+AC_ARG_ENABLE(checking,
+[AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
+ [enable expensive run-time checks. With LIST,
+ enable only specific categories of checks.
+ Categories are: all,yes,no.
+ Flags are: stringbytes, stringoverrun, stringfreelist,
+ xmallocoverrun, conslist])],
+[ac_checking_flags="${enableval}"],[])
+IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
+for check in $ac_checking_flags
+do
+ case $check in
+ # these set all the flags to specific states
+ yes) ac_enable_checking=1 ;;
+ no) ac_enable_checking= ;
+ ac_gc_check_stringbytes= ;
+ ac_gc_check_string_overrun= ;
+ ac_gc_check_string_free_list= ;
+ ac_xmalloc_overrun= ;
+ ac_gc_check_cons_list= ;;
+ all) ac_enable_checking=1 ;
+ ac_gc_check_stringbytes=1 ;
+ ac_gc_check_string_overrun=1 ;
+ ac_gc_check_string_free_list=1 ;
+ ac_xmalloc_overrun=1 ;
+ ac_gc_check_cons_list=1 ;;
+ # these enable particular checks
+ stringbytes) ac_gc_check_stringbytes=1 ;;
+ stringoverrun) ac_gc_check_string_overrun=1 ;;
+ stringfreelist) ac_gc_check_string_free_list=1 ;;
+ xmallocoverrun) ac_xmalloc_overrun=1 ;;
+ conslist) ac_gc_check_cons_list=1 ;;
+ *) AC_MSG_ERROR(unknown check category $check) ;;
+ esac
+done
+IFS="$ac_save_IFS"
+
+if test x$ac_enable_checking != x ; then
+ AC_DEFINE(ENABLE_CHECKING, 1,
+[Enable expensive run-time checking of data types?])
+fi
+if test x$ac_gc_check_stringbytes != x ; then
+ AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
+[Define this temporarily to hunt a bug. If defined, the size of
+ strings is redundantly recorded in sdata structures so that it can
+ be compared to the sizes recorded in Lisp strings.])
+fi
+if test x$ac_gc_check_stringoverrun != x ; then
+ AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
+[Define this to check for short string overrun.])
+fi
+if test x$ac_gc_check_string_free_list != x ; then
+ AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
+[Define this to check the string free list.])
+fi
+if test x$ac_xmalloc_overrun != x ; then
+ AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
+[Define this to check for malloc buffer overrun.])
+fi
+if test x$ac_gc_check_cons_list != x ; then
+ AC_DEFINE(GC_CHECK_CONS_LIST, 1,
+[Define this to check for errors in cons list.])
+fi
+
+AC_ARG_ENABLE(profiling,
+[AS_HELP_STRING([--enable-profiling],
+ [build emacs with profiling support.
+ This might not work on all platforms])],
+[ac_enable_profiling="${enableval}"],[])
+if test x$ac_enable_profiling != x ; then
+ PROFILING_CFLAGS="-DPROFILING=1 -pg"
+ PROFILING_LDFLAGS="-pg"
+else
+ PROFILING_CFLAGS=
+ PROFILING_LDFLAGS=
+fi
+