentication, and
   5 dnl             packet compression.
   6 dnl
   7 dnl  Copyright (C) 2008-2012 Alon Bar-Lev <alon.barlev@gmail.com>
   8 dnl
   9 dnl  This program is free software; you can redistribute it and/or modify
  10 dnl  it under the terms of the GNU General Public License as published by
  11 dnl  the Free Software Foundation; either version 2 of the License, or
  12 dnl  (at your option) any later version.
  13 dnl
  14 dnl  This program is distributed in the hope that it will be useful,
  15 dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 dnl  GNU General Public License for more details.
  18 dnl
  19 dnl  You should have received a copy of the GNU General Public License along
  20 dnl  with this program; if not, write to the Free Software Foundation, Inc.,
  21 dnl  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  22
  23 dnl Compatibility layer for <autoconf-2.60 <automake-1.10
  24 dnl REMOVE THIS IN FUTURE!
  25
  26 ifdef(
  27         [AS_VAR_IF],
  28         ,
  29         [
  30                 AC_DEFUN([AS_VAR_IF], [dnl
  31                         if test "$$1" = "$2"; then
  32                                 m4_ifval([$3], [$3], [:])
  33                         else
  34                                 m4_ifval([$4], [$4], [:])
  35                         fi
  36                 ])
  37         ]
  38 )
  39 ifdef(
  40         [AC_USE_SYSTEM_EXTENSIONS],
  41         ,
  42         [AC_DEFUN([AC_USE_SYSTEM_EXTENSIONS], [GNU_SOURCE])]
  43 )
  44 ifdef(
  45         [AC_PROG_SED],
  46         ,
  47         [AC_DEFUN([AC_PROG_SED], [AC_CHECK_PROGS([SED], [sed])])]
  48 )
  49 ifdef(
  50         [PKG_CHECK_VAR],
  51         ,
  52         [
  53                 AC_DEFUN([PKG_CHECK_VAR],
  54                 [AC_REQUIRE([PKG_PROG_PKG_CONFIG])
  55                 AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])
  56
  57                 _PKG_CONFIG([$1], [variable="][$3]["], [$2])
  58                 AS_VAR_COPY([$1], [pkg_cv_][$1])
  59
  60                 AS_VAR_IF([$1], [""], [$5], [$4])
  61                 ])
  62         ]
  63 )
  64
  65 if test -z "${docdir}"; then
  66         docdir="\$(datadir)/doc/\$(PACKAGE_NAME)"
  67         AC_SUBST([docdir])
  68 fi
  69 if test -z "${htmldir}"; then
  70         htmldir="\$(docdir)"
  71         AC_SUBST([htmldir])
  72 fi