build system does not respect --with-gcc=

The ./configure scripts for all the core libs do not respect the --with-gcc= flag. The current build system passes this flag but it gets ignored.

This means that overall the ghc build does not respect the --with-gcc= flag. This is kind of annoying for doing a build on Solaris, since we have to use a gcc other than the standard system one.

When using a 'fake' gcc on the $PATH (a shell script that always fails), we get:

ghc/libraries/unix $ ./configure --with-gcc=/opt/gcc-vanilla/4.1.2/bin/gcc
configure: WARNING: unrecognized options: --with-gcc
checking for gcc... gcc
checking for C compiler default output file name... 
configure: error: in `/home/duncan/prgs/ghc/libraries/unix':
configure: error: C compiler cannot create executables
See `config.log' for more details.

The same problem occurs with: base, directory, process, old-time and editline. These are all of the core packages that use ./configure scripts.

On the other hand they all seem to check the CC environment variable.

Perhaps the ghc build system should pass --with-gcc= to the Cabal Setup, and perhaps that should call configure with CC set.

The problem applies to ghc-6.8.3 and ghc-HEAD (so probably also 6.10.x).

Trac metadata

Trac field	Value
Version	6.11
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Build System
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