[AC sjt-xft] configure.ac: Complex Option rewrite.

APPROVE COMMIT This is a rewrite of Stephen's complex option support for autoconf 2.5. I feel that the API is a now lot simpler with the declaration of --with-xft being: XE_COMPLEX_ARG_WITH([xft], [XE_COMPLEX_OPTION_HELP_STRING([--with-xft], [Xft client-side font rendering and anti-aliasing], [Xft], [`emacs' (buffers), `menubars', `tabs', and `gauges'], [X11, Xft, Xrender, freetype, and fontconfig], [`emacs,menubars,tabs,gauges'])], [],[], [XE_COMPLEX_OPTION([emacs],[yes]), XE_COMPLEX_OPTION([menubars],[yes]), XE_COMPLEX_OPTION([tabs],[yes]), XE_COMPLEX_OPTION([gauges],[yes])] ) This patch also fixes all the bugs that I could find, adds XE_COMPLEX_ARG_ENABLE for --enable- arguments and moves the runtime generation of option lists to compile time. ChangeLog addition: 2005-02-09 Malcolm Purvis <malcolmp(a)xemacs.org&gt; * configure.ac (XE_COMPLEX_OPTION): * configure.ac (XE_COMPLEX_OPTION_HELP_STRING): * configure.ac (XE_COMPLEX_ARG_WITH): * configure.ac (XE_COMPLEX_ARG_ENABLE): Rewritten complex option support with a simpler API and support for --enable as well a --with. xemacs-xft-bugfixes source patch: Diff command: cvs -q diff -u Files affected: configure.ac Index: configure.ac =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/configure.ac,v retrieving revision 1.1.14.2 diff -u -r1.1.14.2 configure.ac --- configure.ac 2005/02/02 06:06:58 1.1.14.2 +++ configure.ac 2005/02/09 03:11:28 ＠＠ -233,30 +233,19 ＠＠ dnl For example, we might use "--with-xft=all,nomenubars" for compatibility dnl with XFontSet i18n of menubars. (Silly, Xft looks much better than XFS.) dnl Processing such an option requires a number of auxiliary variables. -dnl Use the main variable name for a prefix, eg, "with_xft" for --with-xft. -dnl Start by declaring it with XE_INIT_COMPLEX_OPTION (prefix), eg: -dnl XE_INIT_COMPLEX_OPTION ([with_xft]) -dnl which also initializes auxiliary variables. For each possible value, -dnl declare and intialize it with -dnl XE_APPEND_COMPLEX_OPTION_DEFAULT (prefix, component, yesno), eg: -dnl XE_APPEND_COMPLEX_OPTION_DEFAULT ([with_xft], [emacs], [yes]) -dnl This will create a variable named ${prefix}_${component}. -dnl Next, use XE_PARSE_COMPLEX_OPTION(prefix, cmdline-option) in AC_ARG_WITH -dnl to parse the value. After XE_PARSE_COMPLEX_OPTION is done, all the -dnl component variables will have values. The variable $prefix will contain -dnl the complex value assigned on the command line. Do any sanity-checking -dnl now. Finally, use XE_CLEANUP_COMPLEX_OPTION(prefix) to clear out the -dnl namespace of the auxiliary variables. dnl -dnl Probably a preferable API would look like +dnl Complex options used an expanded forms of AC_ARG_[WITH|ENABLE] called +dnl XE_COMPLEX_ARG_[WITH|ENABLE] both taking 5 parameters. The first 4 +dnl parameters of these macros are the same as original macros with the +dnl exception that all four paramaters are REQUIRED. The ACTION-IF-TRUE code +dnl is run after the argument list has been parsed. dnl -dnl XE_INIT_COMPLEX_OPTION([--with-xft]) -dnl XE_APPEND_COMPLEX_OPTION_DEFAULT([--with-xft],[tabs],[yes]) -dnl