[OE-core] [PATCH 1/1] populate_sdk_ext.bbclass: check unfsd before create it

[Robert Yang]

Fixed when nativesdk-unfs3 is installed:
$ bitbake <image> -c populate_sdk_ext
| Traceback (most recent call last):
|   File "/path/to/oe-core/scripts/lnr", line 21, in <module>
|     os.symlink(target, linkname)
| FileExistsError: [Errno 17] File exists: '../../../../tmp/sysroots/x86_64-linux/usr/bin/unfsd' -> '/path/to/9.0/sysroots/x86_64-wrlinuxsdk-linux/usr/bin/unfsd'

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/classes/populate_sdk_ext.bbclass | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/meta/classes/populate_sdk_ext.bbclass b/meta/classes/populate_sdk_ext.bbclass
index a0856d4..26b5ca6 100644
--- a/meta/classes/populate_sdk_ext.bbclass
+++ b/meta/classes/populate_sdk_ext.bbclass
@@ -502,9 +502,10 @@ install_tools() {
 	done
 	# We can't use the same method as above because files in the sysroot won't exist at this point
 	# (they get populated from sstate on installation)
-	if [ "${SDK_INCLUDE_TOOLCHAIN}" == "1" ] ; then
+	unfsd_path="${SDK_OUTPUT}/${SDKPATHNATIVE}${bindir_nativesdk}/unfsd"
+	if [ "${SDK_INCLUDE_TOOLCHAIN}" == "1" -a ! -e $unfsd_path ] ; then
 		binrelpath=${@os.path.relpath(d.getVar('STAGING_BINDIR_NATIVE',True), d.getVar('TOPDIR', True))}
-		lnr ${SDK_OUTPUT}/${SDKPATH}/$binrelpath/unfsd ${SDK_OUTPUT}/${SDKPATHNATIVE}${bindir_nativesdk}/unfsd
+		lnr ${SDK_OUTPUT}/${SDKPATH}/$binrelpath/unfsd $unfsd_path
 	fi
 	touch ${SDK_OUTPUT}/${SDKPATH}/.devtoolbase
 
-- 
2.9.0