1*4fee23f9Smrgdnl ---------------------------------------------------------------------- 2*4fee23f9Smrgdnl This whole bit snagged from libstdc++-v3. 3*4fee23f9Smrg 4*4fee23f9Smrgdnl 5*4fee23f9Smrgdnl GCC_ENABLE 6*4fee23f9Smrgdnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING) 7*4fee23f9Smrgdnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, permit a|b|c) 8*4fee23f9Smrgdnl (FEATURE, DEFAULT, HELP-ARG, HELP-STRING, SHELL-CODE-HANDLER) 9*4fee23f9Smrgdnl 10*4fee23f9Smrgdnl See docs/html/17_intro/configury.html#enable for documentation. 11*4fee23f9Smrgdnl 12*4fee23f9SmrgAC_DEFUN([GCC_ENABLE],[dnl 13*4fee23f9Smrgm4_define([_g_switch],[--enable-$1])dnl 14*4fee23f9Smrgm4_define([_g_help],[AC_HELP_STRING(_g_switch$3,[$4 @<:@default=$2@:>@])])dnl 15*4fee23f9Smrg AC_ARG_ENABLE($1,_g_help, 16*4fee23f9Smrg m4_bmatch([$5], 17*4fee23f9Smrg [^permit ], 18*4fee23f9Smrg [[ 19*4fee23f9Smrg case "$enableval" in 20*4fee23f9Smrg m4_bpatsubst([$5],[permit ])) ;; 21*4fee23f9Smrg *) AC_MSG_ERROR(Unknown argument to enable/disable $1) ;; 22*4fee23f9Smrg dnl Idea for future: generate a URL pointing to 23*4fee23f9Smrg dnl "onlinedocs/configopts.html#whatever" 24*4fee23f9Smrg esac 25*4fee23f9Smrg ]], 26*4fee23f9Smrg [^$], 27*4fee23f9Smrg [[ 28*4fee23f9Smrg case "$enableval" in 29*4fee23f9Smrg yes|no) ;; 30*4fee23f9Smrg *) AC_MSG_ERROR(Argument to enable/disable $1 must be yes or no) ;; 31*4fee23f9Smrg esac 32*4fee23f9Smrg ]], 33*4fee23f9Smrg [[$5]]), 34*4fee23f9Smrg [enable_]m4_bpatsubst([$1],-,_)[=][$2]) 35*4fee23f9Smrgm4_undefine([_g_switch])dnl 36*4fee23f9Smrgm4_undefine([_g_help])dnl 37*4fee23f9Smrg]) 38*4fee23f9Smrg 39