wait for all compile commands to finish before exiting

build.sh

@@ -33,9 +33,13 @@ wait
 # Example: LD_LIBRARY_PATH=bin/lib bin/tools/dumpnbt
 echo "Building tools..."
 mkdir -pv bin/tools
-# add compile commands to this variable
-COMPILE_COMMANDS="
-set -v
-$CXX_WITH_FLAGS src/tools/dumpnbt.cpp -Lbin/lib -l:nbt.so -o bin/tools/dumpnbt &
-"
-sh <<< $COMPILE_COMMANDS
+# add compile commands to this array
+COMPILE_COMMANDS=(
+"$CXX_WITH_FLAGS src/tools/dumpnbt.cpp -Lbin/lib -l:nbt.so -o bin/tools/dumpnbt"
+)
+for command in ${!COMPILE_COMMANDS[@]}; do
+    echo "${COMPILE_COMMANDS[command]}"
+    ${COMPILE_COMMANDS[command]} &
+done
+
+wait