XE_PARSE_COMPLEX_OPTION([--with-xft]) -dnl XE_CLEANUP_COMPLEX_OPTION([--with-xft]) +dnl The 5th parameter is a list of XE_COMPLEX_OPTION macros that define the +dnl valid components and their default values. The list must be quoted but +dnl the individual macros should not. dnl -dnl The reason for suggesting the command-line flag is that there is already -dnl a facility for converting it to the variable name somewhere in autoconf. +dnl Option values are stored in the variables with_<package>_<component> or +dnl enable_<feature>_<component> (eg with_xft_menubars) dnl dnl There are two possible uses in XEmacs for this kind of facility. One is dnl exemplified by sound: there are alternative protocols (native, ESD, NAS) ＠＠ -266,52 +255,66 ＠＠ dnl during development of a feature. Perhaps specialized APIs should be dnl provided, see comment on XE_COMPLEX_OPTION_HELP_STRING below. -dnl XE_INIT_COMPLEX_OPTION(prefix) -define([XE_INIT_COMPLEX_OPTION],[[$1]_default="" [$1]_types=""]) - -dnl XE_CLEANUP_COMPLEX_OPTION(prefix) -define([XE_CLEANUP_COMPLEX_OPTION], -[# cleanup -unset [$1]_bogus [$1]_found [$1]_notfirst [$1]_types -unset [$1]_default [$1]_all_default x y]) +dnl XE_COMPLEX_OPTION_DEFAULT(prefix, component, yesno) +dnl --------------------------------------------------- +dnl +dnl Internal macro create the option's shell variable containing the default +dnl value and to note the values in an option list. +dnl +define([XE_EXPAND_COMPLEX_OPTION], +[[$1]_[$2]=[$3] +m4_append([XE_COMPONENT_LIST],[$2],[ ]) +dnl Separate with a ':' instead of a ',' (see <prefix>_default below) to avoid +dnl confusion with marco parameter lists. +m4_append([XE_COMPONENT_DEFAULT],[m4_if([$3],no,no)[$2]],[:]) +]) -dnl #### This doesn't read so well for alternative libraries like sound. -dnl #### Fucking autocrap. AC_HELP_STRING does some weird internal shit, -dnl so if you quote the second arg with [], you get really bizarre output -dnl from ./configure --help. Multiple quotes make it worse, and it matters -dnl whether you define AC_HELP_STRING into XE_COMPLEX_OPTION_HELP_STRING, or -dnl define XE_COMPLEX_OPTION_HELP_STRING to just do the string substitution -dnl and invoke it inside of AC_HELP_STRING in the call to AC_ARG_WITH. But -dnl St. IGNUble himself won't be able to help you if you put a comma into the -dnl second arg to AC_HELP_STRING without the quotes; autocrap will shit its -dnl pants. Yet it does fine if arguments to XE_COMPLEX_OPTION_HELP_STRING -dnl contain commas! +dnl XE_EXPAND_COMPLEX_OPTIONS(prefix, option_list) +dnl ---------------------------------------------- dnl -dnl XE_COMPLEX_OPTION_HELP_STRING(flag, long, short, components, libraries) -define([XE_COMPLEX_OPTION_HELP_STRING], -[AC_HELP_STRING([$1],Compile with support for [$2]. Components that can use -[$3] are [$4]. Prefix component with `no' to disable its use of [$3]. Requires -[$5] support. Default is [$6].)]) +dnl Internal macro to recursively expand all the options in the option list. +dnl +define([XE_EXPAND_COMPLEX_OPTIONS], +[m4_if([$2], [[]], [], + [XE_EXPAND_COMPLEX_OPTION([$1], m4_fst($2))[]dnl +XE_EXPAND_COMPLEX_OPTIONS([$1], m4_cdr($2))])]) -dnl