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Hadrian: fix library install paths in bindist Makefile (#16498)

Merged Hadrian: fix library install paths in bindist Makefile (#16498)
hsyl20/ghc:hsyl20-bindist-makefile-16498 into master
Merged Sylvain Henry requested to merge hsyl20/ghc:hsyl20-bindist-makefile-16498 into master
  1. Apr 09, 2019
    • Sylvain Henry's avatar
      Hadrian: fix library install paths in bindist Makefile (#16498) · fe40ddd9
      Sylvain Henry authored and Marge Bot's avatar Marge Bot committed 
      GHC now works out-of-the-box (i.e. without any wrapper script) by
assuming that @bin@ and @lib@ directories sit next to each other. In
particular, its RUNPATH uses $ORIGIN-based relative path to find the
libraries.

However, to be good citizens we want to support the case where @bin@ and
@lib@ directories (respectively BINDIR and LIBDIR) don't sit next to
each other or are renamed. To do that the install script simply creates
GHC specific @bin@ and @lib@ siblings directories into:

   LIBDIR/ghc-VERSION/{bin,lib}

Then it installs wrapper scripts into BINDIR that call the appropriate
programs into LIBDIR/ghc-VERSION/bin/.

The issue fixed by this patch is that libraries were not installed into
LIBDIR/ghc-VERSION/lib but directly into LIBDIR.
      fe40ddd9