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114 lines
4.2 KiB
Plaintext
114 lines
4.2 KiB
Plaintext
-*- outline -*-
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Things it might be nice to do someday:
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------------------------------------------------------------------------------
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* Make AC_CHECK_LIB check whether the function is already available
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before checking for the library. This might involve adding another
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kind of cache variable to indicate whether a given function needs a
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given library. The current ac_cv_func_ variables are intended to
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indicate whether the function is in the default libraries, but
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actually also take into account whatever value LIBS had when they
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were checked for.
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------------------------------------------------------------------------------
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* Add AC_PROG_CC_POSIX to replace the current ad-hoc macros for AIX,
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Minix, ISC, etc.
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------------------------------------------------------------------------------
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* Use AC_EGREP_CPP instead of AC_TRY_LINK to detect structures and members.
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------------------------------------------------------------------------------
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* Make AC_CHECK_FUNC[S] automatically use any particular macros for the
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listed functions.
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------------------------------------------------------------------------------
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* Select the right CONFIG_SHELL automatically (for Ultrix, Lynx especially.)
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------------------------------------------------------------------------------
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* Doc: Add index of concepts.
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------------------------------------------------------------------------------
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* Doc: Centralize information on POSIX, MS-DOS, cross-compiling, and
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other important topics.
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------------------------------------------------------------------------------
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* Doc: Discuss what Autoconf doesn't do: Makefile rules and
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boilerplate, providing replacement C headers and library functions
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(a consistent ANSI C/POSIX.1 environment). Lessons learned.
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Advantages to not requiring special external libraries or config
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files or programs.
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------------------------------------------------------------------------------
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* Split up AC_SUBST substitutions using a loop to accomodate shells
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with severely limited here document sizes, if it turns out to be a problem.
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I'm not sure whether the limit is on lines or bytes; if bytes, it
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will be less of a problem than it was with the long lines used for
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creating a header file.
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------------------------------------------------------------------------------
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* Allow [ and ] in egrep patterns and AC_DEFINE args.
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------------------------------------------------------------------------------
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* Supply a template Makefile.in that people can adapt (what GNU hello
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was going to be).
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** Have CC, DEFS, etc. substitutions.
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** Support all of the GNU standard targets.
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** Parameterize with make variables to require as little modification
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as necessary. Maybe via m4? (Eww, sounds like imake.)
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** Make it usable both with and without a header file.
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------------------------------------------------------------------------------
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* Mike Haertel's suggestions.
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** Provide a file containing decls for alloca, strings, etc. acdecls.h?
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** Cross compiling:
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*** Error messages include instructions for overriding defaults using
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config.site.
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*** Distribute a config.site corresponding to a hypothetical bare POSIX system with c89.
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*** Cache consistency checking: ignore cache if environment
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(CC or PATH) differs.
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** Site defaults:
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*** Convention for consistency checking of env vars and options in config.site so config.site can print obnoxious messages if it doesn't like options or env vars that users use.
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------------------------------------------------------------------------------
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* autoscan: Tell the files that caused inclusion of each macro,
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in a dnl comment. (Seems to be hard.)
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------------------------------------------------------------------------------
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* Look at user contributed macros: prototypes, IEEE double precision math,
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shared libraries, various other things.
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------------------------------------------------------------------------------
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* Test suite: more things to test:
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** That the shell scripts produce correct output on some simple data.
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** Configuration header files. That autoheader does the right thing,
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and so does AC_CONFIG_HEADER when autoconf is run.
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------------------------------------------------------------------------------
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