SQLite3-OCaml - SQLite3 Bindings for OCaml
What is SQLite3-OCaml?
SQLite3-OCaml is an OCaml library with bindings to the SQLite3 client API. Sqlite3 is a self-contained, serverless, zero-configuration, transactional SQL database engine with outstanding performance for many use cases.
These bindings are written in a way that enables a friendly coexistence with
the old (version 2) SQLite and its OCaml wrapper
The API in file
src/sqlite3.mli is fully documented, and HTML-documentation
can be built using
make doc and installed with this distribution. It can
also be found online.
SQLite3 has its own online documentation.
test-directory in this distribution contains a few simple examples
for testing various features of this library.
SQLite3-OCaml depends on
pkg-config to locate and compile against an
If the SQLite3 version is greater than or equal to 3.3.7, it is assumed that it supports Run-Time Loadable Extensions. If this feature has been explicitly disabled in the library, building applications will fail with:
Undefined symbols for architecture ...: "_sqlite3_enable_load_extension", referenced from: _caml_sqlite3_enable_load_extension in libsqlite3_stubs.a(sqlite3_stubs.o) (maybe you meant: _caml_sqlite3_enable_load_extension)
You can check if your library is missing loadable extensions by searching it for the string
If you need to change where
pkg-configwill look for the SQLite3 library, set the
PKG_CONFIG_PATHenvironment variable to the new directory. This can be automated by setting the
SQLITE3_OCAML_BREWCHECKenvironment variable; this will instruct the build to see if a brewed version of SQLite is installed and route
You can explicitly disable run-time loadable extensions by calling
configurewith the flag
--disable-loadable-extensionsor by setting the environment variable
SQLITE3_DISABLE_LOADABLE_EXTENSIONSif linking problems persist.
Due to frequent installation issues with loadable extensions on Mac OS X, the default there is to disable them. You will have to explicitly enable them on that platform.
Enrico Tassi contributed support for user-defined scalar functions.
Markus Mottl rewrote Christian's bindings for Jane Street Holding, LLC to clean up a few things and to make it perform better in multi-threaded environments.
Christian Szegedy wrote the initial release for SQLite version 3.
Mikhail Fedotov wrote ocaml-sqlite for SQLite version 2. His bindings served as a reference for this wrapper, but sqlite3 is written completely from scratch since the C interface changed significantly.
Contact Information and Contributing
In the case of bugs, feature requests, contributions and similar, please communicate with the maintainers using the GitHub project page.
Markus Mottl on June 14, 2016