logging.bbclass: avoid bashism in bbdebug()

Checking the bbdebug() debug level parameter with a regular
test expression only works in bash. Using tr to filter out
digits and then checking whether anything is left achieves
the same result and is more portable.

(From OE-Core rev: 25cb71799e72d4e0c4fe39653d8b84280d087372)

Signed-off-by: Patrick Ohly <patrick.ohly@intel.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/meta/classes/logging.bbclass b/meta/classes/logging.bbclass
index 78d65bda3a..f6648b2119 100644
--- a/meta/classes/logging.bbclass
+++ b/meta/classes/logging.bbclass
@@ -62,7 +62,8 @@ bbdebug() {
         
         # Strip off the debug level and ensure it is an integer
         DBGLVL=$1; shift
-        if ! [[ "$DBGLVL" =~ ^[0-9]+ ]]; then
+        NONDIGITS=$(echo "$DBGLVL" | tr -d [:digit:])
+        if [ "$NONDIGITS" ]; then
                 bbfatal "$USAGE"
         fi