make install failure on integer-gmp

After building the current GHC HEAD and trying to do a make install, it fails with the following error

ghc-cabal.exe: integer-gmp-0.2.0.0: library-dirs: @GMP_LIB_DIRS@ is a relative

path (use --force to override)

make[1]: *** [install_packages] Error 1

looking in libraries\integer-gmp\dist-install\package-data.mk I found the following:

libraries/integer-gmp_dist-install_INCLUDE_DIRS = @GMP_INCLUDE_DIRS@

libraries/integer-gmp_dist-install_INCLUDES = 

libraries/integer-gmp_dist-install_INSTALL_INCLUDES = 

libraries/integer-gmp_dist-install_EXTRA_LIBRARIES = 

libraries/integer-gmp_dist-install_EXTRA_LIBDIRS = @GMP_LIB_DIRS@

It seems those were never expanded, but since no extra dependencies are listed, I just removed them and install succeeded.