add a lib for rendering text in sdl2 and rules to make in makefile

SDL2_ttf/external/harfbuzz/autogen.sh

@@ -0,0 +1,48 @@
+#!/bin/sh
+# Run this to generate all the initial makefiles, etc.
+
+test -n "$srcdir" || srcdir=`dirname "$0"`
+test -n "$srcdir" || srcdir=.
+
+olddir=`pwd`
+cd $srcdir
+
+#printf "checking for ragel... "
+#which ragel || {
+#	echo "You need to install ragel... See http://www.complang.org/ragel/"
+#	exit 1
+#}
+
+printf "checking for pkg-config... "
+which pkg-config || {
+	echo "*** No pkg-config found, please install it ***"
+	exit 1
+}
+
+printf "checking for libtoolize... "
+which glibtoolize || which libtoolize || {
+	echo "*** No libtoolize (libtool) found, please install it ***"
+	exit 1
+}
+printf "checking for gtkdocize... "
+if which gtkdocize ; then
+	gtkdocize --copy || exit 1
+else
+	echo "*** No gtkdocize (gtk-doc) found, skipping documentation ***"
+	echo "EXTRA_DIST = " > gtk-doc.make
+fi
+
+printf "checking for autoreconf... "
+which autoreconf || {
+	echo "*** No autoreconf (autoconf) found, please install it ***"
+	exit 1
+}
+
+echo "running autoreconf --force --install --verbose"
+autoreconf --force --install --verbose || exit $?
+
+cd $olddir
+test -n "$NOCONFIGURE" || {
+	echo "running configure $@"
+	"$srcdir/configure" "$@"
+}