Download & Compile Libjpeg for OSX (all architectures)

libjpeg.sh

# Builds a Libjpeg framework for the OSX.
# This is a fork from:
# https://gist.github.com/dulaccc/25dbe620422c07e0253e
#===============================================================================
export SDKROOT="/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.5.sdk"
: ${LIB_VERSION:=8d}

: ${XCODE_ROOT:=`xcode-select -print-path`}

: ${TARBALLDIR:=`pwd`}
: ${SRCDIR:=`pwd`/src}
: ${OSXBUILDDIR:=`pwd`/osx/build}
: ${OSXPREFIXDIR:=`pwd`/osx/prefix}
: ${OSXFRAMEWORKDIR:=`pwd`/osx/framework}

LIB_TARBALL=$TARBALLDIR/jpegsrc.v$LIB_VERSION.tar.gz
LIB_SRC=$SRCDIR/jpeg-${LIB_VERSION}

#===============================================================================
OXS_DEV_CMD="xcrun --sdk macosx10.5"


#===============================================================================
# Functions
#===============================================================================

abort()
{
    echo
    echo "Aborted: $@"
    exit 1
}

doneSection()
{
    echo
    echo "================================================================="
    echo "Done"
    echo
}

#===============================================================================

cleanEverythingReadyToStart()
{
    echo Cleaning everything before we start to build...

    rm -rf $PREFIXDIR
    rm -rf $OSXFRAMEWORKDIR/$FRAMEWORK_NAME.framework

    doneSection
}

#===============================================================================

downloadLibjpeg()
{
    if [ ! -s $LIB_TARBALL ]; then
        echo "Downloading libjpeg ${LIB_VERSION}"
        curl -L -o $LIB_TARBALL http://www.ijg.org/files/jpegsrc.v${LIB_VERSION}.tar.gz
    fi

    doneSection
}

#===============================================================================

unpackLibjpeg()
{
    [ -f "$LIB_TARBALL" ] || abort "Source tarball missing."

    echo Unpacking libjpeg into $SRCDIR...

    [ -d $SRCDIR ]    || mkdir -p $SRCDIR
    [ -d $LIB_SRC ] || ( cd $SRCDIR; tar xfj $LIB_TARBALL )
    [ -d $LIB_SRC ] && echo "    ...unpacked as $LIB_SRC"

    doneSection
}

#===============================================================================

buildLibjpegForOSX()
{
    export CC=$XCODE_ROOT/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang
    export CC_BASENAME=clang

    export CXX=$XCODE_ROOT/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++
    export CXX_BASENAME=clang++

    echo Building Libjpeg for OSX
    mkdir -p $LIB_SRC/osx-build
    cd $LIB_SRC/osx-build
    export MACOSX_DEPLOYMENT_TARGET=10.5
    export CFLAGS="-O3 -arch i386 -arch x86_64 -target i386-apple-darwin9.0  -isysroot $XCODE_ROOT/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.5.sdk -Wno-error-implicit-function-declaration"
    ../configure --target i386-apple-darwin9.0 --build i386-apple-darwin9.0 --prefix=$OSXPREFIXDIR/osx-build --disable-dependency-tracking --enable-static=yes --enable-shared=no CFLAGS="-isysroot $XCODE_ROOT/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.5.sdk"
    make clean
    make
    make install
    doneSection
}

#===============================================================================

scrunchAllLibsTogetherInOneLibPerPlatform()
{
    cd $OSXPREFIXDIR

    # OSX
    mkdir -p $OSXBUILDDIR/i386
    mkdir -p $OSXBUILDDIR/x86_64

    echo Splitting all existing fat binaries...

    $OSX_DEV_CMD lipo "osx-build/lib/libjpeg.a" -thin i386 -o $OSXBUILDDIR/i386/libjpeg.a
    $OSX_DEV_CMD lipo "osx-build/lib/libjpeg.a" -thin x86_64 -o $OSXBUILDDIR/x86_64/libjpeg.a
}

#===============================================================================
buildFramework()
{
    : ${1:?}
    FRAMEWORKDIR=$1
    BUILDDIR=$2

    VERSION_TYPE=Alpha
    FRAMEWORK_NAME=libjpeg
    FRAMEWORK_VERSION=A

    FRAMEWORK_CURRENT_VERSION=$LIB_VERSION
    FRAMEWORK_COMPATIBILITY_VERSION=$LIB_VERSION

    FRAMEWORK_BUNDLE=$FRAMEWORKDIR/$FRAMEWORK_NAME.framework
    echo "Framework: Building $FRAMEWORK_BUNDLE from $BUILDDIR..."

    rm -rf $FRAMEWORK_BUNDLE

    echo "Framework: Setting up directories..."
    mkdir -p $FRAMEWORK_BUNDLE
    mkdir -p $FRAMEWORK_BUNDLE/Versions
    mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION
    mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/Resources
    mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/Headers
    mkdir -p $FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/Documentation

    echo "Framework: Creating symlinks..."
    ln -s $FRAMEWORK_VERSION               $FRAMEWORK_BUNDLE/Versions/Current
    ln -s Versions/Current/Headers         $FRAMEWORK_BUNDLE/Headers
    ln -s Versions/Current/Resources       $FRAMEWORK_BUNDLE/Resources
    ln -s Versions/Current/Documentation   $FRAMEWORK_BUNDLE/Documentation
    ln -s Versions/Current/$FRAMEWORK_NAME $FRAMEWORK_BUNDLE/$FRAMEWORK_NAME

    FRAMEWORK_INSTALL_NAME=$FRAMEWORK_BUNDLE/Versions/$FRAMEWORK_VERSION/$FRAMEWORK_NAME

    echo "Lipoing library into $FRAMEWORK_INSTALL_NAME..."
    $OSX_DEV_CMD lipo -create $OSXBUILDDIR/*/libjpeg.a -o "$FRAMEWORK_INSTALL_NAME" || abort "Lipo $1 failed"

    echo "Framework: Copying includes..."
    cp -r $OSXPREFIXDIR/osx-build/include/*  $FRAMEWORK_BUNDLE/Headers/

    echo "Framework: Creating plist..."
    cat > $FRAMEWORK_BUNDLE/Resources/Info.plist <<EOF
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>English</string>
<key>CFBundleExecutable</key>
<string>${FRAMEWORK_NAME}</string>
<key>CFBundleIdentifier</key>
<string>org.libjpeg</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundlePackageType</key>
<string>FMWK</string>
<key>CFBundleSignature</key>
<string>????</string>
<key>CFBundleVersion</key>
<string>${FRAMEWORK_CURRENT_VERSION}</string>
</dict>
</plist>
EOF

    doneSection
}

#===============================================================================
# Execution starts here
#===============================================================================

mkdir -p $OSXBUILDDIR

# cleanEverythingReadyToStart #may want to comment if repeatedly running during dev

echo "LIB_VERSION:       $LIB_VERSION"
echo "LIB_SRC:           $LIB_SRC"
echo "OSXBUILDDIR:       $OSXBUILDDIR"
echo "PREFIXDIR:         $PREFIXDIR"
echo "IOSFRAMEWORKDIR:   $IOSFRAMEWORKDIR"
echo "IPHONE_SDKVERSION: $IPHONE_SDKVERSION"
echo "XCODE_ROOT:        $XCODE_ROOT"
echo

downloadLibjpeg
unpackLibjpeg
buildLibjpegForOSX
scrunchAllLibsTogetherInOneLibPerPlatform
buildFramework $OSXFRAMEWORKDIR $OSXBUILDDIR

echo "Completed successfully"

#===============================================================================