toolchain/wrapper: replace legacy backticks with $()

This replaces deprecated backticks by more versatile $(...) syntax.

Found with shellcheck.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
[alter commit title, extend commit message]
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>

diff --git a/target/toolchain/files/wrapper.sh b/target/toolchain/files/wrapper.sh
index 445212838269f3e572edc72358777b74da588229..bd4996cac278add38ceed7af04c7d2e06c4c18da 100755 (executable)
--- a/target/toolchain/files/wrapper.sh
+++ b/target/toolchain/files/wrapper.sh
@@ -15,10 +15,10 @@
 #
 
 PROGNAME=$0
-REALNAME=`readlink -f $0`
+REALNAME=$(readlink -f $0)
 
-REALNAME_BASE=`basename $REALNAME`
-REALNAME_DIR=`dirname $REALNAME`
+REALNAME_BASE=$(basename $REALNAME)
+REALNAME_DIR=$(dirname $REALNAME)
 
 TARGET_FUNDAMENTAL_ASFLAGS=''
 TARGET_FUNDAMENTAL_CFLAGS=''