# Creates fat libs of all .a files in `ARCH1_DIR` (1st param), combining .a with same name in `ARCH2_DIR` (2nd param), saving fat lib in `OUTPUT_DIR` (3rd param).
# Exit on errors
set -e
SCRIPT_DIR=$(dirname "$0")
ARCH1_DIR=$1
ARCH2_DIR=$2
OUTPUT_DIR=$3
# Get absolute paths
pushd"${SCRIPT_DIR}"
SCRIPT_DIR=$(pwd)
popd
pushd"${ARCH1_DIR}"
ARCH1_DIR=$(pwd)
popd
pushd"${ARCH2_DIR}"
ARCH2_DIR=$(pwd)
popd
pushd"${OUTPUT_DIR}"
OUTPUT_DIR=$(pwd)
popd
exitAndPrintHelp()
{
echo"Must be called with ARCH1_DIR ARCH2_DIR OUTPUT_DIR, all absolute paths."