build system does not pass selected gcc when configuring unix package

The build system's top level ./configure has a flag --with-gcc=. All the library packages except the unix package use the same gcc. The unix package either does not get passed the selected location of gcc, or it ignores it. The ./configure for the unix package picks up the gcc from the $PATH.

This can be reproduced by putting a dummy gcc in your $PATH that is just a symlink to /bin/false and using a top level ./configure --with-gcc=

When it gets to building the unix package it picks up the gcc from the $PATH:

Configuring unix-2.4.0.0...
configure: WARNING: unrecognized options: --with-compiler, --with-cc
checking for gcc... gcc
checking whether the C compiler works... no

This bug is platform independent but it's most relevant on Solaris where the default gcc is not usable by ghc.

Trac metadata

Trac field	Value
Version	6.12.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	Unresolved
Component	Build System
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