blob: 8f299e8b95604f5c8cb822db842526658ac08cec (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
|
--- ltmain.sh
+++ ltmain.sh
@@ -136,6 +136,30 @@
lo2o="s/\\.lo\$/.${objext}/"
o2lo="s/\\.${objext}\$/.lo/"
quote_scanset='[[~#^*{};<>?'"'"' ]'
+
+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
#####################################
# Shell function definitions:
|
GitWeb
