export WANT_AUTOMAKE=1.7
-sh autopoint --force # for GNU gettext
-sh libtoolize --copy --force --automake
-sh aclocal -I m4 $ACLOCAL_FLAGS
-#sh autoheader
-sh autoconf
-sh automake --include-deps --add-missing --copy
+sh autopoint --force || exit 1 # for GNU gettext
+sh libtoolize --copy --force --automake || exit 1
+sh aclocal -I m4 $ACLOCAL_FLAGS || exit 1
+#sh autoheader || exit 1
+sh autoconf || exit 1
+sh automake --include-deps --add-missing --copy || exit 1
echo
echo You are now ready to run ./configure