1 files changed, 8 insertions, 12 deletions
diff --git a/tools/meson-apply-m4.sh b/tools/meson-apply-m4.sh
index 7b4801ff94..35d8d159ef 100755
--- a/tools/meson-apply-m4.sh
+++ b/tools/meson-apply-m4.sh
@@ -1,25 +1,21 @@
-#!/bin/sh
+#!/bin/bash
 # SPDX-License-Identifier: LGPL-2.1-or-later
 set -eu
 
-CONFIG=$1
-TARGET=$2
+CONFIG="${1:?Missing path to config.h}"
+TARGET="${2:?Missing target m4 file}"
 
-if [ $# -ne 2 ]; then
-    echo 'Invalid number of arguments.'
-    exit 1
-fi
-
-if [ ! -f $CONFIG ]; then
+if [ ! -f "$CONFIG" ]; then
     echo "$CONFIG not found."
     exit 2
 fi
 
-if [ ! -f $TARGET ]; then
+if [ ! -f "$TARGET" ]; then
     echo "$TARGET not found."
     exit 3
 fi
 
-DEFINES=$(awk '$1 == "#define" && $3 == "1" { printf "-D%s ", $2 }' $CONFIG)
+DEFINES=()
+mapfile -t DEFINES < <(awk '$1 == "#define" && $3 == "1" { printf "-D%s\n", $2 }' "$CONFIG")
 
-m4 -P $DEFINES $TARGET
+m4 -P "${DEFINES[@]}" "$TARGET"