In order to support the calling of native library calls from Java code, FWD depends on Portable Foreign Function Interface Library (also known as
libffi). The FWD JNI library is dependent upon
The following instructions are valid for a system being used for running the FWD Client as well as for building FWD. To support both use cases, you MUST install the development version of
libffi. If you do not need to build FWD, you can follow the
libffi install instructions for only executing the FWD client.
In all cases, the bitness of this library must match the OS architecture and also the bitness of the JVM used by the FWD clients.
| On Linux,
libffi can be installed using
sudo apt-get install libffi-dev.
|The third party
libffi-6.dll is required for use of FWD on Windows. The DLL must be installed into the system directory (usually
As a convenience, the 32-bit and 64-bit pre-built
libffi6.dll archives are available.
The library files
libffi*.*a are required to build FWD native modules for Windows. Current project implementation requires the libffi-6 related libs to be installed in (GCC) compiler libraries directory. When using the prebuilt binaries, the directory for lib files is:
i686-pc-mingw32\.libs for 32-bit package and
x86_64-w64-mingw32\.libs for 64-bit package. The all files except
*.dll must be copied into
mingw32\i686-w64-mingw32\lib directory for 32-bit
MinGW, or into
mingw64\x86_64-w64-mingw32\lib for 64-bit
MinGW. The include files from
x86_64-w64-mingw32\include must be copied into
mingw64\x86_64-w64-mingw32\include for 32-bit and 64-bit respectively.
For details on building
libffi from source code, please see Building and Installing libffi on Windows.