+CHIMARA_CURRENT=0 # Increment if interface changes
+CHIMARA_REVISION=0 # Increment if source changes; set 0 if interface changes
+CHIMARA_AGE=0 # Increment if interfaces added; set 0 if removed
+LT_VERSION_INFO="$CHIMARA_CURRENT:$CHIMARA_REVISION:$CHIMARA_AGE"
+AC_SUBST(LT_VERSION_INFO)
+
+### REQUIREMENTS ##############################################################
+GTK_REQUIRED_VERSION=2.12
+GLIB_REQUIRED_VERSION=2.16
+GTK_DOC_REQUIRED_VERSION=1.9
+AC_SUBST(GTK_REQUIRED_VERSION)
+AC_SUBST(GLIB_REQUIRED_VERSION)
+AC_SUBST(GTK_DOC_REQUIRED_VERSION)
+
+### DECLARE COMPILERS #########################################################
+
+AC_USE_SYSTEM_EXTENSIONS # Define _GNU_SOURCE if using GCC
+AC_PROG_CC # C compiler
+AM_PROG_CC_C_O # Automake requires this for per-target CFLAGS
+AC_C_INLINE # Define inline keyword
+AC_PROG_YACC # Building nitfol requires yacc
+
+### DECLARE PROGRAMS ##########################################################
+
+AC_PROG_INSTALL # Install
+m4_defun([_LT_AC_LANG_CXX_CONFIG], [:]) # Disable unnecessary Libtool checks
+m4_defun([_LT_AC_LANG_F77_CONFIG], [:]) # to save time (1.5 only)
+LT_INIT # Libtool 2.2.6 and up
+#LT_INIT([dlopen]) # Should call it this way, but
+#LT_PREREQ([2.2.6]) # ...goddamn Debian still has 1.5
+AC_PROG_LIBTOOL # Old way of declaring Libtool
+AM_GNU_GETTEXT([external]) # Gettext, link to system libintl
+IT_PROG_INTLTOOL([0.40.0]) # Intltool
+PKG_PROG_PKG_CONFIG # pkg_config
+GTK_DOC_CHECK($GTK_DOC_REQUIRED_VERSION)
+# Other utilities used in this package's various make scripts
+AC_PROG_AWK
+AC_PATH_PROG([PERL], [perl]) # Perl
+AC_PATH_PROG([TEST], [test]) # Test
+AC_PATH_PROG([ECHO], [echo]) # Echo
+
+### TYPES #####################################################################
+
+AC_TYPE_UINT8_T
+AC_TYPE_UINT16_T
+AC_TYPE_INT32_T
+AC_TYPE_UINT32_T
+
+### INTERNATIONALIZATION ######################################################
+
+AM_GNU_GETTEXT_VERSION([0.17])