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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [xen staging] build: build everything from the root dir, use obj=$subdir
commit 7a3bcd2babcc7d9952bcf174f3705ebd9290671a
Author: Anthony PERARD <anthony.perard@xxxxxxxxxx>
AuthorDate: Fri Feb 25 11:01:15 2022 +0100
Commit: Jan Beulich <jbeulich@xxxxxxxx>
CommitDate: Fri Feb 25 11:01:15 2022 +0100
build: build everything from the root dir, use obj=$subdir
A subdirectory is now built by setting "$(obj)" instead of changing
directory. "$(obj)" should always be set when using "Rules.mk" and
thus a shortcut "$(build)" is introduced and should be used.
A new variable "$(need-builtin)" is introduce. It is to be used
whenever a "built_in.o" is wanted from a subdirectory. "built_in.o"
isn't the main target anymore, and thus only needs to depends on the
objects that should be part of "built_in.o".
Introduce $(srctree) and $(objtree) to replace $(BASEDIR) in cases a
relative path is better, and $(abs_srctree) and $(abs_objtree) which
have an absolute path.
DEPS is updated as the existing macro to deal with it doesn't know
about $(obj).
There's some changes in "Rules.mk" which in addition to deal with
"$(obj)" also make it's looks more like "Makefile.build" from Linux
v5.12.
test/Makefile doesn't need special handling in order to build
everything under test/, Rules.mk will visit test/livepatch via
$(subdir-y), thus "tests" "all" and "build" target are removed.
"subtree-force-update" target isn't useful so it is removed as well.
test/livepatch/Makefile doesn't need default target anymore, Rules.mk
will build everything in $(extra-y) and thus all *.livepatch.
Adjust cloc recipe: dependency files generated by CC will now have the
full path to the source file, so we don't need to prepend the
subdirectory. This fix some issue with source not been parsed by cloc
before. Also source from tools/kconfig would be listed with changes in
this patch so adjust the find command to stop listing the "tools"
directory and thus kconfig. With a default build of Xen on X86, they
are a few new files parsed by cloc:
arch/x86/x86_64/compat/mm.c
arch/x86/x86_64/mm.c
common/compat/domain.c
common/compat/memory.c
common/compat/xlat.c
Signed-off-by: Anthony PERARD <anthony.perard@xxxxxxxxxx>
Acked-by: Bob Eshleman <bobbyeshleman@xxxxxxxxx>
Acked-by: Julien Grall <jgrall@xxxxxxxxxx>
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Daniel P. Smith <dpsmith@xxxxxxxxxxxxxxxxxxxx> # XSM
---
xen/Makefile | 36 +++++++-----
xen/Rules.mk | 138 +++++++++++++++++++++++++++++---------------
xen/arch/arm/Makefile | 4 +-
xen/arch/arm/Rules.mk | 4 --
xen/arch/arm/arch.mk | 4 +-
xen/arch/riscv/arch.mk | 4 +-
xen/arch/x86/Makefile | 11 ++--
xen/arch/x86/Rules.mk | 4 +-
xen/arch/x86/arch.mk | 12 ++--
xen/arch/x86/boot/Makefile | 8 +--
xen/build.mk | 12 +++-
xen/include/Makefile | 6 +-
xen/scripts/Kbuild.include | 6 ++
xen/test/Makefile | 7 +--
xen/test/livepatch/Makefile | 6 --
xen/xsm/flask/Makefile | 2 +-
xen/xsm/flask/ss/Makefile | 2 +-
17 files changed, 162 insertions(+), 104 deletions(-)
diff --git a/xen/Makefile b/xen/Makefile
index 6e4ea200aa..7912e35503 100644
--- a/xen/Makefile
+++ b/xen/Makefile
@@ -22,6 +22,15 @@ export CHECKPOLICY ?= checkpolicy
export BASEDIR := $(CURDIR)
export XEN_ROOT := $(BASEDIR)/..
+abs_objtree := $(CURDIR)
+abs_srctree := $(CURDIR)
+
+export abs_srctree abs_objtree
+
+srctree := .
+objtree := .
