Build_IOS.sh

#!/bin/bash

if [[ -z "${LUA_UE4_VERSION}" ]]; then
  echo "LUA_UE4_VERSION is not set, exit."
  exit 1
else
  echo "LUA_UE4_VERSION: ${LUA_UE4_VERSION}"
fi

if [[ -z "${LUA_UE4_PREFIX}" ]]; then
  echo "LUA_UE4_PREFIX is not set, exit."
  exit 1
else
  echo "LUA_UE4_PREFIX: ${LUA_UE4_PREFIX}"
fi

if [[ -z "${LUA_UE4_IOS_DEPLOYMENT_TARGET}" ]]; then
  echo "LUA_UE4_IOS_DEPLOYMENT_TARGET is not set, exit."
  exit 1
else
  echo "LUA_UE4_IOS_DEPLOYMENT_TARGET: ${LUA_UE4_IOS_DEPLOYMENT_TARGET}"
fi

readonly CORE_COUNT=$(sysctl -n machdep.cpu.core_count)
readonly LUA_UE4_URL=http://www.lua.org/ftp/lua-${LUA_UE4_VERSION}.tar.gz
readonly LUA_UE4_DIR=lua-${LUA_UE4_VERSION}
readonly LUA_UE4_TAR=${LUA_UE4_DIR}.tar.gz

function change_source {
  sed -i "" 's:define LUA_IDSIZE:define LUA_IDSIZE    256  // :' luaconf.h
  ADD_NUMBER_LINE=$(sed -n -e "/without modifying the main part of the file./=" luaconf.h)
  if [[ -n ${ADD_NUMBER_LINE} ]]; then
    ADD_NUMBER_LINE=$((${ADD_NUMBER_LINE} + 2))
    sed -i '' "${ADD_NUMBER_LINE} a\ 
    #define system(s) ((s)==NULL ? 0 : -1)
    " luaconf.h
  fi
}

wget -q -O ${LUA_UE4_TAR} ${LUA_UE4_URL}
tar zxf ${LUA_UE4_TAR}
mv ./${LUA_UE4_DIR}/* .
rm -rf ${LUA_UE4_DIR}

pushd src
  change_source
popd

rm -rf ${LUA_UE4_PREFIX}
mkdir -p ${LUA_UE4_PREFIX}
mkdir -p ${LUA_UE4_PREFIX}/lib

cmake -G "Xcode" -DCMAKE_INSTALL_PREFIX="${LUA_UE4_PREFIX}" .

xcodebuild -project "lua.xcodeproj"                             \
  -target "lua_static"                                          \
  -configuration Release                                        \
  -sdk iphoneos                                                 \
  -arch arm64                                                   \
  IPHONEOS_DEPLOYMENT_TARGET=${LUA_UE4_IOS_DEPLOYMENT_TARGET}   \
  -jobs ${CORE_COUNT}                                           \
  build

xcodebuild -target install build

rm -rf ${LUA_UE4_PREFIX}/bin
rm -rf ${LUA_UE4_PREFIX}/lib/*

mv Release-iphoneos/liblua.a Release-iphoneos/liblua-arm64.a
lipo -create Release-iphoneos/liblua-arm64.a -output ${LUA_UE4_PREFIX}/lib/liblua.a

lipo -info ${LUA_UE4_PREFIX}/lib/liblua.a