#!/bin/sh
#
# Build a fat binary on Mac OS X, thanks Ryan!

# Number of CPUs (for make -j)
#NCPU=1
NCPU=`sysctl -n hw.ncpu`

# !!! FIXME: other CFLAGS?
# Generic, cross-platform CFLAGS you always want go here.
CFLAGS="-O3 -g -pipe"

# PowerPC compiler flags (10.2 runtime compatibility)
CC_PPC="gcc-3.3 -arch ppc"
CXX_PPC="g++-3.3 -arch ppc"
CFLAGS_PPC=""
CPPFLAGS_PPC="-DMAC_OS_X_VERSION_MIN_REQUIRED=1020 \
-nostdinc \
-F/Developer/SDKs/MacOSX10.2.8.sdk/System/Library/Frameworks \
-I/Developer/SDKs/MacOSX10.2.8.sdk/usr/include/gcc/darwin/3.3 \
-isystem /Developer/SDKs/MacOSX10.2.8.sdk/usr/include"

# PowerPC linker flags 
LFLAGS_PPC="-arch ppc \
-L/Developer/SDKs/MacOSX10.2.8.sdk/usr/lib/gcc/darwin/3.3 \
-F/Developer/SDKs/MacOSX10.2.8.sdk/System/Library/Frameworks \
-Wl,-syslibroot,/Developer/SDKs/MacOSX10.2.8.sdk"

# Intel compiler flags (10.4 runtime compatibility)
CC_X86="gcc-4.0 -arch i386"
CXX_X86="g++-4.0 -arch i386"
CFLAGS_X86="-mmacosx-version-min=10.4"
CPPFLAGS_X86="-DMAC_OS_X_VERSION_MIN_REQUIRED=1040 \
-nostdinc -fvisibility=hidden \
-F/Developer/SDKs/MacOSX10.4u.sdk/System/Library/Frameworks \
-I/Developer/SDKs/MacOSX10.4u.sdk/usr/lib/gcc/i686-apple-darwin8/4.0.1/include \
-isystem /Developer/SDKs/MacOSX10.4u.sdk/usr/include"

# Intel linker flags
LFLAGS_X86="-arch i386 -mmacosx-version-min=10.4 \
-L/Developer/SDKs/MacOSX10.4u.sdk/usr/lib/gcc/i686-apple-darwin8/4.0.0 \
-Wl,-syslibroot,/Developer/SDKs/MacOSX10.4u.sdk"

#
# Find the configure script
#
srcdir=`dirname $0`/..
auxdir=$srcdir/build-scripts
cd $srcdir

#
# Figure out which phase to build:
# all,
# configure, configure-ppc, configure-x86,
# make, make-ppc, make-x86, merge
# install
# clean
if test x"$1" = x; then
    phase=all
else
    phase="$1"
fi
case $phase in
    all)
        configure_ppc="yes"
        configure_x86="yes"
        make_ppc="yes"
        make_x86="yes"
        merge="yes"
        ;;
    configure)
        configure_ppc="yes"
        configure_x86="yes"
        ;;
    configure-ppc)
        configure_ppc="yes"
        ;;
    configure-x86)
        configure_x86="yes"
        ;;
    make)
        make_ppc="yes"
        make_x86="yes"
        merge="yes"
        ;;
    make-ppc)
        make_ppc="yes"
        ;;
    make-x86)
        make_x86="yes"
        ;;
    merge)
        merge="yes"
        ;;
    install)
        install_bin="yes"
        install_hdrs="yes"
        install_lib="yes"
        install_data="yes"
        install_man="yes"
        ;;
    install-bin)
        install_bin="yes"
        ;;
    install-hdrs)
        install_hdrs="yes"
        ;;
    install-lib)
        install_lib="yes"
        ;;
    install-data)
        install_data="yes"
        ;;
    install-man)
        install_man="yes"
        ;;
    clean)
        clean_ppc="yes"
        clean_x86="yes"
        ;;
    clean-ppc)
        clean_ppc="yes"
        ;;
    clean-x86)
        clean_x86="yes"
        ;;
    *)
        echo "Usage: $0 [all|configure[-ppc|-x86]|make[-ppc|-x86]|merge|install|clean]"
        exit 1
        ;;
esac
case `uname -p` in
    powerpc)
        native_path=ppc
        ;;
    *86)
        native_path=x86
        ;;
    *)
        echo "Couldn't figure out native architecture path"
        exit 1
        ;;
esac

#
# Create the build directories
#
for dir in build build/ppc build/x86; do
    if test -d $dir; then
        :
    else
        mkdir $dir || exit 1
    fi
done

