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- dnl ----------------------------------------------------------------------
- dnl This whole bit snagged from libstdc++-v3.
- dnl
- dnl GCC_ENABLE
- dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING)
- dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c)
- dnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER)
- dnl
- dnl See docs/html/17_intro/configury.html#enable for documentation.
- dnl
- AC_DEFUN([GCC_ENABLE],[dnl
- m4_define([_g_switch],[--enable-$1])dnl
- m4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl
- AC_ARG_ENABLE($1,_g_help,
- m4_bmatch([$5],
- [^permit ],
- [[
- case "$enableval" in
- m4_bpatsubst([$5],[permit ])) ;;
- *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;;
- dnl Idea for future: generate a URL pointing to
- dnl "onlinedocs/configopts.html#whatever"
- esac
- ]],
- [^$],
- [[
- case "$enableval" in
- yes|no) ;;
- *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;;
- esac
- ]],
- [[$5]]),
- [enable_]m4_bpatsubst([$1],-,_)[=][$2])
- m4_undefine([_g_switch])dnl
- m4_undefine([_g_help])dnl
- ])
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