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| author | Michael Sloan <mgsloan@gmail.com> | 2018-07-26 17:21:08 -0400 |
|---|---|---|
| committer | Ben Gamari <ben@smart-cactus.org> | 2018-07-27 12:29:40 -0400 |
| commit | 60ecf43a5a0b1cc732560058a06ca5b2f2e27773 (patch) | |
| tree | 49a9e854a15d762373a65a24f1bbf5b8d1ea2ffd /ghc/ghc-bin.cabal.in | |
| parent | e5f3de2cf2f52e7079cbee624ae91beecf663f87 (diff) | |
| download | haskell-60ecf43a5a0b1cc732560058a06ca5b2f2e27773.tar.gz | |
Modifications to support loading GHC into GHCi
This change was previously part of
[D4904](https://phabricator.haskell.org/D4904), but is being split off
to aid in getting this reviewed and merged.
* The compiler code is built with `NoImplicitPrelude`, but GHCi's
modules are incompatible with it. So, this adds the pragma to all GHCi
modules that didn't have it, and adds imports of Prelude.
* In order to run GHC within itself, a `call of 'initGCStatistics`
needed to be skipped. This uses CPP to skip it when
`-DGHC_LOADED_INTO_GHCI` is set.
* There is an environment variable workaround suggested by Ben Gamari
[1], where `_GHC_TOP_DIR` can be used to specify GHC's top dir if `-B`
isn't provided. This can be used to solve a problem where the GHC being
run within GHCi attempts to look in `inplace/lib/lib/` instead of
`inplace/lib/`.
[1]: https://phabricator.haskell.org/D4904#135438
Reviewers: goldfire, bgamari, erikd, alpmestan
Reviewed By: alpmestan
Subscribers: alpmestan, lelf, rwbarton, thomie, carter
Differential Revision: https://phabricator.haskell.org/D4986
Diffstat (limited to 'ghc/ghc-bin.cabal.in')
| -rw-r--r-- | ghc/ghc-bin.cabal.in | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/ghc/ghc-bin.cabal.in b/ghc/ghc-bin.cabal.in index 85a92501d2..5c51058d81 100644 --- a/ghc/ghc-bin.cabal.in +++ b/ghc/ghc-bin.cabal.in @@ -84,3 +84,8 @@ Executable ghc CPP NondecreasingIndentation TupleSections + + -- This should match the default-extensions used in 'ghc.cabal'. This way, + -- GHCi can be used to load it all at once. + Default-Extensions: + NoImplicitPrelude |