[PATCH] iproute2.inc: clean .o before do_configure

["Changqing Li" <changqing.li@windriver.com>]

From: Changqing Li <changqing.li@windriver.com>

Reproduce steps:
1. add 'DISTRO_FEATURES_append = ' usrmerge'' in local.conf
2. bitbake iproute2
3. remove 'DISTRO_FEATURES_append = ' usrmerge'' from local.conf
4. bitbake iproute2

In step4, since CLEANBROKEN is set, files generated in step2 is not
cleaned and rebuilded. Check after step4:

file /sbin/ip.iproute2
/sbin/ip.iproute2: ELF 64-bit LSB pie executable, x86-64, version 1
(SYSV), dynamically linked, interpreter /usr/lib64/ld-linux-x86-64.so.2,

interpreter path is wrong, it should be  /lib64/ld-linux-x86-64.so.2

This will make run ip.iproute2 report error:
-sh: /sbin/ip.iproute2: No such file or directory

Signed-off-by: Changqing Li <changqing.li@windriver.com>
---
 meta/recipes-connectivity/iproute2/iproute2.inc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/meta/recipes-connectivity/iproute2/iproute2.inc b/meta/recipes-connectivity/iproute2/iproute2.inc
index 403d264..e70620c 100644
--- a/meta/recipes-connectivity/iproute2/iproute2.inc
+++ b/meta/recipes-connectivity/iproute2/iproute2.inc
@@ -29,6 +29,10 @@ EXTRA_OEMAKE = "\
     LIBDIR='${libdir}' \
 "
 
+do_configure_prepend () {
+    find ${B} -ignore_readdir_race -name \*.o -type f -print0 | xargs -0 rm -f
+}
+
 do_configure_append () {
     sh configure ${STAGING_INCDIR}
     # Explicitly disable ATM support
-- 
2.7.4