message: Using $(MAKE) variable instead of hardcoding parameters.
  That way, that make-invocation will inherit parameters given on the
  command-line, e.g. the -j job parameter.
diff: @@ -2,7 +2,8 @@ release:
  mkdir -p build/tests;
  mkdir -p build/dist;
  mkdir -p dist;
  - cd build; cmake ../ -DCMAKE_BUILD_TYPE=Release; make -j 4
  + cd build; cmake ../ -DCMAKE_BUILD_TYPE=Release
  + $(MAKE) -C build
  cd build; ../tests/regression.tcl mt=0 show_diff
  test:
  @@ -15,4 +16,3 @@ clean:
  install:
  cd build; make install
  -
  