# wget http://dl.google.com/android/adt/adt-bundle-linux-x86-20130219.zip
# apt-get install unzip

export ANDROID_GNUSTEP_INSTALL_ROOT=`pwd`

# we need build-essential for Make
sudo apt-get install build-essential

# add-apt-repository is in python-software-properties
sudo apt-get install python-software-properties

# android needs sun java
if false ; then
	sudo add-apt-repository "deb http://archive.canonical.com/ precise partner"
	sudo apt-get update
	sudo apt-get install sun-java6-jdk
else
	sudo add-apt-repository ppa:webupd8team/java
	sudo apt-get update
	sudo apt-get install oracle-java6-installer
fi

# gnustep needs svn
sudo apt-get install subversion

# libobjc2 needs cmake
sudo apt-get install cmake

# fetch android tools
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
echo " ==> FETCHING ANDROID TOOLS"
wget http://dl.google.com/android/android-sdk_r21.1-linux.tgz
echo " ==> UNPACKING ANDROID TOOLS"
tar xfz android-sdk_r21.1-linux.tgz

# fetch android sdk
echo " ==> FETCHING ANDROID SDK"
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
cd android-sdk-linux/tools
if false ; then
	# fetch everything
	./android update sdk -u
else
	# try to fetch just newest platform sdk
	export NEWEST_API=$(./android list sdk -a | grep "SDK Platform Android" | head -n 1 | sed 's/.*API \(.\+\),.*/\1/')
	./android update sdk -u --filter platform-tools,android-${NEWEST_API}
fi

# fetch android ndk
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
echo " ==> FETCHING ANDROID NDK"
wget http://dl.google.com/android/ndk/android-ndk-r8d-linux-x86.tar.bz2
tar xfj android-ndk-r8d-linux-x86.tar.bz2
export ANDROID_NDK="${ANDROID_GNUSTEP_INSTALL_ROOT}/android-ndk-r8d"
export ANDROID_NDK_LLVM="${ANDROID_GNUSTEP_INSTALL_ROOT}/android-ndk-r8d/toolchains/llvm-3.1/prebuilt/linux-x86/bin/"

# bootstrap a standalone toolchain
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
rm -rf /tmp/my-android-toolchain
${ANDROID_NDK}/build/tools/make-standalone-toolchain.sh --platform=android-5 --install-dir=/tmp/my-android-toolchain --toolchain=arm-linux-androideabi-clang3.1
export PATH=/tmp/my-android-toolchain/bin:$PATH

# fetch gnustep and libobjc2
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
if false ; then
	# fetch all
	echo " ==> FETCHING GNUSTEP"
	svn co http://svn.gna.org/svn/gnustep/modules gnustep
else
	# fetch just gnustep-make, gnustep-base and libobjc2
	mkdir -p gnustep/core
	mkdir -p gnustep/dev-libs
	cd gnustep/core
	echo " ==> FETCHING GNUSTEP MAKE & BASE"
	svn co http://svn.gna.org/svn/gnustep/tools/make/trunk/ make
	svn co http://svn.gna.org/svn/gnustep/libs/base/trunk/ base
	cd ../..
	cd gnustep/dev-libs
	echo " ==> FETCHING LIBOBJC2"
	svn co http://svn.gna.org/svn/gnustep/libs/libobjc2/trunk libobjc2
	cd ../../
fi

# fetch android-cmake toolchain file
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
if false ; then
	# not used; no clang support
	wget http://android-cmake.googlecode.com/hg/toolchain/android.toolchain.cmake
else
	# source: http://root.cern.ch/svn/root/trunk/interpreter/llvm/src/cmake/platforms/Android.cmake
	# modified to replace CMAKE_C_COMPILER's reference to CMAKE_BINARY_DIR with LLVM_ANDROID_TOOLCHAIN_DIR
	# also, changed sysroot
	cat > android.toolchain.cmake << _EOF
	# Toolchain config for Android NDK.
	# This is expected to be used with a standalone Android toolchain (see
	# docs/STANDALONE-TOOLCHAIN.html in the NDK on how to get one).
	#
	# Usage:
	# mkdir build; cd build
	# cmake ..; make
	# mkdir android; cd android
	# cmake -DLLVM_ANDROID_TOOLCHAIN_DIR=/path/to/android/ndk \
	#   -DCMAKE_TOOLCHAIN_FILE=../../cmake/platforms/Android.cmake ../..
	# make <target>

