Problem building the current source

[Simon Nash]

I am trying to build the current source using the instructions on this page:
http://hg.openjdk.java.net/jdk8/jdk8/raw-file/tip/README-builds.html

While running the "make all" step, I got the following errors:

....
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/adlparse.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/archDesc.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/arena.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/dfa.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/dict2.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/filebuff.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/forms.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/formsopt.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/formssel.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/main.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/opto/opcodes.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/output_c.cpp
Compiling /sd1/aarch32/hotspot/src/share/vm/adlc/output_h.cpp
Making adlc
make[6]: *** No rule to make target '/sd1/aarch32/hotspot/src/cpu/aarch32/vm/aarch32.ad', needed by '../generated/adfiles/linux_aarch32.ad'.  Stop.
make[5]: *** [ad_stuff] Error 2
/sd1/aarch32/hotspot/make/linux/makefiles/top.make:91: recipe for target 'ad_stuff' failed
/sd1/aarch32/hotspot/make/linux/Makefile:297: recipe for target 'product' failed
make[4]: *** [product] Error 2
make[3]: *** [generic_build2] Error 2
Makefile:230: recipe for target 'generic_build2' failed
make[2]: *** [product] Error 2
Makefile:177: recipe for target 'product' failed
make[1]: *** [/sd1/aarch32/build/linux-aarch32-normal-server-release/hotspot/_hotspot.timestamp] Error 2
HotspotWrapper.gmk:44: recipe for target '/sd1/aarch32/build/linux-aarch32-normal-server-release/hotspot/_hotspot.timestamp' failed
/sd1/aarch32//make/Main.gmk:108: recipe for target 'hotspot-only' failed
make: *** [hotspot-only] Error 2

Any pointers for how to solve this would be much appreciated.

Many thanks,
Simon Nash