build: avoid make jobserver warnings

I observe:

	» make -j8 CCOPTS=-ggdb3
	lib
	make[1]: warning: -j8 forced in submake: resetting jobserver mode.
	make[1]: Nothing to be done for 'all'.
	ip
	make[1]: warning: -j8 forced in submake: resetting jobserver mode.
	    CC       ipntable.o

MFLAGS is a historic variable of some kind; removing it fixes the
jobserver issue.

Signed-off-by: Jan Engelhardt <jengelh@inai.de>
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/Makefile b/Makefile
index cadda235863df39f829b4109f48486bb5356a72e..5b040415a12bbf124a1998806bf8c69a749f164e 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -63,7 +63,7 @@ LDLIBS += $(LIBNETLINK)
 all: config.mk
        @set -e; \
        for i in $(SUBDIRS); \
-       do echo; echo $$i; $(MAKE) $(MFLAGS) -C $$i; done
+       do echo; echo $$i; $(MAKE) -C $$i; done
 
 .PHONY: clean clobber distclean check cscope version
 
@@ -101,11 +101,11 @@ version:
 
 clean:
        @for i in $(SUBDIRS) testsuite; \
-       do $(MAKE) $(MFLAGS) -C $$i clean; done
+       do $(MAKE) -C $$i clean; done
 
 clobber:
        touch config.mk
-       $(MAKE) $(MFLAGS) clean
+       $(MAKE) clean
        rm -f config.mk cscope.*
 
 distclean: clobber