-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for a thread-safe mkdir -p" >&5
-$as_echo_n "checking for a thread-safe mkdir -p... " >&6; }
-if test -z "$MKDIR_P"; then
- if test "${ac_cv_path_mkdir+set}" = set; then :
- $as_echo_n "(cached) " >&6
-else
- as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH$PATH_SEPARATOR/opt/sfw/bin
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_prog in mkdir gmkdir; do
- for ac_exec_ext in '' $ac_executable_extensions; do
- { test -f "$as_dir/$ac_prog$ac_exec_ext" && $as_test_x "$as_dir/$ac_prog$ac_exec_ext"; } || continue
- case `"$as_dir/$ac_prog$ac_exec_ext" --version 2>&1` in #(
- 'mkdir (GNU coreutils) '* | \
- 'mkdir (coreutils) '* | \
- 'mkdir (fileutils) '4.1*)
- ac_cv_path_mkdir=$as_dir/$ac_prog$ac_exec_ext
- break 3;;
- esac
- done
- done
+if mkdir -p --version . >/dev/null 2>&1 && test ! -d ./--version; then
+ # We used to keeping the `.' as first argument, in order to
+ # allow $(mkdir_p) to be used without argument. As in
+ # $(mkdir_p) $(somedir)
+ # where $(somedir) is conditionally defined. However this is wrong
+ # for two reasons:
+ # 1. if the package is installed by a user who cannot write `.'
+ # make install will fail,
+ # 2. the above comment should most certainly read
+ # $(mkdir_p) $(DESTDIR)$(somedir)
+ # so it does not work when $(somedir) is undefined and
+ # $(DESTDIR) is not.
+ # To support the latter case, we have to write
+ # test -z "$(somedir)" || $(mkdir_p) $(DESTDIR)$(somedir),
+ # so the `.' trick is pointless.
+ mkdir_p='mkdir -p --'
+else
+ # On NextStep and OpenStep, the `mkdir' command does not
+ # recognize any option. It will interpret all options as
+ # directories to create, and then abort because `.' already
+ # exists.
+ for d in ./-p ./--version;
+ do
+ test -d $d && rmdir $d