Merge pull request #869 from dylanjgscott/master

Use `type cmp` to test for cmp in Makefile

diff --cc Makefile
index 9cc77c55ccaecb2d610e4d21cda6dc84c351393f,636eae3e5b4e3177fdcf7c70a0af949588705bd1..550be819566d4317df1ef8cb89c16e5d55de2cee
--- 1/Makefile
--- 2/Makefile
+++ b/Makefile
@@@ -485,11 -485,10 +485,11 @@@ $(SUBPROJECTS): %: %-allk
  
  # Let's match everything, we handle all the rule parsing ourselves
  .PHONY: %
 -%: 
 +%:
        # Check if we have the CMP tool installed
-       cmp --version >/dev/null 2>&1; if [ $$? -gt 0 ]; then printf "$(MSG_NO_CMP)"; exit 1; fi;
+       cmp $(ROOT_DIR)/Makefile $(ROOT_DIR)/Makefile >/dev/null 2>&1; if [ $$? -gt 0 ]; then printf "$(MSG_NO_CMP)"; exit 1; fi;
        # Check if the submodules are dirty, and display a warning if they are
 +ifndef SKIP_GIT
        git submodule status --recursive 2>/dev/null | \
        while IFS= read -r x; do \
                case "$$x" in \