#!/bin/bash
#  Builds libidn for all three current iPhone targets: iPhoneSimulator-i386,
#  iPhoneOS-armv7, iPhoneOS-armv7s.
#
#  Copyright 2012 Mike Tigas <mike@tig.as>
#
#  Based on work by Felix Schulze on 16.12.10.
#  Copyright 2010 Felix Schulze. All rights reserved.
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#  http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
###########################################################################
#  Choose your libidn version and your currently-installed iOS SDK version:
#
VERSION="1.31"
SDKVERSION=""
MIN_VERSION="11.0"

set -x
#
#
###########################################################################
#
# Don't change anything under this line!
#
###########################################################################

# No need to change this since xcode build will only compile in the
# necessary bits from the libraries we create
# ARCHS="i386 x86_64 armv7 armv7s arm64 arm64_sim"
ARCHS="x86_64 arm64_sim arm64"

DEVELOPER=`xcode-select -print-path`

cd "`dirname \"$0\"`"
REPOROOT=$(pwd)

# Where we'll end up storing things in the end
OUTPUTDIR="${REPOROOT}/dependencies"
mkdir -p ${OUTPUTDIR}/include
mkdir -p ${OUTPUTDIR}/lib
mkdir -p ${OUTPUTDIR}/bin


BUILDDIR="${REPOROOT}/build"

# where we will keep our sources and build from.
SRCDIR="${BUILDDIR}/src"
mkdir -p $SRCDIR
# where we will store intermediary builds
INTERDIR="${BUILDDIR}/built"
mkdir -p $INTERDIR

########################################

cd $SRCDIR

# Exit the script if an error happens
set -e

if [ ! -e "${SRCDIR}/libidn-${VERSION}.tar.gz" ]; then
	echo "Downloading libidn-${VERSION}.tar.gz"
    curl -LO http://ftp.gnu.org/gnu/libidn/libidn-${VERSION}.tar.gz
else
    
	echo "Using libidn-${VERSION}.tar.gz"
fi

tar zxf libidn-${VERSION}.tar.gz -C $SRCDIR
cd "${SRCDIR}/libidn-${VERSION}"

set +e # don't bail out of bash script if ccache doesn't exist
CCACHE=`which ccache`
if [ $? == "0" ]; then
    echo "Building with ccache: $CCACHE"
    CCACHE="${CCACHE} "
else
    echo "Building without ccache"
    CCACHE=""
fi
set -e # back to regular "bail out on error" mode

for ARCH in ${ARCHS}
do

	if [[ "${ARCH}" == "i386" || "${ARCH}" == "x86_64" || "${ARCH}" == "arm64_sim" ]];
	then
		PLATFORM="iPhoneSimulator"
        EXTRA_CONFIG="--host=arm-apple-darwin10"
        EXTRA_CFLAGS="-miphonesimulator-version-min=$MIN_VERSION"
	else
		PLATFORM="iPhoneOS"
        EXTRA_CONFIG="--host=arm-apple-darwin10 --disable-asm "
        EXTRA_CFLAGS="-DNO_ASM -miphoneos-version-min=$MIN_VERSION"
#       EXTRA_CFLAGS="-fembed-bitcode -DNO_ASM"
	fi
 
    if [[ "${ARCH}" == "arm64_sim" ]];
    then
        ARCH="arm64"
    fi

	mkdir -p "${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk"

	./configure -v --disable-shared --enable-static ${EXTRA_CONFIG} \
    --prefix="${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk" \
    CC="${CCACHE}${DEVELOPER}/usr/bin/gcc -arch ${ARCH}" \
    LDFLAGS="$LDFLAGS -L${OUTPUTDIR}/lib" \
    CFLAGS="$CFLAGS ${EXTRA_CFLAGS} -I${OUTPUTDIR}/include -isysroot ${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERSION}.sdk" \
    CPPFLAGS="$CPPFLAGS -I${OUTPUTDIR}/include -isysroot ${DEVELOPER}/Platforms/${PLATFORM}.platform/Developer/SDKs/${PLATFORM}${SDKVERSION}.sdk"

    # Build the application and install it to the fake SDK intermediary dir
    # we have set up. Make sure to clean up afterward because we will re-use
    # this source tree to cross-compile other targets.
	make -j8
	make install
	make clean
done

########################################

echo "Build library..."

# These are the libs that comprise libidn.
OUTPUT_LIBS="libidn.a"
for OUTPUT_LIB in ${OUTPUT_LIBS}; do
    INPUT_LIBS=""
    for ARCH in ${ARCHS}; do
        if [[ "${ARCH}" == "i386" || "${ARCH}" == "x86_64" || "${ARCH}" == "arm64_sim" ]];
        then
            PLATFORM="iPhoneSimulator"
        else
            PLATFORM="iPhoneOS"
        fi
        
        if [[ "${ARCH}" == "arm64_sim" ]];
        then
            ARCH="arm64"
        fi
        
        INPUT_ARCH_LIB="${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk/lib/${OUTPUT_LIB}"
        if [ -e $INPUT_ARCH_LIB ]; then
            INPUT_LIBS="${INPUT_LIBS} ${INPUT_ARCH_LIB}"
        fi
    done
    # # Combine the three architectures into a universal library.
    # if [ -n "$INPUT_LIBS"  ]; then
    #     lipo -create $INPUT_LIBS \
    #     -output "${OUTPUTDIR}/lib/${OUTPUT_LIB}"
    # else
    #     echo "$OUTPUT_LIB does not exist, skipping (are the dependencies installed?)"
    # fi

    echo "libs location:"
    echo $INPUT_LIBS
done

for ARCH in ${ARCHS}; do
    if [[ "${ARCH}" == "i386" || "${ARCH}" == "x86_64" || "${ARCH}" == "arm64_sim" ]];
    then
        PLATFORM="iPhoneSimulator"
    else
        PLATFORM="iPhoneOS"
    fi
    
    if [[ "${ARCH}" == "arm64_sim" ]];
    then
        ARCH="arm64"
    fi
        
    cp -R ${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk/include/* ${OUTPUTDIR}/include/
    if [ $? == "0" ]; then
        # We only need to copy the headers over once. (So break out of forloop
        # once we get first success.)
        break
    fi
done

for ARCH in ${ARCHS}; do
    if [[ "${ARCH}" == "i386" || "${ARCH}" == "x86_64" || "${ARCH}" == "arm64_sim" ]];
    then
        PLATFORM="iPhoneSimulator"
    else
        PLATFORM="iPhoneOS"
    fi
    
    if [[ "${ARCH}" == "arm64_sim" ]];
    then
        ARCH="arm64"
    fi
    
    cp -R ${INTERDIR}/${PLATFORM}${SDKVERSION}-${ARCH}.sdk/bin/* ${OUTPUTDIR}/bin/
    if [ $? == "0" ]; then
        # We only need to copy the binaries over once. (So break out of forloop
        # once we get first success.)
        break
    fi
done

####################

echo "Building done."
#echo "Cleaning up..."
#rm -fr ${INTERDIR}
#rm -fr "${SRCDIR}/libidn-${VERSION}"
echo "Done."