driver: unconditionally disable relaxation when linking partially

In https://github.com/gentoo-haskell/gentoo-haskell/issues/704
user explicitly uses -Wl,--relax for most built binaries.

Most of the time this works fine except for capi haskell code
similar to the following:

```haskell
{-# LANGUAGE CApiFFI #-}
module Z where

import Foreign.C

foreign import capi "unistd.h close" c_close :: CInt -> IO CInt
```

In this case compilation fails as:

```
$ inplace/bin/ghc-stage2 -c Z.hs -optl-Wl,--relax -fforce-recomp
ld: --relax and -r may not be used together
```

GHC's driver already disables relaxation on sparc as there relaxation
is already a default mode.

This change disables relaxation on partial linking for all platforms
where linker is binutils linker.

Reported-by: wmyrda
Bug: https://github.com/gentoo-haskell/gentoo-haskell/issues/704
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>

Test Plan: pass -optl-Wl,--relax in test above

Reviewers: bgamari

Reviewed By: bgamari

Subscribers: rwbarton, thomie, carter

Differential Revision: https://phabricator.haskell.org/D4888

0 files changed, 0 insertions, 0 deletions