	SET(CMAKE_SYSTEM_NAME Linux)
	SET(CMAKE_C_COMPILER \${LLVM_ANDROID_TOOLCHAIN_DIR}/bin/clang)
	SET(CMAKE_CXX_COMPILER \${LLVM_ANDROID_TOOLCHAIN_DIR}/bin/clang++)
	SET(ANDROID "1" CACHE STRING "ANDROID" FORCE)

	SET(ANDROID_COMMON_FLAGS "-target arm-linux-androideabi -B\${LLVM_ANDROID_TOOLCHAIN_DIR}") # -mllvm -arm-enable-ehabi")
	SET(CMAKE_C_FLAGS "\${ANDROID_COMMON_FLAGS}" CACHE STRING "toolchain_cflags" FORCE)
	SET(CMAKE_CXX_FLAGS "\${ANDROID_COMMON_FLAGS}" CACHE STRING "toolchain_cxxflags" FORCE)
	SET(CMAKE_LINK_FLAGS "\${ANDROID_COMMON_FLAGS}" CACHE STRING "toolchain_linkflags" FORCE)
_EOF
fi

# patch libobjc2
# when the script was written, _Unwind_Action was missing on arm,
# and portable init_recursive_mutex() had to be forced for android
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
cd gnustep/dev-libs/libobjc2

svn revert -R .
rm android.patch
cat > android.patch << _EOF
Index: lock.h
===================================================================
--- lock.h\t(revision 36313)
+++ lock.h\t(working copy)
@@ -22,9 +22,9 @@
 typedef pthread_mutex_t mutex_t;
 // If this pthread implementation has a static initializer for recursive
 // mutexes, use that, otherwise fall back to the portable version
-#\tifdef PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
+#\tif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP) && !defined(ANDROID)
 #\t\tdefine INIT_LOCK(x) x = PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP
-#\telif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER)
+#\telif defined(PTHREAD_RECURSIVE_MUTEX_INITIALIZER) && !defined(ANDROID)
 #\t\tdefine INIT_LOCK(x) x = PTHREAD_RECURSIVE_MUTEX_INITIALIZER
 #\telse
 #\t\tdefine INIT_LOCK(x) init_recursive_mutex(&(x))
Index: unwind-arm.h
===================================================================
--- unwind-arm.h\t(revision 36313)
+++ unwind-arm.h\t(working copy)
@@ -1,3 +1,5 @@
+#include <stdint.h>
+
 /**
  * ARM-specific unwind definitions.  These are taken from the ARM EHABI
  * specification.
@@ -14,6 +16,8 @@
 \t_URC_FATAL_PHASE1_ERROR = _URC_FAILURE
 } _Unwind_Reason_Code;
 
+typedef int _Unwind_Action;
+
 typedef uint32_t _Unwind_State;
 #ifdef __clang__
 static const _Unwind_State _US_VIRTUAL_UNWIND_FRAME  = 0;
_EOF
cat android.patch | sed 's/\\t/\t/g' > android2.patch
mv android2.patch android.patch
patch -p0 -i android.patch



# build libobjc2
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
cd gnustep/dev-libs/libobjc2

rm -rf build
mkdir -p build && cd build
#cmake -DCMAKE_TOOLCHAIN_FILE="${ANDROID_GNUSTEP_INSTALL_ROOT}/android.toolchain.cmake" -DCOMPILER_FAMILY=clang -DCOMPILER_FAMILY_PP=clang++ ..
cmake -DCMAKE_TOOLCHAIN_FILE="${ANDROID_GNUSTEP_INSTALL_ROOT}/android.toolchain.cmake" -DLLVM_ANDROID_TOOLCHAIN_DIR="/tmp/my-android-toolchain/" -DTESTS=FALSE ..
make -j8 objc objcxx
make install

# update gnustep-make's config.sub to recognize androideabi
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
cd gnustep/core/make

rm config.sub
wget "http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD" -O config.sub

# build gnustep-make
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
cd gnustep/core/make

./configure --host=arm-linux-androideabi
make
make install

# build gnustep-base
cd "${ANDROID_GNUSTEP_INSTALL_ROOT}"
cd gnustep/core/base

/configure --host=arm-linux-androideabi --enable-nxconstantstring --disable-invocations --disable-iconv --disable-tls --disable-icu
make
make install