GDC Build failure (gcc-6-20150412)

g++ -c   -g -O2 -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE  -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -fno-common  -DHAVE_CONFIG_H -I. -I. -I../../gcc-6-20150412/gcc -I../../gcc-6-20150412/gcc/. -I../../gcc-6-20150412/gcc/../include -I../../gcc-6-20150412/gcc/../libcpp/include -Ino/include -Ino/include -Ino/include  -I../../gcc-6-20150412/gcc/../libdecnumber -I../../gcc-6-20150412/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc-6-20150412/gcc/../libbacktrace   -o caller-save.o -MT caller-save.o -MMD -MP -MF ./.deps/caller-save.TPo ../../gcc-6-20150412/gcc/caller-save.c
make[2]: *** [s-attrtab] Killed
make[2]: *** Waiting for unfinished jobs....
/bin/bash: line 1: 20343 Killed                  build/genautomata ../../gcc-6-20150412/gcc/common.md ../../gcc-6-20150412/gcc/config/arm/arm.md insn-conditions.md > tmp-automata.c
make[2]: *** [s-automata] Error 137
make[2]: Leaving directory `/Users/jens/timo/build-gcc/gcc'
make[1]: *** [all-gcc] Error 2
make[1]: Leaving directory `/Users/jens/timo/build-gcc'
make: *** [all] Error 2