#! /bin/bash
set -e

# If we are on Mac OS X, do a universal build
if [ `uname` == "Darwin" ]; then
  # On older versions of Mac OS X, look for the latest SDK
  if [ -d /Developer/SDKs ]; then
    LATEST_SDK=''
    for sdk_dir in /Developer/SDKs/*; do
      LATEST_SDK=$sdk_dir
    done
    if [[ $LATEST_SDK == /Developer/SDKs/MacOSX10.4u.sdk ]]; then
      # Check if we have an old gcc on Mac OS 10.4 (from XCode < 2.4) which did not support x86_64
      gcc -arch x86_64 -v
      if [ $? -eq 0 ]; then
        export CFLAGS='-arch i386 -arch ppc -arch x86_64 -arch ppc64'
        export LDFLAGS='-arch i386 -arch ppc -arch x86_64 -arch ppc64'
      else
        export CFLAGS='-arch i386 -arch ppc -arch ppc64'
        export LDFLAGS='-arch i386 -arch ppc -arch ppc64'
      fi
    elif [[ $LATEST_SDK == /Developer/SDKs/MacOSX10.5.sdk ]]; then
      export CFLAGS='-isysroot '${LATEST_SDK}' -arch i386 -arch ppc -arch x86_64 -arch ppc64'
      export LDFLAGS='-syslibroot,'${LATEST_SDK}' -arch i386 -arch ppc -arch x86_64 -arch ppc64'
    else
      # Starting with 10.6 (Snow Leopard), only Intel architecture is supported
      export CFLAGS='-isysroot '${LATEST_SDK}' -arch i386 -arch x86_64'
      export LDFLAGS='-syslibroot,'${LATEST_SDK}' -arch i386 -arch x86_64'
    fi
  else
    # Starting with 10.7 (Lion) and Xcode 4.3, the SDK is inside the Xcode.app - ignore it
    export CFLAGS='-arch i386 -arch x86_64'
    export LDFLAGS='-arch i386 -arch x86_64'
  fi
fi

rm -rf readline-lib
tar xzvf readline-6.2.tar.gz
mv readline-6.2 readline-lib
cd readline-lib
patch -p0 < ../readline62-001
patch -p0 < ../readline62-002
patch -p0 < ../readline62-003
patch -p0 < ../readline62-004
./configure CPPFLAGS='-DNEED_EXTERN_PC -fPIC'
make