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| author | Joachim Breitner <mail@joachim-breitner.de> | 2018-10-03 15:36:55 +0200 |
|---|---|---|
| committer | Krzysztof Gogolewski <krz.gogolewski@gmail.com> | 2018-10-03 15:40:22 +0200 |
| commit | fc2ff6dd7496a33bf68165b28f37f40b7d647418 (patch) | |
| tree | 4cb624e2a8046da6c0bdcb3c6acf0aa1dfd4fa5e /libraries/integer-gmp | |
| parent | 3dedffa2a51952b05c22b2d08668155ac07d7320 (diff) | |
| download | haskell-fc2ff6dd7496a33bf68165b28f37f40b7d647418.tar.gz | |
Make GHC (the library) flexible in the choice of integer library
Summary:
We have more and more users of GHC as a library, for example the
Haskell-to-WebAssembly-compiler https://github.com/tweag/asterius.
These need to make different decisions about various aspects of
code generation than the host compiler, and ideally GHC-the-library
allows them to set the `DynFlags` as needed.
This patch adds a new `DynFlag` that configures which `integer`
library to use. This flag is initialized by `cIntegerLibraryType`
(as before), and is only used in `CorePrep` to decide whether to
use `S#` or not.
The other code paths that were varying based on `cIntegerLibraryType`
are no now longer varying: The trick is to use `integer-wired-in`
as the `-this-unit-id` when compiling either `integer-gmp` or
`integer-simple`.
Test Plan: Validate is happy.
Reviewers: hvr, bgamari
Reviewed By: bgamari
Subscribers: TerrorJack, adamse, simonpj, rwbarton, carter
GHC Trac Issues: #13477
Differential Revision: https://phabricator.haskell.org/D5079
Diffstat (limited to 'libraries/integer-gmp')
| -rw-r--r-- | libraries/integer-gmp/integer-gmp.cabal | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libraries/integer-gmp/integer-gmp.cabal b/libraries/integer-gmp/integer-gmp.cabal index 5d2f89039c..52834bb4ea 100644 --- a/libraries/integer-gmp/integer-gmp.cabal +++ b/libraries/integer-gmp/integer-gmp.cabal @@ -60,7 +60,10 @@ library UnliftedFFITypes build-depends: ghc-prim ^>= 0.5.1.0 hs-source-dirs: src/ - ghc-options: -this-unit-id integer-gmp -Wall + -- We need to set the unit ID to integer-wired-in + -- (without a version number) as it's magic. + -- See Note [The integer library] in PrelNames + ghc-options: -this-unit-id integer-wired-in -Wall cc-options: -std=c99 -Wall include-dirs: include |