A macOS/iOS universal iperf3 binary building script.

build-iperf.sh

#!/bin/sh

export SRC="$(pwd)/iperf"
export DST="$(pwd)/iperf.builds"
export XCODE_DIR="$(xcode-select -p)"

echo "Checking out iperf..."
git clone https://github.com/esnet/iperf.git --depth 1 --branch 3.13

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

  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 --disable-shared || 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"

  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 --disable-shared || exit 1
  sed -i '' "s/#define HAVE_ENDIAN_H 1/#undef HAVE_ENDIAN_H/g" "src/iperf_config.h"
  cd $PREFIX && make install || exit 1
done

echo "Creating universal binaries..."
for PLATFORM in macosx iphoneos; do
  lipo -create $(find $DST/tmp/$PLATFORM-*/bin -name iperf3) -output "$DST/iperf3-$PLATFORM"
done