| 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 |
| ]) |
| |
