#AC_DEFUN(
 
  define([SCX_PREPEND], [[$2]="$[$2] [$1]"])
 
  AC_INIT
          AC_CONFIG_HEADER(c/config.h)
          AC_PROG_CC
 
          AC_PATH_X
 
          AC_ARG_WITH(scsh-includes, 
                     AC_HELP_STRING([--with-scsh-includes=DIR],  
                                    [scsh include files are in DIR [/usr/local/include]]),
                     scsh_includes=$withval, 
                     scsh_includes=/usr/local/include)
          AC_SUBST(scsh_includes)
 
          AC_ARG_WITH(scsh-libraries,
                      AC_HELP_STRING([--with-scsh-libraries=DIR],
                                     [scsh libraries are in DIR [/usr/local/lib/scsh]]),
                      scsh_libraries=$withval, 
                      scsh_libraries=/usr/local/lib/scsh)
          AC_SUBST(scsh_libraries)
 
          AC_ARG_WITH(scsh-modules, 
                      AC_HELP_STRING([--with-scsh-modules=DIR],
                                     [scsh modules are in DIR [/usr/local/lib/scsh/modules]]),
                      scsh_modules=$withval, 
                      scsh_modules=/usr/local/lib/scsh/modules)
          AC_SUBST(scsh_modules)

 	  AC_ARG_WITH(xft, 
		      AC_HELP_STRING([--with-xft],
			             [Compile with Xft support]), 
                      with_xft="yes", 
                      with_xft="no")

	  dnl Compile with Xft support?
    	  if test "$with_xft" = "yes"; then
	    LIBS="$LIBS -L${x_libraries}"
	    AC_CHECK_LIB(Xrender, XRenderQueryExtension, SCX_PREPEND(-lXrender, x_libraries))
	    AC_CHECK_LIB(Xft, XftFontOpen, SCX_PREPEND(-lXft, x_libraries))
	    AC_DEFINE([WITH_XFT], 1, [Define 1 if compiling with Xft support])
	    SCX_PREPEND(\$(XFT_OBJECTS), extra_objects)
	    AC_SUBST(load_xft_packages, yes)
	  fi 

	#AC_MSG_CHECKING(scsh installation)
	#AC_CHECK_HEADER(scheme48.h)
	#AC_CHECK_LIB(scsh/libscsh.a, scsh_access)

	AC_CHECK_LIB(crypt, crypt)
	AC_CHECK_LIB(dl, dlopen)
	AC_CHECK_LIB(m, exp)

	#if no_x == 'yes' fail ...

	AC_SUBST(LIBS)
	AC_SUBST(CC)
	AC_SUBST(x_includes)
	AC_SUBST(x_libraries)
	AC_SUBST(extra_objects)

AC_OUTPUT(Makefile)