On the fuloong mips machine, in the mips64el branch, "make" results in the 
following:

/bin/mkdir -p `dirname "guix/derivations.go"`
LC_ALL=C                                                        \
        ./pre-inst-env                                  \
        /usr/bin/guild compile -L "." -L "."    \
          -Wformat -Wunbound-variable -Warity-mismatch                  \
          --target="mips64el-unknown-linux-gnu"                                         
\
          -o "guix/derivations.go" "guix/derivations.scm"
Backtrace:
In ice-9/boot-9.scm:
2580: 19 [resolve-interface (guix store) #:select ...]
2505: 18 [#<procedure cd3850 at ice-9/boot-9.scm:2493:4 (name #:optional 
autoload version #:key ensure)> # ...]
2772: 17 [try-module-autoload (guix store) #f]
2111: 16 [save-module-excursion #<procedure 10990a8 at 
ice-9/boot-9.scm:2773:17 ()>]
2783: 15 [#<procedure 10990a8 at ice-9/boot-9.scm:2773:17 ()>]
In unknown file:
   ?: 14 [primitive-load-path "guix/store" #f]
In ice-9/eval.scm:
 480: 13 [#<procedure c7c6f0 at ice-9/eval.scm:474:4 (exp)> (define-module 
# # ...)]
In ice-9/psyntax.scm:
1101: 12 [expand-top-sequence ((define-module (guix store) #:use-module 
...)) () ...]
 986: 11 [scan ((define-module (guix store) #:use-module ...)) () ...]
 270: 10 [scan ((#(syntax-object let # ...) (#) (# #) ...)) () ...]
In ice-9/eval.scm:
 392: 9 [eval # ()]
In ice-9/boot-9.scm:
2667: 8 [define-module* (guix store) #:filename ...]
2642: 7 [resolve-imports (((guix utils)) ((guix config)) ((rnrs 
bytevectors)) ...)]
2580: 6 [resolve-interface (guix utils) #:select ...]
2505: 5 [#<procedure cd3850 at ice-9/boot-9.scm:2493:4 (name #:optional 
autoload version #:key ensure)> # ...]
2772: 4 [try-module-autoload (guix utils) #f]
2111: 3 [save-module-excursion #<procedure 10df060 at 
ice-9/boot-9.scm:2773:17 ()>]
2783: 2 [#<procedure 10df060 at ice-9/boot-9.scm:2773:17 ()>]
In unknown file:
   ?: 1 [primitive-load-path "guix/utils" #f]
In ice-9/boot-9.scm:
 106: 0 [#<procedure c86440 at ice-9/boot-9.scm:97:6 (thrown-k . args)> 
misc-error ...]

ice-9/boot-9.scm:106:20: In procedure #<procedure c86440 at 
ice-9/boot-9.scm:97:6 (thrown-k . args)>:
ice-9/boot-9.scm:106:20: In procedure make_objcode_from_file: bad header on 
object file: "GOOF----LE-8-2.0"
make[2]: *** [guix/derivations.go] Error 1
make[2]: Leaving directory `/home/enge/guix-src'

Which information would you need to understand the problem?

Andreas