A macOS/iOS universal fping binary building script.

build-fping.sh

#!/bin/sh
# shellcheck disable=SC2044,SC2046,SC2086,SC3009

SRC=$(pwd)/fping-5.1
DST=$(pwd)/fping.builds
XCODE_DIR=$(xcode-select -p)

echo "Downloading fping..."
curl -s -L https://github.com/schweikert/fping/releases/download/v5.1/fping-5.1.tar.gz | tar xz

echo "Building for macOS..."
for ARCH in x86_64 arm64; do
  PREFIX="$DST/tmp/macosx-$ARCH"
  mkdir -p "$PREFIX" && cd "$PREFIX" || exit 1

  if [ $ARCH = "arm64" ]; then
    HOST="arm"
  else
    HOST="$ARCH"
  fi

  export CFLAGS="-O2 -arch $ARCH"
  export LDFLAGS="-arch $ARCH"

  $SRC/configure --srcdir=$SRC --host=$HOST-apple-darwin --prefix=$PREFIX || exit 1
  cd ${PREFIX} && make install || exit 1
done

echo "Building for iOS..."
for ARCH in armv7 armv7s arm64; do
  PREFIX="$DST/tmp/iphoneos-$ARCH"
  mkdir -p "$PREFIX" && cd "$PREFIX" || exit 1

  export DEVELOPER="$XCODE_DIR/Platforms/iPhoneOS.platform/Developer"
  export SDK="$DEVELOPER/SDKs/iPhoneOS.sdk"
  export CFLAGS="-O2 -arch $ARCH -isysroot $SDK"
  export LDFLAGS="-arch $ARCH -isysroot $SDK"

  $SRC/configure --srcdir=$SRC --host=arm-apple-darwin --prefix=$PREFIX || exit 1
  cd $PREFIX && make install || exit 1
done

echo "Creating universal binaries..."
for PLATFORM in macosx iphoneos; do
  lipo -create $(find $DST/tmp/$PLATFORM-*/sbin -name fping) -output "$DST/fping-$PLATFORM"
done