FFI for kdb+
ffiq is an extension to kdb+ for loading and calling dynamic libraries using pure q.
It is part of the Fusion for kdb+ interface collection.
The main purpose of the library is to build stable interfaces on top of external libraries, or to interact with the operating system from q. No compiler toolchain or writing C/C++ code is required to use this library.
We are grateful to @abalkin for allowing us to adapt and expand on his original codebase.
Please report issues in this repository.
Requirements
- Operating system: Linux, macOS 10.12+, Windows 7+
- kdb+ v3.5 or higher
- libffi 3.1+ as per instructions. RHEL/CentOS 6/7 provided libffi 3.0.5 can be used as well.
| environment | installation |
|---|---|
| Ubuntu Linux with 64-bit kdb+ | sudo apt-get install libffi-dev |
| Ubuntu Linux with 32-bit kdb+ | sudo apt-get install libffi-dev:i386 |
| RHEL/CentOS with 64-bit kdb+ | sudo yum install libffi-devel |
| RHEL/CentOS with 32-bit kdb+ | sudo yum install glibc-devel.i686 libgcc.i686 libffi-devel.i686 |
| macOS | (no action required) |
| Windows | (no action required) |
Installation
Download
Download the appropriate release archive from releases page.
Unpack and install content of the archive
| environment | action |
|---|---|
| Linux | tar xzvf ffi_linux-v*.tar.gz -C $QHOME --strip 1 |
| macOS | tar xzvf ffi_osx-v*.tar.gz -C $QHOME --strip 1 |
| Windows | Open the archive and copy content of the ffi folder (ffi\*) to %QHOME% or c:\q |
API
See code.kx.com/v2/interfaces/ffi for documentation.
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