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.

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>

diff --git a/meta/classes/toolchain-scripts.bbclass b/meta/classes/toolchain-scripts.bbclass
index db1d3215ef7e55e530829ce4aaa3d3ae372dfedf..9aa31dc6cd5b30c44d93e3367597cfee480eaf60 100644 (file)
--- a/meta/classes/toolchain-scripts.bbclass
+++ b/meta/classes/toolchain-scripts.bbclass
@@ -29,7 +29,7 @@ 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