+export srctree objtree
+
# Do not use make's built-in rules and variables
MAKEFLAGS += -rR
@@ -47,7 +56,7 @@ export KCONFIG_CONFIG ?= .config
export CC CXX LD
-export TARGET := $(BASEDIR)/xen
+export TARGET := xen
.PHONY: default
default: build
@@ -250,7 +259,7 @@ endif
CFLAGS += -nostdinc -fno-builtin -fno-common
CFLAGS += -Werror -Wredundant-decls -Wno-pointer-arith
$(call cc-option-add,CFLAGS,CC,-Wvla)
-CFLAGS += -pipe -D__XEN__ -include $(BASEDIR)/include/xen/config.h
+CFLAGS += -pipe -D__XEN__ -include $(srctree)/include/xen/config.h
CFLAGS-$(CONFIG_DEBUG_INFO) += -g
ifneq ($(CONFIG_CC_IS_CLANG),y)
@@ -349,10 +358,10 @@ _install: $(TARGET)$(CONFIG_XEN_INSTALL_SUFFIX)
.PHONY: tests
tests:
- $(MAKE) -f $(BASEDIR)/Rules.mk -C test tests
+ $(Q)$(MAKE) $(build)=test
.PHONY: install-tests
install-tests:
- $(MAKE) -f $(BASEDIR)/Rules.mk -C test install
+ $(Q)$(MAKE) $(build)=test install
.PHONY: _uninstall
_uninstall: D=$(DESTDIR)
@@ -408,16 +417,16 @@ $(TARGET).gz: $(TARGET)
$(TARGET): FORCE
$(MAKE) -C tools
- $(MAKE) -f $(BASEDIR)/Rules.mk include/xen/compile.h
+ $(Q)$(MAKE) $(build)=. include/xen/compile.h
[ -e arch/$(TARGET_ARCH)/efi ] && for f in $$(cd common/efi; echo
*.[ch]); \
do test -r arch/$(TARGET_ARCH)/efi/$$f || \
ln -nsf ../../../common/efi/$$f arch/$(TARGET_ARCH)/efi/; \
done; \
true
- $(MAKE) -f $(BASEDIR)/Rules.mk -C include
- $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) include
- $(MAKE) -f $(BASEDIR)/Rules.mk
arch/$(TARGET_ARCH)/include/asm/asm-offsets.h
- $(MAKE) -f $(BASEDIR)/Rules.mk MKRELOC=$(MKRELOC)
'ALL_OBJS=$(ALL_OBJS-y)' 'ALL_LIBS=$(ALL_LIBS-y)' $@
+ $(Q)$(MAKE) $(build)=include all
+ $(Q)$(MAKE) $(build)=arch/$(TARGET_ARCH) include
+ $(Q)$(MAKE) $(build)=. arch/$(TARGET_ARCH)/include/asm/asm-offsets.h
+ $(Q)$(MAKE) $(build)=. MKRELOC=$(MKRELOC) 'ALL_OBJS=$(ALL_OBJS-y)'
'ALL_LIBS=$(ALL_LIBS-y)' $@
SUBDIRS = xsm arch/$(TARGET_ARCH) common drivers lib test
define all_sources
@@ -463,19 +472,18 @@ _MAP:
$(NM) -n $(TARGET)-syms | grep -v '\(compiled\)\|\(\.o$$\)\|\( [aUw]
\)\|\(\.\.ng$$\)\|\(LASH[RL]DI\)' > System.map
%.o %.i %.s: %.c FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $(*D) $(@F)
+ $(Q)$(MAKE) $(build)=$(*D) $(*D)/$(@F)
%.o %.s: %.S FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $(*D) $(@F)
+ $(Q)$(MAKE) $(build)=$(*D) $(*D)/$(@F)
%/: FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $* built_in.o built_in_bin.o
+ $(Q)$(MAKE) $(build)=$* need-builtin=1
.PHONY: cloc
cloc:
- find . -name '*.o.d' | while read f; do \
+ find . -name tools -prune -o -name '*.o.d' -print | while read f; do \
for sf in $$(grep -o "[a-zA-Z0-9_/-]*\.[cS]" $$f); do \
- sf="$$(dirname $$f)/$$sf"; \
test -f "$$sf" && echo "$$sf"; \
done; \
done | cloc --list-file=-
diff --git a/xen/Rules.mk b/xen/Rules.mk
index 1e7f47a3d8..67112e0077 100644
--- a/xen/Rules.mk
+++ b/xen/Rules.mk
@@ -3,19 +3,29 @@
# Makefile and are consumed by Rules.mk
#
-obj := .
+ifndef obj
+$(warning kbuild: Rules.mk is included improperly)
+endif
+
src := $(obj)
+PHONY := __build
+__build:
+
-include $(BASEDIR)/include/config/auto.conf
include $(XEN_ROOT)/Config.mk
include $(BASEDIR)/scripts/Kbuild.include
# Initialise some variables
+obj-y :=
lib-y :=
targets :=
+subdir-y :=
CFLAGS-y :=
AFLAGS-y :=
+nocov-y :=
+noubsan-y :=
SPECIAL_DATA_SECTIONS := rodata $(foreach a,1 2 4 8 16, \
$(foreach w,1 2 4, \
@@ -50,27 +60,54 @@ cmd_objcopy = $(OBJCOPY) $(OBJCOPYFLAGS) $< $@
quiet_cmd_binfile = BINFILE $@
cmd_binfile = $(SHELL) $(BASEDIR)/tools/binfile $(BINFILE_FLAGS) $@ $(2)
-define gendep
- ifneq ($(1),$(subst /,:,$(1)))
- DEPS += $(dir $(1)).$(notdir $(1)).d
- endif
-endef
-$(foreach o,$(filter-out %/,$(obj-y) $(obj-bin-y) $(extra-y)),$(eval $(call
gendep,$(o))))
+# Figure out what we need to build from the various variables
+# ===========================================================================
+
+# Libraries are always collected in one lib file.
