## NAME

ocamlbuild - The OCaml project compilation tool

## SYNOPSIS

ocamlbuild [ -Is \ dir1,... ] [ -libs \ lib1,... ] [ -lflags \ flag1,... ] [ -pp \ flags ] [ -tags \ tag1,... ] [ -j \ parallel-jobs ] target.native [ -- arg1 arg2 ... ]

(same options)

## DESCRIPTION

ocamlbuild (1)orchestrates the compilation process of your OCaml project. It is similar in function to make (1)except that it is tailor-made to automatically compile most OCaml projects with very little user input.

ocamlbuildshould be invoked in the root of a clean project tree (e.g., with no leftover compilation files). Given one or more targets to compile, it scans the required subdirectories to gather information about the various files present, running tools such as ocamldep (1)to extract dependency information, and gathering optional files that fine-tune its behaviour. Target names are very significant.

## TARGET NAMES

ocamlbuilduses a set of target naming conventions to select the kind of objects to produce. Target names are of the form base.extensionwhere baseis usually the name of the underlying OCaml module and extensiondenotes the kind of object to produce from that file -- a byte code executable, a native executable, documentation... Of course extensions such as .cmo, .cma, .cmi...map to their usual counterparts. Here is a list of the most important ocamlbuild \&-specificextensions:

.native Native code executable

.byte Byte code executable

.inferred.mli Interface inferred with ocamlc -i

.docdir/index.html HTML documentation generated with ocamldoc

## OPTIONS

The following command-line options are recognized by ocamlbuild (1).

-version Display the version

-quiet Make as quiet as possible

-verbose <level> Set the verbose level

-documentation Show rules and flags

-log <file> Set log file

-no-log No log file

-clean Remove build directory and other files, then exit

-I <path> Add to include directories

-Is <path,...> (same as above, but accepts a comma-separated list)

-X <path> Directory to ignore

-Xs <path,...> (idem)

-lib <flag> Link to this ocaml library

-libs <flag,...> (idem)

-lflag <flag> Add to ocamlc link flags

-lflags <flag,...> (idem)

-cflag <flag> Add to ocamlc compile flags

-cflags <flag,...> (idem)

-yaccflag <flag> Add to ocamlyacc flags

-yaccflags <flag,...> (idem)

-lexflag <flag> Add to ocamllex flags

-lexflags <flag,...> (idem)

-ppflag <flag> Add to ocaml preprocessing flags

-pp <flag,...> (idem)

-tag <tag> Add to default tags

-tags <tag,...> (idem)

-ignore <module,...> Don't try to build these modules

-no-links Don't make links of produced final targets

-no-skip Don't skip modules that are requested by ocamldep but cannot be built

-no-hygiene Don't apply sanity-check rules

-no-plugin Don't build myocamlbuild.ml

-no-stdlib Don't ignore stdlib modules

-just-plugin Just build myocamlbuild.ml

-byte-plugin Don't use a native plugin but bytecode

-no-sanitize Do not enforce sanity-check rules

-nothing-should-be-rebuilt Fail if something needs to be rebuilt

-classic-display Display executed commands the old-fashioned way

-j <N> Allow N jobs at once (0 for unlimited)

-build-dir <path> Set build directory

-install-dir <path> Set the install directory

-where Display the install directory

-ocamlc <command> Set the OCaml bytecode compiler

-ocamlopt <command> Set the OCaml native compiler

-ocamldep <command> Set the OCaml dependency tool

-ocamlyacc <command> Set the ocamlyacc tool

-ocamllex <command> Set the ocamllex tool

-ocamlrun <command> Set the ocamlrun tool

-- Stop argument processing, remaining arguments are given to the user program

-help Display the list of options

--help Display the list of options

## SEE ALSO

The ocamlbuildmanual, ocaml (1), make (1).
The OCaml user's manual, chapter Batch compilation.