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| author | Ruey-Lin Hsu <petercommand@gmail.com> | 2016-08-04 13:41:57 +0200 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2016-08-05 10:40:45 +0200 |
| commit | f09d65474ed042360999cb88221d65b07bfb4b5f (patch) | |
| tree | cbecdd42cf26e33b4c9760cad75820f6f381b7fb /docs | |
| parent | fe4008f6cc51612c2511cf23fcd646bc23ef91b8 (diff) | |
| download | haskell-f09d65474ed042360999cb88221d65b07bfb4b5f.tar.gz | |
check that the number of parallel build is greater than 0
Fixes #12062.
Reviewers: bgamari, thomie, austin, simonmar
Reviewed By: bgamari, thomie, simonmar
Subscribers: simonmar, thomie
Differential Revision: https://phabricator.haskell.org/D2415
GHC Trac Issues: #12062
Diffstat (limited to 'docs')
| -rw-r--r-- | docs/users_guide/using.rst | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/docs/users_guide/using.rst b/docs/users_guide/using.rst index 3d3ef34d02..1d7f52c8e6 100644 --- a/docs/users_guide/using.rst +++ b/docs/users_guide/using.rst @@ -418,7 +418,8 @@ The main advantages to using ``ghc --make`` over traditional dependencies never get out of sync with the source. - Using the :ghc-flag:`-j` flag, you can compile modules in parallel. Specify - ``-j⟨N⟩`` to compile ⟨N⟩ jobs in parallel. + ``-j⟨N⟩`` to compile ⟨N⟩ jobs in parallel. If N is omitted, + then it defaults to the number of processors. Any of the command-line options described in the rest of this chapter can be used with ``--make``, but note that any options you give on the @@ -444,11 +445,12 @@ The source files for the program don't all need to be in the same directory; the :ghc-flag:`-i` option can be used to add directories to the search path (see :ref:`search-path`). -.. ghc-flag:: -j <N> +.. ghc-flag:: -j [N] Perform compilation in parallel when possible. GHC will use up to ⟨N⟩ - threads during compilation. Note that compilation of a module may not - begin until its dependencies have been built. + threads during compilation. If N is omitted, then it defaults to the + number of processors. Note that compilation of a module may not begin + until its dependencies have been built. .. _eval-mode: |