buildsystem: Use printf instead of echo, use dollar shell subst instead backtick

Author: uyjulian

scripts/001-binutils.sh

@@ -44,8 +44,8 @@ if [ "$(uname -s)" = "Darwin" ]; then
     TARG_XTRA_OPTS="--with-system-zlib --with-gmp=$(brew --prefix gmp) --with-mpfr=$(brew --prefix mpfr)"
   elif command -v port &> /dev/null; then
   ## Check if using MacPorts
-    MACPORT_BASE=$(dirname `port -q contents gmp|grep gmp.h`|sed s#/include##g)
-    echo Macport base is $MACPORT_BASE
+    MACPORT_BASE=$(dirname $(port -q contents gmp|grep gmp.h)|sed s#/include##g)
+    printf 'Macport base is %s\n' "$MACPORT_BASE"
     TARG_XTRA_OPTS="--with-system-zlib --with-libiconv_prefix=$MACPORT_BASE --with-gmp=$MACPORT_BASE --with-mpfr=$MACPORT_BASE --with-mpc=$MACPORT_BASE"
   fi
 fi