#!/usr/bin/env bash
#***************************************************************************
#                                  _   _ ____  _
#  Project                     ___| | | |  _ \| |
#                             / __| | | | |_) | |
#                            | (__| |_| |  _ <| |___
#                             \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################

set -eu

# This script performs all of the steps needed to build a
# universal binary libcurl.framework for Mac OS X 10.4 or greater.
#
# Hendrik Visage:
#  Generalizations added since Snow Leopard (10.6) do not include the 10.4 SDK.
#
# Also note:
# 10.5 is the *ONLY* SDK that support PPC64 :( -- 10.6 do not have PPC64 support
# If you need to have PPC64 support then change below to 1
PPC64_NEEDED=0
# Apple does not support building for PPC anymore in Xcode 4 and later.
# If you are using Xcode 3 or earlier and need PPC support, then change
# the setting below to 1
PPC_NEEDED=0

# For me the default is to develop for the platform I am on, and if you
# desire compatibility with older versions then change USE_OLD to 1 :)
USE_OLD=0

VERSION=$(/usr/bin/sed -ne \
  's/^#define LIBCURL_VERSION "\(.*\)"/\1/p' include/curl/curlver.h)
FRAMEWORK_VERSION=Versions/Release-$VERSION

# I also wanted to "copy over" the system, and thus the reason I added the
# version to Versions/Release-7.20.1 etc.
# now a simple rsync -vaP libcurl.framework /Library/Frameworks will install it
# and setup the right paths to this version, leaving the system version
# "intact", so you can "fix" it later with the links to Versions/A/...

DEVELOPER_PATH=$(xcode-select --print-path)
# Around Xcode 4.3, SDKs were moved from the Developer folder into the
# MacOSX.platform folder
if test -d "$DEVELOPER_PATH/Platforms/MacOSX.platform/Developer/SDKs"; then
  SDK_PATH="$DEVELOPER_PATH/Platforms/MacOSX.platform/Developer/SDKs"
else
  SDK_PATH="$DEVELOPER_PATH/SDKs"
fi
# FIXME
# shellcheck disable=SC2012
OLD_SDK=$(ls    "$SDK_PATH" | head -1)
# FIXME
# shellcheck disable=SC2012
NEW_SDK=$(ls -r "$SDK_PATH" | head -1)

if test "0$USE_OLD" -gt 0; then
  SDK32=$OLD_SDK
else
  SDK32=$NEW_SDK
fi

SDK32_DIR=$SDK_PATH/$SDK32
if test "$PPC_NEEDED" -gt 0; then
  ARCHES32='-arch i386 -arch ppc'
else
  ARCHES32='-arch i386'
fi

if test "$PPC64_NEEDED" -gt 0; then
  SDK64=10.5
  ARCHES64='-arch x86_64 -arch ppc64'
  # FIXME
  # shellcheck disable=SC2010
  SDK64=$(ls "$SDK_PATH" | grep "10\.5" | head -1)
else
  ARCHES64='-arch x86_64'
  # We "know" that 10.4 and earlier do not support 64-bit
  # FIXME
  # shellcheck disable=SC2010
  OLD_SDK64=$(ls    "$SDK_PATH" | grep -v "10\.[0-4]" | head -1)
  # FIXME
  # shellcheck disable=SC2010
  NEW_SDK64=$(ls -r "$SDK_PATH" | grep -v "10\.[0-4][^0-9]" | head -1)
  if test "$USE_OLD" -gt 0; then
    SDK64=$OLD_SDK64
  else
    SDK64=$NEW_SDK64
  fi
fi

SDK64_DIR=$SDK_PATH/$SDK64

if test ! -z "$SDK32"; then
  echo "----Configuring libcurl for 32-bit universal framework..."
  make clean
  ./configure --disable-dependency-tracking --disable-static --with-gssapi --with-secure-transport \
    CFLAGS="-Os -isysroot $SDK32_DIR $ARCHES32" \
    LDFLAGS="-Wl,-syslibroot,$SDK32_DIR $ARCHES32 -Wl,-headerpad_max_install_names" \
    CC="$CC"

  echo "----Building 32-bit libcurl..."
  make -j "$(sysctl -n hw.logicalcpu_max)"

  echo "----Creating 32-bit framework..."
  rm -r libcurl.framework
  mkdir -p "libcurl.framework/${FRAMEWORK_VERSION}/Resources"
  cp lib/.libs/libcurl.dylib "libcurl.framework/${FRAMEWORK_VERSION}/libcurl"
  install_name_tool -id "@rpath/libcurl.framework/${FRAMEWORK_VERSION}/libcurl" "libcurl.framework/${FRAMEWORK_VERSION}/libcurl"
  cp lib/libcurl.plist "libcurl.framework/${FRAMEWORK_VERSION}/Resources/Info.plist"
  mkdir -p "libcurl.framework/${FRAMEWORK_VERSION}/Headers/curl"
  cp include/curl/*.h "libcurl.framework/${FRAMEWORK_VERSION}/Headers/curl"
  pushd libcurl.framework
  ln -fs "${FRAMEWORK_VERSION}/libcurl" libcurl
  ln -fs "${FRAMEWORK_VERSION}/Resources" Resources
  ln -fs "${FRAMEWORK_VERSION}/Headers" Headers
  cd Versions
  ln -fs "$(basename "${FRAMEWORK_VERSION}")" Current
  popd

  echo Testing for SDK64
  if test -d "$SDK64_DIR"; then
    echo entering...
    make clean
    echo "----Configuring libcurl for 64-bit universal framework..."
    ./configure --disable-dependency-tracking --disable-static --with-gssapi --with-secure-transport \
      CFLAGS="-Os -isysroot $SDK64_DIR $ARCHES64" \
      LDFLAGS="-Wl,-syslibroot,$SDK64_DIR $ARCHES64 -Wl,-headerpad_max_install_names" \
      CC="$CC"

    echo "----Building 64-bit libcurl..."
    make -j "$(sysctl -n hw.logicalcpu_max)"

    echo "----Appending 64-bit framework to 32-bit framework..."
    cp lib/.libs/libcurl.dylib "libcurl.framework/${FRAMEWORK_VERSION}/libcurl64"
    install_name_tool -id "@rpath/libcurl.framework/${FRAMEWORK_VERSION}/libcurl" "libcurl.framework/${FRAMEWORK_VERSION}/libcurl64"
    cp "libcurl.framework/${FRAMEWORK_VERSION}/libcurl" "libcurl.framework/${FRAMEWORK_VERSION}/libcurl32"
    pwd
    lipo "libcurl.framework/${FRAMEWORK_VERSION}/libcurl32" "libcurl.framework/${FRAMEWORK_VERSION}/libcurl64" -create -output "libcurl.framework/${FRAMEWORK_VERSION}/libcurl"
    rm "libcurl.framework/${FRAMEWORK_VERSION}/libcurl32" "libcurl.framework/${FRAMEWORK_VERSION}/libcurl64"
  fi

  pwd
  lipo -info "libcurl.framework/${FRAMEWORK_VERSION}/libcurl"
  echo "libcurl.framework is built and can now be included in other projects."
  echo "Copy libcurl.framework to your bundle's Contents/Frameworks folder, ~/Library/Frameworks or /Library/Frameworks."
else
  echo "Building libcurl.framework requires Mac OS X 10.4 or later with Mac OS X 10.4/5/6 SDK installed."
fi