toolchain-scripts: compatibility with unbound variable protection

Fixed an error when Bash's unbound variable protection is enabled (set -u) and variable "LD_LIBRARY_PATH" does not exist.

(From OE-Core rev: ad2b7b4d4138ac5f6f74f69d9d6d88a592b14c6f)

Signed-off-by: Jan Kircher <openembedded@hetsh.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 85685370b0ad93291cda59fb091a15eeecf5e0d5)
Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/meta/classes/toolchain-scripts.bbclass b/meta/classes/toolchain-scripts.bbclass
index 1d7c703748..d2562b5d38 100644
--- a/meta/classes/toolchain-scripts.bbclass
+++ b/meta/classes/toolchain-scripts.bbclass
@@ -31,7 +31,7 @@ toolchain_create_sdk_env_script () {
         echo '# http://tldp.org/HOWTO/Program-Library-HOWTO/shared-libraries.html#AEN80' >> $script
         echo '# http://xahlee.info/UnixResource_dir/_/ldpath.html' >> $script
         echo '# Only disable this check if you are absolutely know what you are doing!' >> $script
-        echo 'if [ ! -z "$LD_LIBRARY_PATH" ]; then' >> $script
+        echo 'if [ ! -z "${LD_LIBRARY_PATH:-}" ]; then' >> $script
         echo "    echo \"Your environment is misconfigured, you probably need to 'unset LD_LIBRARY_PATH'\"" >> $script
         echo "    echo \"but please check why this was set in the first place and that it's safe to unset.\"" >> $script
         echo '    echo "The SDK will not operate correctly in most cases when LD_LIBRARY_PATH is set."' >> $script