Using Libtool-- in your project Libtool-- consist entirely of declaration (or header) files. All you need to do, is to include those file in your project code. You can copy the header files into your source code, or you can use them from their installed location - it's entirely up to you, though you should read and understand the terms of the licence The included file ltmm.m4 defines the Autoconf macro AM_LTMM_PATH that you can use in your configure.ac file. It defines the substitution variable LTMM_CPPFLAGS to contain the path to the Libtool-- header files. Put that macro in your configuration file ... AC_PROG_LIBTOOL AM_LTMM_PATH ... and in your Makefile.ams, do ... AM_CPPFLAGS = $(LTMM_CPPFLAGS) ... Alternatively, you can use the included script ltmm-config to obtain the information.