Build the toolchain for iPhone 2.0.x on MacOSX 10.5.x

Posted on | agosto 12, 2008 | 10 Comments

Hi guys !!!
this is another (!?!?!?!) document on how to compile a toolchain for iPhone (with firmware 2.0.x) on MaxOSX 10.5.x. First of all, why a new document ?!?!?!? Simple question and simple response: “Because other documents I found on Internet don’t work for me, so I decided to mix infoz from the NET and try to make my toolchain… and… finally it works !!!!!”

Most info about toolchain compilation I get from this good article from Saurik, NerveGas and Drudge.

First of all, you need terminal access to your Mac. If you don’t known how made an ssh/shell access, well… go away
Now, I hope you have installed bison, flex and a svn client… It’s OK ?!?!? Do you have ?!?!? OK… let’s go !!

Create a new directory iPhoneDevel and go on with llvm.
Now, from shell:

svn co http://llvm.org/svn/llvm-project/llvm/trunk llvm-svn -r 42498
pushd llvm-svn
./configure --enable-optimized
make ENABLE_OPTIMIZED=1
sudo make install
LLVMOBJDIR=`pwd`
popd

If you want to known why you’re still relegate to release 42498 of llvm, you need to read these.

Now, it’s time to checkout some iPhone devel tools:

svn checkout http://iphone-dev.googlecode.com/svn/trunk/ iphone-dev
pushd iphone-dev
pushd include
svn switch http://iphone-dev.googlecode.com/svn/branches/include-1.2-sdk
popd
pushd odcctools
svn switch http://iphone-dev.googlecode.com/svn/branches/odcctools-9.2-ld
popd
sudo mkdir -p /usr/local/arm-apple-darwin
mkdir -p build/odcctools
pushd build/odcctools
../../odcctools/configure --target=arm-apple-darwin --disable-ld64

I compile for arm-apple-darwin platform, you can safely change this target with whatever you want .
Now, check if you have MacOSX 10.4u SDK (if not, simply download iphone SDK from Apple Site and install everything). If so, simply write this on shell:

export INCPRIVEXT="-isysroot /Developer/SDKs/MacOSX10.4u.sdk"

Now, compile party

make
sudo make install
popd

Ok, first BIG step is gone. Now it’s time to get iPhone FileSystem and mount to /usr/local/share/iphone-filesystem. If you don’t known how to obtain correct File System, simply read this document.
I assume you mounted correctly undecrypted dmg image so, go on mounting iPhone FS and compiling toolchain.

sudo ln -s /Volumes/BigBear5A347.M68OS /usr/local/share/iphone-filesystem
export HEAVENLY=/usr/local/share/iphone-filesystem
pushd include
./configure --with-macosx-sdk=/Developer/SDKs/MacOSX10.4u.sdk
sudo bash install-headers.sh
popd
mkdir -p build/csu
pushd build/csu
../../csu/configure --host=arm-apple-darwin
sudo make install
popd

By now I tried successfully to compile gcc 4.0 with MacOSX 10.4u headers, so document I wrote assume you have downloaded and correctly installed these. I try to compile gcc 4.2 with 10.5.x headers and, if all was ok, I update this guide… stay tuneeeeeeeeeeeeeeed

Let’s go:

mv llvm-gcc-4.0-iphone/configure llvm-gcc-4.0-iphone/configure.old
sed 's/^FLAGS_FOR_TARGET=$/FLAGS_FOR_TARGET=${FLAGS_FOR_TARGET-}/g' llvm-gcc-4.0-iphone/configure.old > llvm-gcc-4.0-iphone/configure
sudo ln -s /usr/local/arm-apple-darwin/lib/crt1.o \/usr/local/arm-apple-darwin/lib/crt1.10.5.o
mkdir -p build/llvm-gcc-4.0-iphone
pushd build/llvm-gcc-4.0-iphone
export FLAGS_FOR_TARGET="-mmacosx-version-min=10.1"
sh ../../llvm-gcc-4.0-iphone/configure --enable-llvm=`llvm-config --obj-root` \
--enable-languages=c,c++,objc,obj-c++ --target=arm-apple-darwin --enable-sjlj-exceptions \
--with-heavenly=$HEAVENLY --with-as=/usr/local/bin/arm-apple-darwin-as \
--with-ld=/usr/local/bin/arm-apple-darwin-ld

Now, it’s time to patch
If you don’t patch, you receive a lot of garbage errors like these:

../../../llvm-gcc-4.0-iphone/gcc/config/arm/lib1funcs.asm:670:garbage following instruction -- `bls 11f'
../../../llvm-gcc-4.0-iphone/gcc/config/arm/lib1funcs.asm:672:garbage following instruction -- `beq 12f'
make[2]: *** [libgcc/./_udivsi3_s.o] Error 1

Why you obtain these errors ?????? Read this page about issue #145.
How you can correct error ?!?!? Simply download this file and save it on iPhoneDevel directory and:

patch ../../llvm-gcc-4.0-iphone/gcc/config/arm/lib1funcs.asm ../../../lib1funcs.asm.diff

Now, final step

make LLVM_VERSION_INFO=2.0-svn-iphone-dev-0.3-svn
sudo make install

OKOKOKOKOKOKOKKOKOK

Now all it’s OK with toolchain. All files are installed on /usr/local/arm-apple-darwin/ and you can safely compile all sources you want.

Before you go out, some little tips

If you want to run your app on iPhone, you need to run “ldid -S YourApp” on your iPhone, otherwise you obtain “Killed” because your app need to be signed.

If you obtain a “Segmentation fault” error, a “Bus error” or a trap error on your iPhone when you try to launch your app, something went wrong with your main method. Remember, you need to use something like thah when you create your app:

int main(int argc, char *argv[])
{
NSAutoreleasePool* pool = [ [ NSAutoreleasePool alloc ] init ];
int AppReturn;
AppReturn = UIApplicationMain( argc, argv, [YourAppLicationName class] );
return AppReturn;
[ pool release ];
}

Finally, I suggest a Makefile like that when you try to compile

CC = /usr/local/bin/arm-apple-darwin-gcc-4.0.1
CFLAGS =  \
-I"/usr/local/arm-apple-darwin/include/"  \
-I"/usr/local/lib/gcc/arm-apple-darwin/4.0.1/include/" \
-fobjc-abi-version=2 \
 
LD=$(CC)
LDFLAGS = \
-fobjc-abi-version=2 \
-lobjc  -lstdc++.6 -licucore -llockdown -lz.1 -lxml2.2 \
-framework CoreFoundation       \
-framework Foundation   \
-framework UIKit        \
-L"/usr/local/share/iphone-filesystem/usr/lib/" \
-F"/usr/local/share/iphone-filesystem/System/Library/Frameworks/"       \
-bind_at_load
 
App=YourAppName
 
all:    $(App)
 
$(App): main.o YourAppName.o
$(LD) $(LDFLAGS) -o $@ $^
 
%.o:    %.m
$(CC) -c $(CFLAGS) $(CPPFLAGS) $< -o $@
 
clean:
rm -f *.o $(App)

Now, it’s all

Good compiling

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