Zero-byte Application being installed from pkgbuild generated .pkg installer - macos

Question

this is the shell script that I use to generate the .pkg installer.
#!/bin/bash
APP_PATH=$1
DSYM_PATH=$2
PKG_PATH=$3
IDENTIFIER=$4
VERSION=$5
TARGET_DIR=$(dirname "$APP_PATH")/temp
echo "Deleting old Pkg File."
rm -rf $PKG_PATH
rm -rf $TARGET_DIR
mkdir $TARGET_DIR
echo "Done."
echo "Copying APP \"$APP_PATH\" and dSYM \"$DSYM_PATH \" to temp folder."
cp -a $APP_PATH $TARGET_DIR
cp -a $DSYM_PATH $TARGET_DIR
echo "Done."
echo "Generating .Pkg file with dSYM folder"
/usr/bin/pkgbuild \
--root "$TARGET_DIR" \
--install-location "/Applications" \
--identifier "$IDENTIFIER" \
--version "$VERSION" \
"$PKG_PATH"
echo "Done Generating \"$APP_PATH\" with dSYM folder"
This .pkg is installed to /Applications folder but it's zero byte in size.
I've tried to change the permission of the files but it's no use.

Answer 1

To solve this issue, I had to change the permissions for files.
I've added the following line in the script.
chmod -R 755 $TARGET_DIR
The file with wrong permission will result a zero-bytes installation.
#!/bin/bash
APP_PATH=$1
DSYM_PATH=$2
PKG_PATH=$3
IDENTIFIER=$4
VERSION=$5
TARGET_DIR=$(dirname "$APP_PATH")/temp
echo "Deleting old Pkg File."
rm -rf $PKG_PATH
rm -rf $TARGET_DIR
mkdir $TARGET_DIR
echo "Done."
echo "Copying APP \"$APP_PATH\" and dSYM \"$DSYM_PATH \" to temp folder."
cp -a $APP_PATH $TARGET_DIR
cp -a $DSYM_PATH $TARGET_DIR
echo "Done."
chmod -R 755 $TARGET_DIR
echo "Generating .Pkg file with dSYM folder"
/usr/bin/pkgbuild \
--root "$TARGET_DIR" \
--install-location "/Applications" \
--identifier "$IDENTIFIER" \
--version "$VERSION" \
"$PKG_PATH"
echo "Done Generating \"$APP_PATH\" with dSYM folder"