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Adds a simple command line utility (iosbuild.sh) to create iOS binari…

…es for armv6, armv7 and i386
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gabomdq committed Jun 19, 2012
1 parent 0f03367 commit 3fedc78bf37c511b43ce75f06db8c8ae14dbb27f
Showing with 297 additions and 0 deletions.
  1. +20 −0 README.iOS
  2. +277 −0 build-scripts/iosbuild.sh
@@ -16,6 +16,26 @@ There are three build targets:
- Template:
Package a project template together with the SDL for iPhone static libraries and copies of the SDL headers. The template includes proper references to the SDL library and headers, skeleton code for a basic SDL program, and placeholder graphics for the application icon and startup screen.

==============================================================================
Build SDL for iOS from the command line
==============================================================================

1. cd (PATH WHERE THE SDL CODE IS)/build-scripts
2. ./iosbuild.sh

If everything goes fine, you should see a build/ios directory, inside there's
two directories "lib" and "include".
"include" contains a copy of the SDL headers that you'll need for your project,
make sure to configure XCode to look for headers there.
"lib" contains find two files, libSDL2.a and libSDL2main.a, you have to add both
to your XCode project. These libraries contain three architectures in them,
armv6 for legacy devices, armv7, and i386 (for the simulator).
By default, iosbuild.sh will autodetect the SDK version you have installed using
xcodebuild -showsdks, and build for iOS >= 3.0, you can override this behaviour
by setting the MIN_OS_VERSION variable, ie:

MIN_OS_VERSION=4.2 ./iosbuild.sh

==============================================================================
Using the Simple DirectMedia Layer for iOS
==============================================================================
@@ -0,0 +1,277 @@
#!/bin/sh
#
# Build a fat binary for iOS
# Based on fatbuild.sh and code from the Ignifuga Game Engine

# Number of CPUs (for make -j)
NCPU=`sysctl -n hw.ncpu`
if test x$NJOB = x; then
NJOB=$NCPU
fi

# SDK path
XCODE_PATH=`xcode-select --print-path`
if [ -z "$XCODE_PATH" ]; then
echo "Could not find XCode location"
exit 1
fi

prepare_environment() {
ARCH=$1

if test x$SDK_VERSION = x; then
export SDK_VERSION=`xcodebuild -showsdks | grep iphoneos | sed "s|.*iphoneos||"`
if [ -z "$XCODE_PATH" ]; then
echo "Could not find a valid iOS SDK"
exit 1
fi
fi

case $ARCH in
armv6)
DEV_PATH="$XCODE_PATH/Platforms/iPhoneOS.platform/Developer"
SDK_PATH="$DEV_PATH/SDKs/iPhoneOS$SDK_VERSION.sdk"
;;
armv7)
DEV_PATH="$XCODE_PATH/Platforms/iPhoneOS.platform/Developer"
SDK_PATH="$DEV_PATH/SDKs/iPhoneOS$SDK_VERSION.sdk"
;;
i386)
DEV_PATH="$XCODE_PATH/Platforms/iPhoneSimulator.platform/Developer"
SDK_PATH="$DEV_PATH/SDKs/iPhoneSimulator$SDK_VERSION.sdk"
;;
*)
echo "Unknown Architecture $ARCH"
exit 1
;;
esac

if [ ! -d "$SDK_PATH" ]; then
echo "Could not find iOS SDK at $SDK_PATH"
exit 1
fi

if test x$MIN_OS_VERSION = x; then
export MIN_OS_VERSION="3.0"
fi

# Environment flags
CFLAGS="-g -O2 -pipe -no-cpp-precomp -isysroot $SDK_PATH \
-miphoneos-version-min=$MIN_OS_VERSION -I$SDK_PATH/usr/include/"
LDFLAGS="-L$SDK_PATH/usr/lib/ -isysroot $SDK_PATH \
-miphoneos-version-min=$MIN_OS_VERSION -static-libgcc"
export CXXFLAGS="$CFLAGS"
export CXXCPP="$DEV_PATH/usr/bin/llvm-cpp-4.2"
export CPP="$CXXCPP"
export CXX="$DEV_PATH/usr/bin/llvm-g++-4.2"
export CC="$DEV_PATH/usr/bin/llvm-gcc-4.2"
export LD="$DEV_PATH/usr/bin/ld"
export AR="$DEV_PATH/usr/bin/ar"
export AS="$DEV_PATH/usr/bin/ls"
export NM="$DEV_PATH/usr/bin/nm"
export RANLIB="$DEV_PATH/usr/bin/ranlib"
export STRIP="$DEV_PATH/usr/bin/strip"

# We dynamically load X11, so using the system X11 headers is fine.
CONFIG_FLAGS="--disable-shared --enable-static"

case $ARCH in
armv6)
export CONFIG_FLAGS="$CONFIG_FLAGS --host=armv6-apple-darwin"
export CFLAGS="$CFLAGS -arch armv6"
export LDFLAGS="$LDFLAGS -arch armv6"
;;
armv7)
export CONFIG_FLAGS="$CONFIG_FLAGS --host=armv7-apple-darwin"
export CFLAGS="$CFLAGS -arch armv7"
export LDFLAGS="$LDFLAGS -arch armv7"
;;
i386)
export CONFIG_FLAGS="$CONFIG_FLAGS --host=i386-apple-darwin"
export CFLAGS="$CFLAGS -arch i386"
export LDFLAGS="$LDFLAGS -arch i386"
;;
*)
echo "Unknown Architecture $ARCH"
exit 1
;;
esac
}

prepare_environment "armv6"
echo "Building with iOS SDK v$SDK_VERSION for iOS >= $MIN_OS_VERSION"

