[PATCH 2/2] build: replace outdated autotools calls

[Jan Engelhardt <jengelh@inai.de>]

These old forms have been long long deprecated and start causing
more and more warnings.

configure.ac:4: warning: AM_INIT_AUTOMAKE: two- and three-arguments
forms are deprecated. For more info, see:
http://www.gnu.org/software/automake/manual/automake.html#Modernize-AM_005fINIT_005fAUTOMAKE-invocation
---
 autogen.sh   | 11 ++---------
 configure.ac |  5 +++--
 2 files changed, 5 insertions(+), 11 deletions(-)

diff --git a/autogen.sh b/autogen.sh
index 6b7dc9c..23f8b72 100755
--- a/autogen.sh
+++ b/autogen.sh
@@ -1,10 +1,3 @@
 #! /bin/sh
-#This file is part of the GP2C package (SVN only)
-#
-#This very stupid shell script is Public Domain.
-
-aclocal || { echo "You must have autoconf to proceed. Sorry.";exit 1; }
-autoconf || { echo "You must have autoconf to proceed. Sorry.";exit 1; }
-autoheader || { echo "You must have autoconf to proceed. Sorry.";exit 1; }
-automake -a || { echo "You must have automake to proceed. Sorry.";exit 1; }
-CFLAGS="-O2 -g -Wall" ./configure --enable-maintainer-mode $*
+autoreconf -fi
+CFLAGS="-O2 -g -Wall" ./configure --enable-maintainer-mode "$@"
diff --git a/configure.ac b/configure.ac
index 6857ce7..6d20c75 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,8 @@
 dnl Process this file with autoconf to produce a configure script.
-AC_INIT(src/gp2c.c)
+AC_INIT([gp2c], [0.0.8pl1])
+AC_CONFIG_SRCDIR([src/gp2c.c])
 AC_CONFIG_AUX_DIR(config)
-AM_INIT_AUTOMAKE(gp2c,0.0.8pl1)
+AM_INIT_AUTOMAKE([-Wall foreign subdir-objects tar-pax])
 AM_MAINTAINER_MODE dnl Be nice with packagers.
 AM_CONFIG_HEADER(src/config.h)
 dnl AC_PREFIX_PROGRAM(gp)
-- 
1.8.4.5