Fix buildsystem, to avoid ugly and extremely brittle patching
of the configure script and Makefile.in in the main ebuild.

--- a/configure.in
+++ b/configure.in
@@ -1,8 +1,8 @@
+AC_PREREQ([2.69])
+AC_INIT([fampp2],[7.0.1])
 
-# require autoconf 2.13
-AC_PREREQ(2.13)
-
-AC_INIT(src/Fampp2.hh)
+AC_CONFIG_MACRO_DIR([macros])
+AC_CONFIG_SRCDIR([src/Fampp2.hh])
 
 FAMPPTWO_MAJOR=7
 FAMPPTWO_MINOR=0
@@ -22,9 +22,8 @@
 VERSION=$FAMPP_VERSION
 PACKAGE=fampp2
 
-AM_CONFIG_HEADER(config.h)
-AM_INIT_AUTOMAKE($PACKAGE, $VERSION)
-AM_MAINTAINER_MODE
+AC_CONFIG_HEADERS([config.h])
+AM_INIT_AUTOMAKE
 
 AC_CANONICAL_HOST
 AC_ISC_POSIX
@@ -33,11 +32,7 @@
 AC_PROG_CPP
 AC_PROG_CXX
 
-AC_STDC_HEADERS
-#AC_ARG_PROGRAM
-AC_DISABLE_FAST_INSTALL
-AC_DISABLE_STATIC
-AM_PROG_LIBTOOL
+LT_INIT
 
 
 dnl Checks for libraries.
@@ -58,15 +53,12 @@
 ###############################################################################
 
 
-CFLAGS=" $STLPORT_CFLAGS $LOKI_CFLAGS $SIGC_CFLAGS $CFLAGS -O0 -g  "
-CXXFLAGS=" $STLPORT_CFLAGS  $CXXFLAGS -O0 -g $LOKI_LIBS $SIGC_CFLAGS  "
-LDFLAGS=" $STLPORT_LIBS $SIGC_LIBS $LDFLAGS  -Wl,-O1 -Wl,--hash-style=both"
-AC_SUBST(CFLAGS)
-AC_SUBST(CPPFLAGS)
-AC_SUBST(LDFLAGS)
-AC_SUBST(CXXFLAGS)
-AC_SUBST(CXXCPPFLAGS)
+CFLAGS="${CFLAGS} ${STLPORT_CFLAGS} ${LOKI_CFLAGS} ${SIGC_CFLAGS}"
+CXXFLAGS="${CXXFLAGS} ${STLPORT_CFLAGS} ${LOKI_CFLAGS} ${SIGC_CFLAGS}"
+LIBS="${LIBS} ${STLPORT_LIBS} ${LOKI_LIBS} ${SIGC_LIBS}"
 
+AC_ARG_WITH([examples], [install examples])
+AM_CONDITIONAL([EXAMPLES], [test "x$with_examples" = "xyes"])
 
 dnl if test "x${prefix}" = 'xNONE'; then
 dnl         prefix=${ac_default_prefix};
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,10 @@
 AUTOMAKE_OPTIONS = dist-bzip2 subdir-objects
 
 NULL=
-SUBDIRS = src examples
+SUBDIRS = src
+if EXAMPLES
+SUBDIRS += examples
+endif
 
 EXTRA_DIST = fampp.spec fampp.spec.in fampp2.pc.in fampp2.pc