carrier-detect: Build-system refresh

Refresh the macro used in the build-system, rename configure.ac and
rewrite the Makefile.am.
Remove invocation of deprecated autotools macros.
Silence configure warnings and facilitate building from externalsrc.
Provide a standard .gitignore to make things more manageable.

Signed-off-by: Eric Chanudet <[email protected]>

Author: Eric Chanudet

carrier-detect/.gitignore

@@ -0,0 +1,36 @@
+## Autotools.
+# http://www.gnu.org/software/automake
+Makefile
+Makefile.in
+/ar-lib
+/mdate-sh
+/py-compile
+/test-driver
+/ylwrap
+
+# http://www.gnu.org/software/autoconf
+/autom4te.cache
+/autoscan.log
+/autoscan-*.log
+/aclocal.m4
+/compile
+/config.guess
+config.h
+config.h.in
+config.h.in~
+/config.sub
+/configure
+/configure.scan
+/depcomp
+/install-sh
+/missing
+stamp-h1
+/config.log
+/config.status
+
+## C.
+# Prerequisites
+*.d
+
+# Object files
+*.o

carrier-detect/Makefile.am

@@ -1,35 +1,10 @@
-#
-# Copyright (c) 2014 Citrix Systems, Inc.
-# 
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-# 
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-# 
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
-#
-
-#
-# Makefile.am:
-#
-# $Id:$
-#
-# $Log:$
-#
-#
-
-INCLUDES =  ${LIBNL_INC} ${LIBNL_ROUTE_INC}
-
-AM_CFLAGS=-g -W -Wall
-
 bin_PROGRAMS = carrier-detect
 
-carrier_detect_LDFLAGS = ${LIBNL_LIB} ${LIBNL_ROUTE_LIB}
+carrier_detect_CFLAGS = \
+	-g -W -Wall -Werror \
+	$(LIBNL_CFLAGS) \
+	$(LIBNL_ROUTE_CFLAGS)
 
+carrier_detect_LDADD = \
+	$(LIBNL_LIBS) \
+	$(LIBNL_ROUTE_LIBS)

carrier-detect/configure.ac

@@ -0,0 +1,41 @@
+#
+# Autoconf initialisation.
+#
+AC_INIT(carrier-detect, 1.0)
+AC_PREREQ(2.13)
+AM_INIT_AUTOMAKE([foreign -Wall -Werror])
+AC_CONFIG_MACRO_DIR([m4])
+
+#
+# Version management.
+# +1    : 0     Interface changes breaking retro-compatibility.
+# 0     : +1    Internal changes without lost of retro-compatibility.
+#
+VERSION_MAJOR=0
+VERSION_MINOR=1
+AC_DEFINE_UNQUOTED([VERSION_MAJOR], [$VERSION_MAJOR], [major version number])
+AC_DEFINE_UNQUOTED([VERSION_MINOR], [$VERSION_MINOR], [minor version number])
+
+#
+# Standard checks.
+#
+AC_PROG_CC
+AC_PROG_CPP
+AC_PROG_INSTALL
+AC_PROG_LN_S
+AC_PROG_MAKE_SET
+AM_PROG_AR
+
+# Compiler capabilities.
+AC_C_INLINE
+AC_C_CONST
+
+# Required headers.
+AC_CHECK_HEADERS([sys/mman.h stdio.h])
+
+# Required packages.
+PKG_CHECK_MODULES(LIBNL, [libnl-3.0])
+PKG_CHECK_MODULES(LIBNL_ROUTE, [libnl-route-3.0])
+
+# Output files.
+AC_OUTPUT([Makefile])