+dnl CF_ARG_DISABLE version: 3 updated: 1999/03/30 17:24:31
+dnl --------------
+dnl Allow user to disable a normally-on option.
+AC_DEFUN([CF_ARG_DISABLE],
+[CF_ARG_OPTION($1,[$2],[$3],[$4],yes)])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_ARG_OPTION version: 4 updated: 2010/05/26 05:38:42
+dnl -------------
+dnl Restricted form of AC_ARG_ENABLE that ensures user doesn't give bogus
+dnl values.
+dnl
+dnl Parameters:
+dnl $1 = option name
+dnl $2 = help-string
+dnl $3 = action to perform if option is not default
+dnl $4 = action if perform if option is default
+dnl $5 = default option value (either 'yes' or 'no')
+AC_DEFUN([CF_ARG_OPTION],
+[AC_ARG_ENABLE([$1],[$2],[test "$enableval" != ifelse([$5],no,yes,no) && enableval=ifelse([$5],no,no,yes)
+ if test "$enableval" != "$5" ; then
+ifelse([$3],,[ :]dnl
+,[ $3]) ifelse([$4],,,[
+ else
+ $4])
+ fi],[enableval=$5 ifelse([$4],,,[
+ $4
+])dnl
+ ])])dnl
+dnl ---------------------------------------------------------------------------
+dnl CF_AR_FLAGS version: 5 updated: 2010/05/20 20:24:29
+dnl -----------
+dnl Check for suitable "ar" (archiver) options for updating an archive.
+AC_DEFUN([CF_AR_FLAGS],[
+AC_REQUIRE([CF_PROG_AR])
+
+AC_CACHE_CHECK(for options to update archives, cf_cv_ar_flags,[
+ cf_cv_ar_flags=unknown
+ for cf_ar_flags in -curv curv -crv crv -cqv cqv -rv rv
+ do
+
+ # check if $ARFLAGS already contains this choice
+ if test "x$ARFLAGS" != "x" ; then
+ cf_check_ar_flags=`echo "x$ARFLAGS" | sed -e "s/$cf_ar_flags\$//" -e "s/$cf_ar_flags / /"`
+ if test "x$ARFLAGS" != "$cf_check_ar_flags" ; then
+ cf_cv_ar_flags=
+ break
+ fi
+ fi
+
+ rm -f conftest.$ac_cv_objext
+ rm -f conftest.a
+
+ cat >conftest.$ac_ext <<EOF
+#line __oline__ "configure"
+int testdata[[3]] = { 123, 456, 789 };
+EOF
+ if AC_TRY_EVAL(ac_compile) ; then
+ echo "$AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext" >&AC_FD_CC
+ $AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext 2>&AC_FD_CC 1>/dev/null
+ if test -f conftest.a ; then
+ cf_cv_ar_flags=$cf_ar_flags
+ break
+ fi
+ else
+ CF_VERBOSE(cannot compile test-program)
+ break
+ fi
+ done
+ rm -f conftest.a conftest.$ac_ext conftest.$ac_cv_objext
+])
+
+if test -n "$ARFLAGS" ; then
+ if test -n "$cf_cv_ar_flags" ; then
+ ARFLAGS="$ARFLAGS $cf_cv_ar_flags"
+ fi
+else
+ ARFLAGS=$cf_cv_ar_flags
+fi
+
+AC_SUBST(ARFLAGS)
+])
+dnl ---------------------------------------------------------------------------