A collection of Fortran 2018 interface bindings to the OpenLDAP Lightning Memory-Mapped Database (LMDB), a B-tree-based database management library modeled loosely on the BerkeleyDB API.

The LMDB package has to be installed with development headers. On FreeBSD, run:

# pkg install databases/lmdb

On Linux, instead:

# apt-get install liblmdb-dev

If GNU Fortran is used to build the interface library, select the build target depending on your operating system. On FreeBSD:

$ make freebsd

On Linux, instead:

$ make linux

On Windows:

$ make windows

Or, overwrite the argument PPFLAGS. Install the library and the module files system-wide, for example:

$ make install PREFIX=/opt

Link your programs against /opt/lib/libfortran-lmdb.a -llmdb. Alternatively, overwrite the default compiler and the compiler/preprocessor flags:

$ make FC=ifx FFLAGS="-O3" PPFLAGS="-D__linux__"

Build and run the test program:

$ make test
$ ./test_lmdb

Pass the operating system as an additional flag to the Fortran Package Manager. On FreeBSD:

$ fpm build --profile release --flag "-D__FreeBSD__"

On Linux:

$ fpm build --profile release --flag "-D__linux__"

On Windows:

$ fpm build --profile release --flag "-D_MSC_VER -D_WIN32"

You can add fortran-lmdb as an FPM dependency:

[dependencies]
fortran-lmdb = { git = "https://github.com/interkosmos/fortran-lmdb.git" }

ISC