[asan] Fix asan_device_setup on KitKat.

"ln" from toybox does not understand -f (force) flag.

llvm-svn: 318573

diff --git a/compiler-rt/lib/asan/scripts/asan_device_setup b/compiler-rt/lib/asan/scripts/asan_device_setup
index ec19899..92a1097 100755 (executable)
--- a/compiler-rt/lib/asan/scripts/asan_device_setup
+++ b/compiler-rt/lib/asan/scripts/asan_device_setup
@@ -419,15 +419,18 @@ if ! ( cd "$TMPDIRBASE" && diff -qr old/ new/ ) ; then
       install "$TMPDIR/asanwrapper" /system/bin 755
       install "$TMPDIR/asanwrapper64" /system/bin 755
 
-      adb_shell ln -sf $ASAN_RT /system/lib/$ASAN_RT_SYMLINK
-      adb_shell ln -sf $ASAN_RT64 /system/lib64/$ASAN_RT_SYMLINK
+      adb_shell rm -f /system/lib/$ASAN_RT_SYMLINK
+      adb_shell ln -s $ASAN_RT /system/lib/$ASAN_RT_SYMLINK
+      adb_shell rm -f /system/lib64/$ASAN_RT_SYMLINK
+      adb_shell ln -s $ASAN_RT64 /system/lib64/$ASAN_RT_SYMLINK
     else
       install "$TMPDIR/$ASAN_RT" /system/lib 644
       install "$TMPDIR/app_process32" /system/bin 755 $CTX
       install "$TMPDIR/app_process.wrap" /system/bin 755 $CTX
       install "$TMPDIR/asanwrapper" /system/bin 755 $CTX
 
-      adb_shell ln -sf $ASAN_RT /system/lib/$ASAN_RT_SYMLINK
+      adb_shell rm -f /system/lib/$ASAN_RT_SYMLINK
+      adb_shell ln -s $ASAN_RT /system/lib/$ASAN_RT_SYMLINK
 
       adb_shell rm /system/bin/app_process
       adb_shell ln -s /system/bin/app_process.wrap /system/bin/app_process