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

#
# Figure out which phase to build:
# all,
# configure, configure-armv6, configure-armv7, configure-i386
# make, make-armv6, make-armv7, make-i386, merge
# clean
if test x"$1" = x; then
phase=all
else
phase="$1"
fi
case $phase in
all)
configure_armv6="yes"
configure_armv7="yes"
configure_i386="yes"
make_armv6="yes"
make_armv7="yes"
make_i386="yes"
merge="yes"
;;
configure)
configure_armv6="yes"
configure_armv7="yes"
configure_i386="yes"
;;
configure-armv6)
configure_armv6="yes"
;;
configure-armv7)
configure_armv7="yes"
;;
configure-i386)
configure_i386="yes"
;;
make)
make_armv6="yes"
make_armv7="yes"
make_i386="yes"
merge="yes"
;;
make-armv6)
make_armv6="yes"
;;
make-armv7)
make_armv7="yes"
;;
make-i386)
make_i386="yes"
;;
merge)
merge="yes"
;;
clean)
clean_armv6="yes"
clean_armv7="yes"
clean_i386="yes"
;;
clean-armv6)
clean_armv6="yes"
;;
clean-armv7)
clean_armv7="yes"
;;
clean-i386)
clean_i386="yes"
;;
*)
echo "Usage: $0 [all|configure[-armv6|-armv7|-i386]|make[-armv6|-armv7|-i386]|merge|clean[-armv6|-armv7|-i386]]"
exit 1
;;
esac

#
# Create the build directories
#
for dir in build build/armv6 build/armv7 build/i386; do
if test -d $dir; then
:
else
mkdir $dir || exit 1
fi
done

#
# Build the armv6 binary
#
prepare_environment "armv6"
if test x$configure_armv6 = xyes; then
(cd build/armv6 && \
sh ../../configure $CONFIG_FLAGS CC="$CC" CXX="$CXX" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS") || exit 2
# configure is not yet fully ready for iOS, some manual patching is required
cp include/* build/armv6/include
cp include/SDL_config_iphoneos.h build/armv6/include/SDL_config.h || exit 2
sed -i "" -e "s|^EXTRA_CFLAGS.*|EXTRA_CFLAGS=-I./include|g" build/armv6/Makefile || exit 2
sed -i "" -e "s|^EXTRA_LDFLAGS.*|EXTRA_LDFLAGS=-lm|g" build/armv6/Makefile || exit 2
fi
if test x$make_armv6 = xyes; then
(cd build/armv6 && make -j$NJOB) || exit 3
fi
#
# Build the armv7 binary
#
prepare_environment "armv7"
if test x$configure_armv7 = xyes; then
(cd build/armv7 && \
sh ../../configure $CONFIG_FLAGS CC="$CC" CXX="$CXX" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS") || exit 2
# configure is not yet fully ready for iOS, some manual patching is required
cp include/* build/armv7/include
cp include/SDL_config_iphoneos.h build/armv7/include/SDL_config.h || exit 2
sed -i "" -e "s|^EXTRA_CFLAGS.*|EXTRA_CFLAGS=-I./include|g" build/armv7/Makefile || exit 2
sed -i "" -e "s|^EXTRA_LDFLAGS.*|EXTRA_LDFLAGS=-lm|g" build/armv7/Makefile || exit 2
fi
if test x$make_armv7 = xyes; then
(cd build/armv7 && make -j$NJOB) || exit 3
fi
#
# Build the i386 binary
#
prepare_environment "i386"
if test x$configure_i386 = xyes; then
(cd build/i386 && \
sh ../../configure $CONFIG_FLAGS CC="$CC" CXX="$CXX" CFLAGS="$CFLAGS" LDFLAGS="$LDFLAGS") || exit 2
# configure is not yet fully ready for iOS, some manual patching is required
cp include/* build/i386/include
cp include/SDL_config_iphoneos.h build/i386/include/SDL_config.h || exit 2
sed -i "" -e "s|^EXTRA_CFLAGS.*|EXTRA_CFLAGS=-I./include|g" build/i386/Makefile || exit 2
sed -i "" -e "s|^EXTRA_LDFLAGS.*|EXTRA_LDFLAGS=-lm|g" build/i386/Makefile || exit 2
fi
if test x$make_i386 = xyes; then
(cd build/i386 && make -j$NJOB) || exit 3
fi

#
# Combine into fat binary
#
if test x$merge = xyes; then
output=ios/lib
sh $auxdir/mkinstalldirs build/$output
cd build
target=`find . -mindepth 4 -maxdepth 4 -type f -name '*.dylib' | head -1 | sed 's|.*/||'`
(lipo -create -o $output/libSDL2.a */build/.libs/libSDL2.a &&
lipo -create -o $output/libSDL2main.a */build/libSDL2main.a &&
cp -r armv6/include ios
echo "Build complete!" &&
echo "Files can be found under the build/ios directory.") || exit 4
cd ..
fi

#
# Clean up
#
do_clean()
{
echo $*
$* || exit 6
}
if test x$clean_armv6 = xyes; then
do_clean rm -r build/armv6
fi
if test x$clean_armv7 = xyes; then
do_clean rm -r build/armv7
fi
if test x$clean_i386 = xyes; then
do_clean rm -r build/i386
fi

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