ghc-6.8 configure does not recognise 32bit userland on ppc64

Building 6.8 (2007.09.12 through 2007.09.17) out of the box with

./configure

make all

fails after half an hour with assembler errors indicating that it tries to compile 64bit code on a 32bit userland (on ppc64 gentoo, on the system running the buildbot). The build goes through with

    GhcUnregisterised=YES

    SplitObjs=NO

in mk/build.mk, but I think that the release should work without users editing mk/build.mk.

Wolfram

../compiler/ghc-inplace -optc-O -optc-Wall -optc-W -optc-Wstrict-prototypes -optc-Wmissing-prototypes -optc-Wmissing-declarations -optc-Winline -optc-Waggregate-return -optc-I../includes -optc-I. -optc-Iparallel -optc-Ism -optc-DCOMPILING_RTS -optc-fomit-frame-pointer -optc-DNOSMP -optc-I../gmp/gmpbuild -optc-fno-strict-aliasing -optc-w -H16m -O -optc-O2 -package-name rts -optc-DNOSMP -static -I../gmp/gmpbuild -I. -#include HCIncludes.h -dcmm-lint     -c StgCRun.c -o StgCRun.o

/tmp/ghc16536_0/ghc16536_0.s: Assembler messages:

/tmp/ghc16536_0/ghc16536_0.s:11:0:
     Error: junk at end of line, first unrecognized character is `@'

/tmp/ghc16536_0/ghc16536_0.s:15:0:
     Error: junk at end of line, first unrecognized character is `@'

make[1]: *** [StgCRun.o] Error 1

make: *** [stage1] Error 1