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#
# configure.in
#
# 	This library is free software; you can redistribute it and/or
#	modify it under the terms of the GNU Lesser General Public
#	License as published by the Free Software Foundation version 2.1
#	of the License.
#
# Copyright (c) 2003-2012 Thomas Graf <tgraf@suug.ch>
#


# copied from glib
m4_define([libnl_major_version], [3])
m4_define([libnl_minor_version], [2])
m4_define([libnl_micro_version], [4]) # bump for every release unless minor was bumped
m4_define([libnl_lt_revision],	 [0]) # bump or reset to 0 if interfaces were added
m4_define([libnl_lt_age],	 [4]) # bump whenever a release is backwards compatible
                                      # bump with +100 if a minor release is compatible
				      # reset to 0 if interfaces were removed

m4_define([libnl_version],
	  [libnl_major_version.libnl_minor_version.libnl_micro_version])

m4_define([libnl_lt_current],
	  [m4_eval(100 * libnl_minor_version + libnl_micro_version - libnl_lt_revision)])

AC_INIT(libnl, [libnl_version], [http://www.infradead.org/~tgr/libnl/])
AC_CONFIG_HEADERS([lib/defs.h])
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([-Wall foreign subdir-objects])
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES(yes)], [])

MAJ_VERSION=libnl_major_version
AC_SUBST(MAJ_VERSION)
MIN_VERSION=libnl_minor_version
AC_SUBST(MIN_VERSION)
MIC_VERSION=libnl_micro_version
AC_SUBST(MIC_VERSION)
LIBNL_VERSION=libnl_version
AC_SUBST(LIBNL_VERSION)

LT_CURRENT=libnl_lt_current
AC_SUBST(LT_CURRENT)
LT_REVISION=libnl_lt_revision
AC_SUBST(LT_REVISION)
LT_AGE=libnl_lt_age
AC_SUBST(LT_AGE)

AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_INSTALL
AM_PROG_LIBTOOL
AM_PROG_LEX
AC_PROG_YACC

AC_C_CONST
AC_C_INLINE

AC_ARG_WITH([pkgconfigdir], AS_HELP_STRING([--with-pkgconfigdir=PATH],
	[Path to the pkgconfig directory [[LIBDIR/pkgconfig]]]),
	[pkgconfigdir="$withval"], [pkgconfigdir='${libdir}/pkgconfig'])
AC_SUBST([pkgconfigdir])

AC_ARG_ENABLE([cli],
	AS_HELP_STRING([--disable-cli], [Do not build command line interface utils]),
	[enable_cli="$enableval"], [enable_cli="yes"])
AM_CONDITIONAL([ENABLE_CLI], [test "$enable_cli" = "yes"])

AC_CHECK_LIB([m], [pow], [], AC_MSG_ERROR([libm is required]))
AC_CHECK_LIB([pthread], [pthread_mutex_lock], [], AC_MSG_ERROR([libpthread is required]))

AC_CONFIG_FILES([
Makefile
libnl-3.0.pc
libnl-route-3.0.pc
libnl-genl-3.0.pc
libnl-nf-3.0.pc
libnl-cli-3.0.pc
doc/Doxyfile
doc/Makefile
lib/Makefile
include/Makefile
src/Makefile
src/lib/Makefile
man/Makefile
python/Makefile
python/setup.py
python/netlink/Makefile
python/netlink/route/Makefile
include/netlink/version.h
])

AC_OUTPUT

echo "-------------------------------------------------------------------------------"
echo "                                  NOTE"
echo ""
echo " There have been some changes starting with 3.2 regarding where and how libnl"
echo " is being installed on the system in order to allow multiple libnl versions"
echo " to be installed in parallel:"
echo ""
echo "    - Headers will be installed in ${includedir}/libnl${MAJ_VERSION}, therefore"
echo "      you will need to add \"-I/usr/include/libnl${MAJ_VERSION}\" to CFLAGS"
echo ""
echo "    - The library basename was renamed to libnl-${MAJ_VERSION}, i.e. the SO names become"
echo "      libnl-${MAJ_VERSION}.so., libnl-route-${MAJ_VERSION}.so, etc."
echo ""
echo "    - libtool versioning was assumed, to ease detection of compatible library"
echo "      versions. libnl-${MAJ_VERSION}.so.CURRENT.REVISION.AGE where."
echo "          CURRENT  := 100 * \$MINOR_VERSION + \$MICRO_VERSION"
echo "          REVISION := nth revision if API was unchanged"
echo "          AGE      := nth revision that is backwards compatible."
echo ""
echo " If you are using pkg-config for detecting and linking against the library "
echo " things will continue magically as if nothing every happened. If you are "
echo " linking manually you need to adapt your Makefiles or switch to using "
echo " pkg-config files."
echo ""
echo "-------------------------------------------------------------------------------"