ID_H_TARGET no longer created after running make
It seems as if the file .id.h.time (from the target ID_H_TARGET) is no longer automatically created
while running "make" on trunk.
A subsequent "make install" fails if the previous Ruby installation has already been removed because
BASE_RUBY would be needed to generate ID_H_TARGET. I used "touch .id.h.time" as a workaround,
but I guess that "make install" should be working without a Ruby executable in the PATH?