Bug#685112: freefoam: FTBFS - build output directories not created

[Aaron M. Ucko]

Source: freefoam
Version: 0.1.0+dfsg-1
Severity: serious
Justification: fails to build from source

For some reason, builds of freefoam on (at least) powerpc, s390, and
s390x have been failing with errors about missing build output directories:

cd /.../freefoam-0.1.0+dfsg/obj-powerpc-linux-gnu/src/Pstream/dummy && /usr/bin/g++   -DdummyPstream_EXPORTS -DDP -DNoRepository -g -O2 -fstack-protector --param=ssp-buffer-size=4 -Wformat -Werror=format-security -D_FORTIFY_SOURCE=2 -fpermissive -D_FORTIFY_SOURCE=2 -fPIC -I/.../freefoam-0.1.0+dfsg/obj-powerpc-linux-gnu/include    -D -o CMakeFiles/dummyPstream.dir/dummyIPstreamImpl.C.o -c /.../freefoam-0.1.0+dfsg/src/Pstream/dummy/dummyIPstreamImpl.C
g++: error: CMakeFiles/dummyPstream.dir/dummyIPstreamImpl.C.o: No such file or directory

Could you please take a look?

Thanks!