PNBLACKLIST: use weak assignments

* this makes it easier to unblacklist it from local.conf which
  is parsed before the recipes

Signed-off-by: Martin Jansa <Martin.Jansa@gmail.com>

3 files changed, 3 insertions, 3 deletions

diff --git a/meta-oe/recipes-connectivity/libimobiledevice/libimobiledevice_1.1.4.bb b/meta-oe/recipes-connectivity/libimobiledevice/libimobiledevice_1.1.4.bb
index 9f2cc49708..5256ce0d29 100644
--- a/meta-oe/recipes-connectivity/libimobiledevice/libimobiledevice_1.1.4.bb
+++ b/meta-oe/recipes-connectivity/libimobiledevice/libimobiledevice_1.1.4.bb
@@ -8,7 +8,7 @@ LIC_FILES_CHKSUM = "\
 #| configure:17888: checking for native large file support
 #| configure:17891: error: in `/home/jenkins/oe/shr-core-branches/shr-core/tmp-eglibc/work/core2-64-oe-linux/libimobiledevice/1.1.4-r0/libimobiledevice-1.1.4':
 #| configure:17893: error: cannot run test program while cross compiling
-PNBLACKLIST[libimobiledevice] = "cannot run test program while cross compiling"
+PNBLACKLIST[libimobiledevice] ?= "cannot run test program while cross compiling"
 
 HOMEPAGE ="http://www.libimobiledevice.org/"
 
diff --git a/meta-oe/recipes-connectivity/soft66/soft66_git.bb b/meta-oe/recipes-connectivity/soft66/soft66_git.bb
index 050bf98aa2..33ca2b5681 100644
--- a/meta-oe/recipes-connectivity/soft66/soft66_git.bb
+++ b/meta-oe/recipes-connectivity/soft66/soft66_git.bb
@@ -3,7 +3,7 @@ LICENSE = "GPLv3 LGPLv3+"
 LIC_FILES_CHKSUM = "file://COPYING;md5=f27defe1e96c2e1ecd4e0c9be8967949 \
                     file://COPYING.LESSER;md5=e6a600fd5e1d9cbde2d983680233ad02 "
 
-PNBLACKLIST[soft66] = "BROKEN: depends on broken libftdi"
+PNBLACKLIST[soft66] ?= "BROKEN: depends on broken libftdi"
 
 DEPENDS = "libftdi"
 
diff --git a/meta-oe/recipes-connectivity/zeroc-ice/zeroc-ice_3.5.1.bb b/meta-oe/recipes-connectivity/zeroc-ice/zeroc-ice_3.5.1.bb
index e39aa188c3..2b6f56ed4f 100644
--- a/meta-oe/recipes-connectivity/zeroc-ice/zeroc-ice_3.5.1.bb
+++ b/meta-oe/recipes-connectivity/zeroc-ice/zeroc-ice_3.5.1.bb
@@ -18,7 +18,7 @@ SRC_URI[sha256sum] = "989e51194c6adadbd156da3288e37bad847b93b3b876502e83033b7049
 #| /home/jenkins/oe/world/shr-core/tmp-eglibc/sysroots/x86_64-linux/usr/include/db_cxx.h:273:14: note: virtual int Db::set_bt_compare(int (*)(Db*, const Dbt*, const Dbt*, size_t*)) <near match>
 #| /home/jenkins/oe/world/shr-core/tmp-eglibc/sysroots/x86_64-linux/usr/include/db_cxx.h:273:14: note:   no known conversion for argument 1 from 'int (*)(DB*, const DBT*, const DBT*) {aka int (*)(__db*, const __db_dbt*, const __db_dbt*)}' to 'int (*)(Db*, const Dbt*, const Dbt*, size_t*) {aka int (*)(Db*, const Dbt*, const Dbt*, long unsigned int*)}'
 #| make[3]: *** [MapDb.o] Error 1
-PNBLACKLIST[zeroc-ice] = "BROKEN: not compatible with default db version"
+PNBLACKLIST[zeroc-ice] ?= "BROKEN: not compatible with default db version"
 
 S = "${WORKDIR}/Ice-${PV}"