GHC 6.10.4 compilation failure: libffi failed to compile

The libffi failed to compile with the error: "configure: error: source directory already configured; run "make distclean" there first"

To solve this one must specify the full path when invoking the configure script. To do this the part of the "ghc-xxx/libffi/Makefile" should be changed to:

from

            CC=$(WhatGccIsCalled) $(SHELL) configure \

            CC=$(WhatGccIsCalled) $(SHELL) `pwd`/configure \

Edited Mar 09, 2019 by Ian Lynagh -

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