XE_APPEND_COMPLEX_OPTION_DEFAULT(prefix, component, yesno) -define([XE_APPEND_COMPLEX_OPTION_DEFAULT], -[[$1]_[$2]=[$3] -test -n "${[$1]_default}" && [$1]_default="${[$1]_default}," -test "${[$1]_[$2]}" != "yes" && [$1]_default="${[$1]_default}no" -[$1]_default="${[$1]_default}[$2]" -[$1]_notfirst="" -test -n "${[$1]_types}" && [$1]_types="${[$1]_types} " -[$1]_types="${[$1]_types}[$2]"]) +dnl XE_INIT_COMPLEX_OPTION(prefix, option_list) +dnl ------------------------------------------- +dnl +dnl Internal macro to initialise the complex option shell variables. +dnl Variables of the form <prefix>_<option> contain the default value for that +dnl option. <prefix>_types contains a space-separated list of all the options +dnl and <prefix>_default contains a comma-separated list of all the default +dnl values. +dnl +define([XE_INIT_COMPLEX_OPTION], +[[$1]_notfirst="" +dnl +XE_EXPAND_COMPLEX_OPTIONS($＠) +[$1]_types="XE_COMPONENT_LIST" +[$1]_default="m4_translit(XE_COMPONENT_DEFAULT,[:],[,])" +dnl Undefine these macros so that they can be reused by later complex +dnl options. +undefine([XE_COMPONENT_LIST]) +undefine([XE_COMPONENT_DEFAULT]) +]) dnl XE_PARSE_COMPLEX_OPTION(prefix, cmdline-flag) +dnl --------------------------------------------- +dnl +dnl Internal macro to parse the option values. If an undeclared option is +dnl found then an error is generated. +dnl define([XE_PARSE_COMPLEX_OPTION], -[for x in `echo "$withval" | sed -e 's/,/ /g'` ; do +[for x in `echo "$[$1]" | sed -e 's/,/ /g'` ; do [$1]_all_default="" [$1]_found="" case "$x" in n | no | non | none ) [$1]_all_default=no ;; a | al | all | both ) [$1]_all_default=yes ;; esac + if test -z "$[$1]_all_default"; then for y in $[$1]_types; do dnl echo "testing x='$x' against y='$y'" ＠＠ -319,29 +322,79 ＠＠ dnl echo "$x" = "$y" [$1]_found=yes dnl echo eval `echo "[$1]_$y=yes"` - eval `echo "[$1]_$y=yes"` + eval "[$1]_$y=yes" elif test "$x" = "no$y"; then dnl echo "$x" = "no$y" [$1]_found=yes dnl echo eval `echo "[$1]_$y=no"` - eval `echo "[$1]_$y=no"` + eval "[$1]_$y=no" fi done - test -z "[$1]_found" && [$1]_bogus=yes + test -z "$[$1]_found" && [$1]_bogus=yes fi if test "$[$1]_bogus" = "yes" -o \ \( -n "$[$1]_all_default" -a -n "$[$1]_notfirst" \) ; then - USAGE_ERROR(["Valid values for the \`[$2]' option are: + USAGE_ERROR(["Valid values for the [$2] option are: $[$1]_types. With prefix \"no\", switch it off. Defaults may be overridden with \`all' or \`none' first in the list. -Hardcoded default is: \`$[$1]_default'."]) +Hardcoded default is: $[$1]_default."]) elif test -n "$[$1]_all_default" ; then - for y in "$[$1]_types"; do - eval `echo "[$1]_$y="'$[$1]_all_default'` + for y in $[$1]_types; do + eval "[$1]_$y=$[$1]_all_default" done fi [$1]_notfirst=yes done +unset [$1]_bogus [$1]_found [$1]_notfirst [$1]_types +unset [$1]_default [$1]_all_default x y +]) + +dnl XE_COMPLEX_OPTION(option, yesno) +dnl -------------------------------- +dnl +dnl Declare a complex option and its default value. The value MUST be either +dnl yes or no. +dnl +define([XE_COMPLEX_OPTION],[[$1,$2]]) + +dnl XE_COMPLEX_OPTION_HELP_STRING(flag, long, short, components, libraries) +dnl ----------------------------------------------------------------------- +dnl Boilerplate help string for complex options. +dnl #### This doesn't read so well for alternative libraries like sound. +dnl +define([XE_COMPLEX_OPTION_HELP_STRING], +[AC_HELP_STRING([$1],[Compile with support for $2. Components that can use +$3 are $4. Prefix component with `no' to disable its use of $3. Requires +$5 support. Default is $6.])]) + +dnl XE_COMPLEX_ARG_WITH(PACKAGE, HELP-STRING, ACTION-IF-TRUE, ACTION-IF-FALSE, +dnl [XE_COMPLEX_OPTION(a,yes), ....]) +dnl -------------------------------------------------------------------------- +dnl +dnl Expanded version of AC_ARG_WITH for complex options. All the parameters +dnl are required. +dnl +define([XE_COMPLEX_ARG_WITH], +[XE_INIT_COMPLEX_OPTION([with_]patsubst([$1], -, _), m4_shiftn(4, $＠)) +AC_ARG_WITH([$1],[$2], +[XE_PARSE_COMPLEX_OPTION([with_]patsubst([$1], -, _), [--with-$1]) +$3 +],[$4]) +]) + +dnl XE_COMPLEX_ARG_ENABLE(FEATURE, HELP-STRING, ACTION-IF-TRUE, ACTION-IF-FALSE, +dnl [XE_COMPLEX_OPTION, ....]) +dnl -------------------------------------------------------------------------- +dnl +dnl Expanded version of AC_ARG_ENABLE for complex options. All the parameters +dnl are required. +dnl +define([XE_COMPLEX_ARG_ENABLE], +[XE_INIT_COMPLEX_OPTION([enable_]patsubst([$1], -, _), m4_shiftn(4, $＠)) +AC_ARG_ENABLE([$1],[$2], +[XE_PARSE_COMPLEX_OPTION([enable_]patsubst([$1], -, _), [--enable-$1]) +$3 +],[$4]) ]) dnl ------------------------------------------------------------------------- ＠＠ -439,25 +492,20 ＠＠ useful, for the same reason as JPEG images.]), [], []) -# Xft uses an option complex similar to sound and database -XE_INIT_COMPLEX_OPTION([with_xft]) dnl if you change defaults, make sure to fix arg 6 of the OPTION_HELP macro. -dnl these should really be enable_xft_*, but COMPLEX_OPTION support doesn't -dnl grok that mixed with AC_ARG_WITH. -XE_APPEND_COMPLEX_OPTION_DEFAULT([with_xft],[emacs],[yes]) -XE_APPEND_COMPLEX_OPTION_DEFAULT([with_xft],[menubars],[yes]) -XE_APPEND_COMPLEX_OPTION_DEFAULT([with_xft],[tabs],[yes]) -XE_APPEND_COMPLEX_OPTION_DEFAULT([with_xft],[gauges],[yes]) -dnl handle arguments -AC_ARG_WITH([xft], +XE_COMPLEX_ARG_WITH([xft], [XE_COMPLEX_OPTION_HELP_STRING([--with-xft], [Xft client-side font rendering and anti-aliasing], [Xft], [`emacs' (buffers), `menubars', `tabs', and `gauges'], [X11, Xft, Xrender, freetype, and fontconfig], [`emacs,menubars,tabs,gauges'])], - [XE_PARSE_COMPLEX_OPTION([with_xft],[--with-xft])], - []) + [],[], + [XE_COMPLEX_OPTION([emacs],[yes]), + XE_COMPLEX_OPTION([menubars],[yes]), + XE_COMPLEX_OPTION([tabs],[yes]), + XE_COMPLEX_OPTION([gauges],[yes])] +) dnl sanity checking dnl #### Maybe we should XE_DIE here instead? Or fix the UI so that dnl emacs is always implicit? (I worry that --without-xft would be weird.) ＠＠ -466,7 +514,6 ＠＠ AC_MSG_WARN([Forcing --with-xft=emacs because Xft is enabled]) with_xft_emacs=yes fi -XE_CLEANUP_COMPLEX_OPTION([with_xft]) # end of Xft parsing AC_ARG_WITH([zlib], AC_HELP_STRING([--with-zlib],[Support inflate (de)compression internally.]), -- Malcolm Purvis <malcolmp(a)xemacs.org&gt;