diff --git a/configure.ac b/configure.ac
index 8e8429c8..1ffca9bd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,11 @@
 #                                               -*- Autoconf -*-
 # Process this file with autoconf to produce a configure script.
 
-AC_INIT([libpostal], [0.3.3])
+m4_define(LIBPOSTAL_MAJOR_VERSION, [1])
+m4_define(LIBPOSTAL_MINOR_VERSION, [0])
+m4_define(LIBPOSTAL_PATCH_VERSION, [0])
+
+AC_INIT([libpostal], LIBPOSTAL_MAJOR_VERSION.LIBPOSTAL_MINOR_VERSION.LIBPOSTAL_PATCH_VERSION)
 
 AC_CONFIG_MACRO_DIRS([m4])
 
@@ -18,9 +22,6 @@ AC_PROG_INSTALL
 LDFLAGS="$LDFLAGS -L/usr/local/lib"
 
 # Checks for libraries.
-AC_SEARCH_LIBS([snappy_compress],
-  [snappy],,[AC_MSG_ERROR([Could not find snappy])
-])
 AC_SEARCH_LIBS([log],
   [m],,[AC_MSG_ERROR([Could not find math library])])
 
@@ -47,13 +48,11 @@ AC_TYPE_UINT8_T
 AC_CHECK_TYPES([ptrdiff_t])
 
 # Checks for library functions.
-AC_FUNC_MMAP
-AC_CHECK_FUNCS([malloc realloc getcwd gettimeofday memmove memset munmap regcomp setlocale sqrt strdup strndup])
+AC_CHECK_FUNCS([malloc realloc getcwd gettimeofday memmove memset regcomp setlocale sqrt strdup strndup])
 
 AC_CONFIG_FILES([Makefile
                  libpostal.pc
                  src/Makefile
-                 src/sparkey/Makefile
                  test/Makefile])
 
 AC_CHECK_PROG([FOUND_SHUF], [shuf], [yes])
@@ -103,5 +102,6 @@ AC_ARG_WITH(cflags-scanner-extra, [AS_HELP_STRING([--with-cflags-scanner-extra@<
 
 AC_MSG_NOTICE([extra cflags for scanner.c: $CFLAGS_SCANNER_EXTRA])
 AC_SUBST(CFLAGS_SCANNER_EXTRA)
+AC_SUBST(LIBPOSTAL_SO_VERSION, LIBPOSTAL_MAJOR_VERSION:LIBPOSTAL_MINOR_VERSION:LIBPOSTAL_PATCH_VERSION)
 
 AC_OUTPUT