#
# Build the PowerPC binary
#
if test x$configure_ppc = xyes; then
    (cd build/ppc && \
     sh ../../configure --build=`uname -p`-apple-darwin --host=powerpc-apple-darwin CC="$CC_PPC" CXX="$CXX_PPC" CFLAGS="$CFLAGS $CFLAGS_PPC" CPPFLAGS="$CPPFLAGS_PPC" LDFLAGS="$LFLAGS_PPC") || exit 2
fi
if test x$make_ppc = xyes; then
    (cd build/ppc && make -j$NCPU) || exit 3
fi

#
# Build the Intel binary
#
if test x$configure_x86 = xyes; then
    (cd build/x86 && \
     sh ../../configure --build=`uname -p`-apple-darwin --host=i686-apple-darwin CC="$CC_X86" CXX="$CXX_X86" CFLAGS="$CFLAGS $CFLAGS_X86" CPPFLAGS="$CPPFLAGS_X86" LDFLAGS="$LFLAGS_X86") || exit 2
fi
if test x$make_x86 = xyes; then
    (cd build/x86 && make -j$NCPU) || exit 3
fi

#
# Combine into fat binary
#
if test x$merge = xyes; then
    output=.libs
    sh $auxdir/mkinstalldirs build/$output
    cd build
    target=`find . -mindepth 3 -type f -name '*.dylib' | head -1 | sed 's|.*/||'`
    (lipo -create -o $output/$target `find . -mindepth 3 -type f -name "*.dylib"` &&
     ln -sf $target $output/libSDL-1.2.0.dylib &&
     ln -sf $target $output/libSDL.dylib &&
     lipo -create -o $output/libSDL.a */build/.libs/libSDL.a &&
     cp $native_path/build/.libs/libSDL.la $output &&
     cp $native_path/build/.libs/libSDL.lai $output &&
     cp $native_path/build/libSDL.la . &&
     lipo -create -o libSDLmain.a */build/libSDLmain.a &&
     echo "Build complete!" &&
     echo "Files can be found in the build directory.") || exit 4
    cd ..
fi

#
# Install
#
do_install()
{
    echo $*
    $* || exit 5
}
if test x$prefix = x; then
    prefix=/usr/local
fi
if test x$exec_prefix = x; then
    exec_prefix=$prefix
fi
if test x$bindir = x; then
    bindir=$exec_prefix/bin
fi
if test x$libdir = x; then
    libdir=$exec_prefix/lib
fi
if test x$includedir = x; then
    includedir=$prefix/include
fi
if test x$datadir = x; then
    datadir=$prefix/share
fi
if test x$mandir = x; then
    mandir=$prefix/man
fi
if test x$install_bin = xyes; then
    do_install sh $auxdir/mkinstalldirs $bindir
    do_install /usr/bin/install -c -m 755 build/$native_path/sdl-config $bindir/sdl-config
fi
if test x$install_hdrs = xyes; then
    do_install sh $auxdir/mkinstalldirs $includedir/SDL
    for src in $srcdir/include/*.h; do \
        file=`echo $src | sed -e 's|^.*/||'`; \
        do_install /usr/bin/install -c -m 644 $src $includedir/SDL/$file; \
    done
    do_install /usr/bin/install -c -m 644 $srcdir/include/SDL_config_macosx.h $includedir/SDL/SDL_config.h
fi
if test x$install_lib = xyes; then
    do_install sh $auxdir/mkinstalldirs $libdir
    do_install sh build/$native_path/libtool --mode=install /usr/bin/install -c  build/libSDL.la $libdir/libSDL.la
    do_install /usr/bin/install -c -m 644 build/libSDLmain.a $libdir/libSDLmain.a
    do_install ranlib $libdir/libSDLmain.a
fi
if test x$install_data = xyes; then
    do_install sh $auxdir/mkinstalldirs $datadir/aclocal
    do_install /usr/bin/install -c -m 644 $srcdir/sdl.m4 $datadir/aclocal/sdl.m4
fi
if test x$install_man = xyes; then
    do_install sh $auxdir/mkinstalldirs $mandir/man3
    for src in $srcdir/docs/man3/*.3; do \
        file=`echo $src | sed -e 's|^.*/||'`; \
        do_install /usr/bin/install -c -m 644 $src $mandir/man3/$file; \
    done
fi

#
# Clean up
#
do_clean()
{
    echo $*
    $* || exit 6
}
if test x$clean_x86 = xyes; then
    do_clean rm -r build/x86
fi
if test x$clean_ppc = xyes; then
    do_clean rm -r build/ppc
fi

