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man(1) Faust man page man(1)


Faust - DSP to C/C++, Rust, LLVM IR, JAVA, WebAssembly (wast/wasm), Interpreter compiler


faust [options] file1 [file2 ...]


Faust (Functional Audio Stream) is a functional programming language specifically designed for real-time signal processing and synthesis. Faust targets high-performance signal processing applications and audio plug-ins for a variety of platforms and standards.


Input options:

-a <file> wrapper architecture file.

-i –inline-architecture-files inline architecture files.

-A <dir> –architecture-dir <dir> add the directory <dir> to the architecture search path.

-I <dir> –import-dir <dir> add the directory <dir> to the import search path.

-L <file> –library <file> link with the LLVM module <file>.

-t <sec> –timeout <sec> abort compilation after <sec> seconds (default 120).

Output options:

-o <file> the output file.

-e –export-dsp export expanded DSP (with all included libraries).

-uim –user-interface-macros add user interface macro definitions to the output code.

-xml generate an XML description file.

-json generate a JSON description file.

-O <dir> –output-dir <dir> specify the relative directory of the generated output code and of additional generated files (SVG, XML...).

Code generation options:

-lang <lang> –language select output language, `lang' should be in c, ocpp, cpp (default), rust, java, llvm, cllvm, fir, wast/wasm, soul, interp.

-single –single-precision-floats use single precision floats for internal computations (default).

-double –double-precision-floats use double precision floats for internal computations.

-quad –quad-precision-floats use quad precision floats for internal computations.

-es 1|0 –enable-semantics 1|0 use enable semantics when 1 (default), and simple multiplication otherwise.

-lcc –local-causality-check check causality also at local level.

-light –light-mode do not generate the entire DSP API.

-clang –clang when compiled with clang/clang++, adds specific #pragma for auto-vectorization.

-flist –file-list use file list used to eval process.

-exp10 –generate-exp10 function call instead of pow(10) function.

-os –one-sample generate one sample computation.

-cn <name> –class-name <name> specify the name of the dsp class to be used instead of mydsp.

-scn <name> –super-class-name <name> specify the name of the super class to be used instead of dsp.

-pn <name> –process-name <name> specify the name of the dsp entry-point instead of process.

-lb –left-balanced generate left balanced expressions.

-mb –mid-balanced generate mid balanced expressions (default).

-rb –right-balanced generate right balanced expressions.

-lt –less-temporaries generate less temporaries in compiling delays.

-mcd <n> –max-copy-delay <n> threshold between copy and ring buffer implementation (default 16 samples).

-mem –memory allocate static in global state using a custom memory manager.

-ftz <n> –flush-to-zero <n> code added to recursive signals [0:no (default), 1:fabs based, 2:mask based (fastest)].

-inj <f> –inject <f> inject source file <f> into architecture file instead of compile a dsp file.

-scal –scalar generate non-vectorized code.

-inpl –in-place generates code working when input and output buffers are the same (scalar mode only).

-vec –vectorize generate easier to vectorize code.

-vs <n> –vec-size <n> size of the vector (default 32 samples).

-lv <n> –loop-variant <n> [0:fastest (default), 1:simple].

-omp –openmp generate OpenMP pragmas, activates –vectorize option.

-pl –par-loop generate parallel loops in –openmp mode.

-sch –scheduler generate tasks and use a Work Stealing scheduler, activates –vectorize option.

-ocl –opencl generate tasks with OpenCL (experimental).

-cuda –cuda generate tasks with CUDA (experimental).

-dfs –deep-first-scheduling schedule vector loops in deep first order.

-g –group-tasks group single-threaded sequential tasks together when -omp or -sch is used.

-fun –fun-tasks separate tasks code as separated functions (in -vec, -sch, or -omp mode).

-fm <file> –fast-math <file> use optimized versions of mathematical functions implemented in <file>, use `faust/dsp/fastmath.cpp' when file is `def'.

-ns <name> –namespace <name> generate C++ code in a namespace <name>

Block diagram options:

-ps –postscript print block-diagram to a postscript file.

-svg –svg print block-diagram to a svg file.

-sd –simplify-diagrams try to further simplify diagrams before drawing.

-drf –draw-route-frame draw route frames instead of simple cables.

-f <n> –fold <n> threshold to activate folding mode during block-diagram generation (default 25 elements).

-fc <n> –fold-complexity <n> complexity threshold to fold an expression in folding mode (default 2) -mns <n> –max-name-size <n> threshold during block-diagram generation (default 40 char).

-sn –simple-names use simple names (without arguments) during block-diagram generation.

-blur –shadow-blur add a shadow blur to SVG boxes.

Math doc options:

-mdoc –mathdoc print math documentation of the Faust program in LaTeX format in a -mdoc folder.

-mdlang <l> –mathdoc-lang <l> if translation file exists (<l> = en, fr, ...).

-stripmdoc –strip-mdoc-tags strip mdoc tags when printing Faust -mdoc listings.

Debug options:

-d –details print compilation details.

-time –compilation-time display compilation phases timing information.

-tg –task-graph print the internal task graph in dot format.

-sg –signal-graph print the internal signal graph in dot format.

-norm –normalized-form print signals in normalized form and exit.

-ct –check-table check table index range.

Information options:

-h –help print this help message.

-v –version print version information and embedded backends list.

-libdir –libdir print directory containing the Faust libraries.

-includedir –includedir print directory containing the Faust headers.

-archdir –archdir print directory containing the Faust architectures.

-dspdir –dspdir print directory containing the Faust dsp libraries.

-pathslist –pathslist print the architectures and dsp library paths.


faust -a jack-gtk.cpp -o myfx.cpp myfx.dsp


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Copyright (C) 2002-2019, GRAME - Centre National de Creation Musicale. All rights reserved.
Version 2.20.2 (05-December-2019)