Working codec2 support

libs/libcodec2/configure.in

@@ -0,0 +1,26 @@
+#                                               -*- Autoconf -*-
+# Process this file with autoconf to produce a configure script.
+
+AC_PREREQ([2.59])
+AC_INIT(libcodec2, 1.0, david@rowetel.com)
+AM_INIT_AUTOMAKE(libcodec2,1.0)
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_LIBTOOL
+
+# Checks for libraries.
+# FIXME: Replace `main' with a function in `-lm':
+AC_CHECK_LIB([m], [main])
+
+# Checks for header files.
+AC_CHECK_HEADERS([stdlib.h string.h])
+
+# Checks for typedefs, structures, and compiler characteristics.
+
+# Checks for library functions.
+AC_FUNC_MALLOC
+AC_CHECK_FUNCS([floor pow sqrt])
+
+AC_CONFIG_FILES([Makefile src/Makefile unittest/Makefile])
+AC_OUTPUT