build: use $(clean) shorthand for clean targets

Collect all the clean targets as we are going to modify it shortly.
Also, this is inspired by Linux's Kbuild.

"Kbuild.include" isn't included by "Makefile", but the "_clean" target
is only used by Rules.mk which include Kbuild.include.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>

diff --git a/xen/Makefile b/xen/Makefile
index 72bc899246226195b9b7fa3945d979c06fe31770..65bd913cd13378f884d5db2316d33be099ae31e0 100644 (file)
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -120,14 +120,14 @@ _debug:
 .PHONY: _clean
 _clean: delete-unfresh-files
        $(MAKE) -C tools clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C include clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C common clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C drivers clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C xsm clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C crypto clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/arm clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/x86 clean
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C test clean
+       $(MAKE) $(clean) include
+       $(MAKE) $(clean) common
+       $(MAKE) $(clean) drivers
+       $(MAKE) $(clean) xsm
+       $(MAKE) $(clean) crypto
+       $(MAKE) $(clean) arch/arm
+       $(MAKE) $(clean) arch/x86
+       $(MAKE) $(clean) test
        $(MAKE) -f $(BASEDIR)/tools/kconfig/Makefile.kconfig ARCH=$(ARCH) SRCARCH=$(SRCARCH) clean
        find . \( -name "*.o" -o -name ".*.d" -o -name ".*.d2" -o -name "*.gcno" \) -exec rm -f {} \;
        rm -f include/asm $(TARGET) $(TARGET).gz $(TARGET).efi $(TARGET).efi.map $(TARGET)-syms $(TARGET)-syms.map *~ core

diff --git a/xen/Rules.mk b/xen/Rules.mk
index cc9c71bb13278b298ae27dc6e78d520cb2b9a4a0..e3b19319b1f58902b89cdc0dc4350e651be7954b 100644 (file)
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -189,7 +189,7 @@ FORCE:
 clean:: $(addprefix _clean_, $(subdir-all))
        rm -f *.o .*.o.tmp *~ core $(DEPS_RM)
 _clean_%/: FORCE
-       $(MAKE) -f $(BASEDIR)/Rules.mk -C $* clean
+       $(MAKE) $(clean) $*
 
 SRCPATH := $(patsubst $(BASEDIR)/%,%,$(CURDIR))
 

diff --git a/xen/scripts/Kbuild.include b/xen/scripts/Kbuild.include
index a5c462fd9777868f276bc5766b2f64151de46761..2465cc4060c3da96aba76ee9cb8969f6bec7bbaa 100644 (file)
--- a/xen/scripts/Kbuild.include
+++ b/xen/scripts/Kbuild.include
@@ -5,3 +5,8 @@
 # cc-ifversion
 # Usage:  EXTRA_CFLAGS += $(call cc-ifversion, -lt, 0402, -O1)
 cc-ifversion = $(shell [ $(CONFIG_GCC_VERSION)0 $(1) $(2)000 ] && echo $(3) || echo $(4))
+
+# Shorthand for $(MAKE) clean
+# Usage:
+# $(MAKE) $(clean) dir
+clean := -f $(BASEDIR)/Rules.mk clean -C