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The .dyn_hi files currently depend on the .dyn_hi files of modules that
they import. But they actually want the .hi files of modules from
another package.This we make the .dyn_hi files depend on the .hi files
so we are sure that they exist and are up-to-date.

The build system should use 'find' and 'sort' that are discovered by
configure, not the ones in your path.  On Windows the ones in your path
might well be the non-Unixy Windows versions.

This patch fixes the ones I tripped over. There may be more.

In particular, in the integer-gmp package the C and CMM code depends
on the size of STG structures, which vary between ways.

I've also added some missing $s to some makefiles. These aren't
technically necessary, but it's nice to be consistent.

This is now the same as the old default. Currently we cannot embed
rpaths because they would point to the build tree. We should embed
rpaths relative to the $ORIGIN in future.

Unlike with static libs, when linking shared libs the dependencies
have to already exist. Add a dependency $1_$2_$3_LIBS : $1_$2_$3_DEPS_LIBS

when we configure ghc with --enable-shared

This allows the library file type to depend on the way. This is needed
to use .so/.dll libs for the "dyn" way rather than always using .a libs.
For example: thr_debug_dyn_libsuf="_thr_debug-ghc6.11.20090426.so"

Previously we only built library package "cbits" the vanilla way, afterall
C code does not need to be built differently for profiling builds. However
for dynamic libs the C code needs to be built with -fPIC, so we do need
to be able to build package .c (and .s?) files multiple ways.

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# (c) 2009 The University of Glasgow
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# This file is part of the GHC build system.
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# To understand how the build system works and how to modify it, see
#      http://hackage.haskell.org/trac/ghc/wiki/Building/Architecture
#      http://hackage.haskell.org/trac/ghc/wiki/Building/Modifying
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