netdev - [PATCH iproute2-next] Makefile: use make -C to change directory

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Message-Id: <acccd66f89f738810474804755c9d6f6f7435c79.1560364291.git.aclaudi@redhat.com>
Date:   Wed, 12 Jun 2019 20:35:42 +0200
From:   Andrea Claudi <aclaudi@...hat.com>
To:     netdev@...r.kernel.org
Cc:     stephen@...workplumber.org, dsahern@...nel.org
Subject: [PATCH iproute2-next] Makefile: use make -C to change directory

make provides a handy -C option to change directory before reading
the makefiles or doing anything else.

Use that instead of the "cd dir && make && cd .." pattern, thus
simplifying sintax for some makefiles.

Signed-off-by: Andrea Claudi <aclaudi@...hat.com>
---
 Makefile                    | 3 ++-
 testsuite/Makefile          | 6 +++---
 testsuite/iproute2/Makefile | 8 ++++----
 3 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/Makefile b/Makefile
index 48f469b0d0a85..a87826fee84dd 100644
--- a/Makefile
+++ b/Makefile
@@ -114,7 +114,8 @@ clobber:
 distclean: clobber
 
 check: all
-	cd testsuite && $(MAKE) && $(MAKE) alltests
+	$(MAKE) -C testsuite
+	$(MAKE) -C testsuite alltests
 	@if command -v man >/dev/null 2>&1; then \
 		echo "Checking manpages for syntax errors..."; \
 		$(MAKE) -C man check; \
diff --git a/testsuite/Makefile b/testsuite/Makefile
index 7f247bbc1c803..94a4a8c646ef7 100644
--- a/testsuite/Makefile
+++ b/testsuite/Makefile
@@ -26,10 +26,10 @@ endif
 .PHONY: compile listtests alltests configure $(TESTS)
 
 configure:
-	echo "Entering iproute2" && cd iproute2 && $(MAKE) configure && cd ..;
+	$(MAKE) -C iproute2 configure
 
 compile: configure generate_nlmsg
-	echo "Entering iproute2" && cd iproute2 && $(MAKE) && cd ..;
+	$(MAKE) -C iproute2
 
 listtests:
 	@for t in $(TESTS); do \
@@ -51,7 +51,7 @@ clean: testclean
 	$(MAKE) -C tools clean
 
 distclean: clean
-	echo "Entering iproute2" && cd iproute2 && $(MAKE) distclean && cd ..;
+	$(MAKE) -C iproute2 distclean
 
 $(TESTS): generate_nlmsg testclean
 ifeq (,$(IPVERS))
diff --git a/testsuite/iproute2/Makefile b/testsuite/iproute2/Makefile
index b8a7d5153175a..37ffa065ab328 100644
--- a/testsuite/iproute2/Makefile
+++ b/testsuite/iproute2/Makefile
@@ -4,7 +4,7 @@ SUBDIRS := $(filter-out Makefile,$(wildcard *))
 
 all: configure
 	@for dir in $(SUBDIRS); do \
-		echo "Entering $$dir" && cd $$dir && $(MAKE) && cd ..; \
+		$(MAKE) -C $$dir; \
 	done
 
 link:
@@ -14,17 +14,17 @@ link:
 
 configure: link
 	@for dir in $(SUBDIRS); do \
-		echo "Entering $$dir" && cd $$dir && if [ -f configure ]; then ./configure; fi && cd ..; \
+		if [ -f configure ]; then ./$$dir/configure; fi \
 	done
 
 clean: link
 	@for dir in $(SUBDIRS); do \
-		echo "Entering $$dir" && cd $$dir && $(MAKE) clean && cd ..; \
+		$(MAKE) -C $$dir clean; \
 	done
 
 distclean: clean
 	@for dir in $(SUBDIRS); do \
-		echo "Entering $$dir" && cd $$dir && $(MAKE) distclean && cd ..; \
+		$(MAKE) -C $$dir distclean; \
 	done
 
 show: link
-- 
2.20.1