diff --git a/Makefile b/Makefile
index aa0f170f91..4f1278737d 100644
--- a/Makefile
+++ b/Makefile
@@ -121,24 +121,22 @@ help_all: help_usage help_third_party help_cc help_python help_java help_dotnet
 
 .PHONY: build_all
 build_all: cc python java dotnet
-	@echo Or-tools has been built for $(BUILT_LANGUAGES)
+	@echo Or-tools has been built for "$(BUILT_LANGUAGES)"
 
 .PHONY: check_all
 check_all: check_cc check_python check_java check_dotnet
-	@echo Or-tools has been built and checked for $(BUILT_LANGUAGES)
+	@echo Or-tools has been built and checked for "$(BUILT_LANGUAGES)"
 
 .PHONY: test_all
 test_all: test_cc test_python test_java test_dotnet
-	@echo Or-tools have been built and tested for $(BUILT_LANGUAGES)
+	@echo Or-tools have been built and tested for "$(BUILT_LANGUAGES)"
 
 .PHONY: clean_all
-clean_all: #clean_cc clean_python clean_java clean_dotnet clean_archive clean_third_party
+clean_all: clean_cc clean_python clean_java clean_dotnet clean_archive clean_third_party
 	-$(DELREC) $(BIN_DIR)
 	-$(DELREC) $(LIB_DIR)
 	-$(DELREC) $(OBJ_DIR)
-	@echo NNN $(BUILT_LANGUAGES)
-	@echo Or-Tools has been cleaned for $(BUILT_LANGUAGES)
-	@echo AAA
+	@echo Or-Tools has been cleaned for "$(BUILT_LANGUAGES)"
 
 .PHONY: detect_all
 detect_all: detect_port detect_third_party detect_cc detect_python detect_java detect_dotnet detect_archive
diff --git a/makefiles/Makefile.third_party.win.mk b/makefiles/Makefile.third_party.win.mk
index 253d33b7fb..7172db9baf 100644
--- a/makefiles/Makefile.third_party.win.mk
+++ b/makefiles/Makefile.third_party.win.mk
@@ -37,7 +37,7 @@ dependencies/ortools.sln: | dependencies
 	-DUSE_GLPK=$(USE_GLPK) \
 	-DCMAKE_INSTALL_PREFIX=$(OR_ROOT_FULL)
 
-.PHONY: clean_third_party # Clean everything. Remember to also delete archived dependencies, i.e. in the event of download failure, etc.
+.PHONY: clean_third_party
 clean_third_party:
 	-$(DEL) Makefile.local
 	-$(DELREC) dependencies\\*
@@ -50,7 +50,6 @@ clean_third_party:
 .PHONY: detect_third_party # Show variables used to find third party
 detect_third_party:
 	@echo Relevant info on third party:
-	@echo WINDOWS_SCIP_DIR = $(WINDOWS_SCIP_DIR)
 	@echo USE_COINOR = $(USE_COINOR)
 	@echo USE_SCIP = $(USE_SCIP)
 ifdef WINDOWS_GLPK_DIR