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OpenFst: Release 1.6.3
OpenFst is a library for constructing, combining, optimizing, and searching
weighted finite-state transducers (FSTs).
REQUIREMENTS:
This version is known to work under Linux using g++ (>= 4.7) and OS X using
XCode (>= 5). It is expected to work wherever adequate POSIX (dlopen,
ssize_t, basename), C99 (snprintf, strtoll, <stdint.h>), and C++11
(<unordered_set>, <unordered_map>, <forward_list>) support is available.
INSTALLATION:
Follow the generic GNU build system instructions in ./INSTALL. We
recommend configuring with --enable-static=no for faster compiles.
Optional features:
--enable-bin Enable fst::script and executables (def: yes)
--enable-compact-fsts Enable CompactFst extensions (def: no)
--enable-compress Enable compression extension (def: no)
--enable-const-fsts Enable ConstFst extensions (def: no)
--enable-far Enable FAR extensions (def: no)
--enable-grm Enable all dependencies of OpenGrm (def: no)
--enable-linear-fsts Enable LinearTagger/ClassifierFst extensions (def: no)
--enable-lookahead-fsts Enable LookAheadFst extensions (def: no)
--enable-mpdt Enable MPDT extensions (def: no)
--enable-ngram-fsts Enable NGramFst extensions (def: no)
--enable-pdt Enable PDT extensions (def: no)
--enable-python Enable Python extension (def: no)
--enable-special Enable special-matcher extensions (def: no)
Configuring with --enable-bin=no gives very fast compiles, but excludes the
command line utilities.
Configuring with --enable-python will attempt to install the Python module to
whichever site-packages (or dist-packages, on Debian or Ubuntu) is found
during configuration.
The flag --with-libfstdir specifies where FST extensions should be installed;
it defaults to ${libdir}/fst.
Compiling with -Wall -Wno-sign-compare under g++ should give no warnings from
this library.
If you encounter an error about loading shared objects when attempting to use
the library immediately after installation, (e.g, `...cannot open shared
object file...`) you may need to refresh your system's shared object cache.
On Linux, this is accomplished by invoking ldconfig; the corresponding command
on OS X is called update_dyld_shared_cache. Both of these require superuser
privileges (and so should be executed with sudo).
USAGE:
Assuming you've installed under the default /usr/local, the FST binaries are
found on /usr/local/bin.
To use in your own program, include <fst/fstlib.h> and compile with
-I/usr/local/include. The compiler must support C++11 (for g++ add the flag
-std=c++11). Link against /usr/local/lib/libfst.so and -ldl. Set your
LD_LIBRARY_PATH (or equivalent) to contain /usr/local/lib. The linking is,
by default, dynamic so that the Fst and Arc type DSO extensions can be used
correctly if desired. Any extensions will be found under /usr/local/lib/fst
or /usr/local/include/fst/extensions.
DOCUMENTATION:
See www.openfst.org for general documentation.
See ./NEWS for updates since the last release.
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