-
-if test -z "$max_cmd_len"; then
- i=0
- testring="ABCD"
- new_result=
-
- # If test is not a shell built-in, we'll probably end up computing a
- # maximum length that is only half of the actual maximum length, but
- # we can't tell.
- while (test "X"`$SHELL $0 --fallback-echo "X$testring" 2>/dev/null` \
- = "XX$testring") >/dev/null 2>&1 &&
- new_result=`expr "X$testring" : ".*" 2>&1` &&
- max_cmd_len="$new_result" &&
- test "$i" != 17 # 1/2 MB should be enough
- do
- i=`expr $i + 1`
- testring="$testring$testring"
- done
- testring=
- # Add a significant safety factor because C++ compilers can tack on massive
- # amounts of additional arguments before passing them to the linker.
- # It appears as though 1/2 is a usable value.
- max_cmd_len=`expr $max_cmd_len \/ 2`
-fi