The JavaScriptCore library is part of the WebKit project and thus Open Source. However, in the sources you get from the WebKit SVN, the XCode project files are curiously missing an iOS compile target. The sources you get from opensource.apple.com are missing the project files altogether. You can't compile it at all.

This repo aims to re-produce the missing iOS targets while staying on a somewhat up-to-date version.

1. Run python make.py under Source.
2. Get coffee! Building this takes a while ;P

You can do python make.py --help for more options.

1. Install CMake

2. Set ANDROID_NDK variable to you android ndk path
   export ANDROID_NDK=path/to/ndk

3. mkdir build_android && cd build_android

4. Run CMake Command (make sure you have Gperf, bison, python, ruby and perl installed)

   cmake -DCMAKE_TOOLCHAIN_FILE="../android_toolchain/android.toolchain.cmake" \
         --platform=android-14 -DANDROID_ABI=armeabi -DCMAKE_BUILD_TYPE=MinSizeRel \
         -DANDROID=TRUE -DANDROID_STL=gnustl_static \
         -DANDROID_TOOLCHAIN_NAME=arm-linux-androideabi-4.9 \
         -DANDROID_NATIVE_API_LEVEL=14 -DENABLE_WEBKIT=0 -DENABLE_WEBCORE=0 \
         -DENABLE_TOOLS=0 -DENABLE_WEBKIT=0 -DENABLE_WEBKIT2=0 \
         -DENABLE_API_TESTS=0 -DPORT=Android \
         -DCMAKE_FIND_ROOT_PATH="$(pwd)/../icu_build_android" \
         -DPYTHON_EXECUTABLE=$(which python) -DPERL_EXECUTABLE=$(which perl) \
         -DRUBY_EXECUTABLE=$(which ruby) -DBISON_EXECUTABLE=$(which bison) \
         -DGPERF_EXECUTABLE=$(which Gperf) \
         -DENABLE_LLINT=1 -DSHARED_CORE=0 -DENABLE_PROMISES=1 \
         -DENABLE_INSPECTOR=0 -DENABLE_JIT=0 -DEXPORT_ONLY_PUBLIC_SYMBOLS=1 \
         -DCMAKE_CXX_FLAGS="-D__STDC_LIMIT_MACROS" \
         -DCMAKE_INSTALL_PREFIX=../AndroidModulesRelease/JavaScriptCore \
         ..
   

   one liner:

   cmake -DCMAKE_TOOLCHAIN_FILE="../android_toolchain/android.toolchain.cmake" --platform=android-14 -DANDROID_ABI=armeabi -DCMAKE_BUILD_TYPE=MinSizeRel -DANDROID=TRUE -DANDROID_STL=gnustl_static -DANDROID_TOOLCHAIN_NAME=arm-linux-androideabi-4.9 -DANDROID_NATIVE_API_LEVEL=14 -DENABLE_WEBKIT=0 -DENABLE_WEBCORE=0 -DENABLE_TOOLS=0 -DENABLE_WEBKIT=0 -DENABLE_WEBKIT2=0 -DENABLE_API_TESTS=0 -DPORT=Android -DCMAKE_FIND_ROOT_PATH="$(pwd)/../icu_build_android" -DPYTHON_EXECUTABLE=$(which python) -DPERL_EXECUTABLE=$(which perl) -DRUBY_EXECUTABLE=$(which ruby) -DBISON_EXECUTABLE=$(which bison) -DGPERF_EXECUTABLE=$(which Gperf) -DENABLE_LLINT=1 -DSHARED_CORE=0 -DENABLE_PROMISES=1 -DENABLE_INSPECTOR=0 -DENABLE_JIT=0 -DEXPORT_ONLY_PUBLIC_SYMBOLS=1 -DCMAKE_CXX_FLAGS="-D__STDC_LIMIT_MACROS" -DCMAKE_INSTALL_PREFIX=../AndroidModulesRelease/JavaScriptCore ..
   

5. make -j16