The tools in this section are based on iOS4, the SDK being the iPhoneOS4.2 SDK. We use OSX, potentially running under a Virtual Machine.

• OSX Snow Leopard (server-edition for use with Parallels and VMware) with the minimal configuration.
• XCode 3.2.5 (xcode_3.2.5_and_ios_sdk_4.2_final.dmg) from which we extract just the iPhoneOS4.2 SDK folder.
• XCode 3.2.6 (xcode_3.2.6_and_ios_sdk_4.3.dmg) for the rest of the required tools.

The cross-compile script used to create bundles for iOS is the following:

#!/bin/sh
export DEVROOT=/Developer/Platforms/iPhoneOS.platform/Developer
export SDKROOT=$DEVROOT/SDKs/iPhoneOS4.2.sdk
export CC=$DEVROOT/usr/bin/gcc
export LD=$DEVROOT/usr/bin/ld
export CPP=$DEVROOT/usr/bin/cpp
export CXX=$DEVROOT/usr/bin/g++
export AR=$DEVROOT/usr/bin/ar
export AS=$DEVROOT/usr/bin/as
export NM=$DEVROOT/usr/bin/nm
export CXXCPP=$DEVROOT/usr/bin/cpp
export RANLIB=$DEVROOT/usr/bin/ranlib
export LDFLAGS="-arch armv6 -pipe -no-cpp-precomp -isysroot $SDKROOT -L$SDKROOT/usr/lib -L/Users/cross/Development/iOS/usr/lib"
export CFLAGS="-arch armv6 -pipe -no-cpp-precomp -D__IPHONE_OS_VERSION_MIN_REQUIRED=30000 -isysroot $SDKROOT -I$SDKROOT/usr/include -I/Users/cross/Development/iOS/include"
export CXXFLAGS="-arch armv6 -pipe -no-cpp-precomp -D__IPHONE_OS_VERSION_MIN_REQUIRED=30000 -isysroot $SDKROOT -I$SDKROOT/usr/include -I/Users/cross/Development/iOS/include/"
export PKG_CONFIG_PATH=/Users/cross/Development/iOS/usr/lib/:$PKG_CONFIG_PATH
export PATH=$DEVROOT/usr/bin:/Users/cross/Development/iOS/usr/bin:$PATH

where cross is the OSX user and the path to the development directory is /Users/cross/Development/iOS.

Using automake and autoconf build systems, we always cross-compile to the ARM platform by using the –host=arm-apple-darwin9. As an example, for compiling APC (as we did on apc) we use the following additions to the compile script above:

./configure --prefix=/usr \
            --sysconfdir=/etc \
            --localstatedir=/var \
            --host=arm-apple-darwin9 \
            --with-php-config=/Users/frank/Development/iOS/usr/bin/php-config \
            --with-libdir=/Users/frank/Development/iOS/usr/lib \
            --disable-apc-pthreadmutex \
            --disable-apc-pthreadrwlocks \
            --enable-apc-spinlocks