+# Filter out objects already built-in
+lib-y := $(filter-out $(obj-y), $(sort $(lib-y)))
+
+# Subdirectories we need to descend into
+subdir-y := $(sort $(subdir-y) $(patsubst %/,%,$(filter %/, $(obj-y))))
# Handle objects in subdirs
-# ---------------------------------------------------------------------------
-# o if we encounter foo/ in $(obj-y), replace it by foo/built_in.o
-# and add the directory to the list of dirs to descend into: $(subdir-y)
-subdir-y := $(subdir-y) $(filter %/, $(obj-y))
+# - if we encounter foo/ in $(obj-y), replace it by foo/built_in.o
+ifdef need-builtin
obj-y := $(patsubst %/, %/built_in.o, $(obj-y))
+else
+obj-y := $(filter-out %/, $(obj-y))
+endif
-# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
-# tell kbuild to descend
-subdir-obj-y := $(filter %/built_in.o, $(obj-y))
+# Add subdir path
-# Libraries are always collected in one lib file.
-# Filter out objects already built-in
-lib-y := $(filter-out $(obj-y), $(sort $(lib-y)))
+extra-y := $(addprefix $(obj)/,$(extra-y))
+targets := $(addprefix $(obj)/,$(targets))
+lib-y := $(addprefix $(obj)/,$(lib-y))
+obj-y := $(addprefix $(obj)/,$(obj-y))
+obj-bin-y := $(addprefix $(obj)/,$(obj-bin-y))
+subdir-y := $(addprefix $(obj)/,$(subdir-y))
+nocov-y := $(addprefix $(obj)/,$(nocov-y))
+noubsan-y := $(addprefix $(obj)/,$(noubsan-y))
+
+# subdir-builtin may contain duplications. Use $(sort ...)
+subdir-builtin := $(sort $(filter %/built_in.o, $(obj-y)))
+
+targets-for-builtin := $(extra-y)
+
+ifneq ($(strip $(lib-y)),)
+ targets-for-builtin += $(obj)/lib.a
+endif
+
+ifdef need-builtin
+ targets-for-builtin += $(obj)/built_in.o
+ ifneq ($(strip $(obj-bin-y)),)
+ ifeq ($(CONFIG_LTO),y)
+ targets-for-builtin += $(obj)/built_in_bin.o
+ endif
+ endif
+endif
+
+targets += $(targets-for-builtin)
$(filter %.init.o,$(obj-y) $(obj-bin-y) $(extra-y)): CFLAGS-y +=
-DINIT_SECTIONS_ONLY
@@ -122,29 +159,28 @@ quiet_cmd_cc_builtin = CC $@
cmd_cc_builtin = \
$(CC) $(XEN_CFLAGS) -c -x c /dev/null -o $@
+# To build objects in subdirs, we need to descend into the directories
+$(subdir-builtin): $(obj)/%/built_in.o: $(obj)/% ;
+
quiet_cmd_ld_builtin = LD $@
ifeq ($(CONFIG_LTO),y)
cmd_ld_builtin = \
- $(LD_LTO) -r -o $@ $(filter $(obj-y),$(real-prereqs))
+ $(LD_LTO) -r -o $@ $(real-prereqs)
else
cmd_ld_builtin = \
- $(LD) $(XEN_LDFLAGS) -r -o $@ $(filter $(obj-y),$(real-prereqs))
+ $(LD) $(XEN_LDFLAGS) -r -o $@ $(real-prereqs)
endif
-built_in.o: $(obj-y) $(if $(strip $(lib-y)),lib.a) $(extra-y) FORCE
+$(obj)/built_in.o: $(obj-y) FORCE
$(call if_changed,$(if $(strip $(obj-y)),ld_builtin,cc_builtin))
-lib.a: $(lib-y) FORCE
+$(obj)/lib.a: $(lib-y) FORCE
$(call if_changed,ar)
-targets += built_in.o
-ifneq ($(strip $(lib-y)),)
-targets += lib.a
-endif
-targets += $(filter-out $(subdir-obj-y), $(obj-y) $(lib-y)) $(extra-y)
-targets += $(MAKECMDGOALS)
+targets += $(filter-out $(subdir-builtin), $(obj-y))
+targets += $(lib-y) $(MAKECMDGOALS)
-built_in_bin.o: $(obj-bin-y) $(extra-y)
+$(obj)/built_in_bin.o: $(obj-bin-y)
ifeq ($(strip $(obj-bin-y)),)
$(CC) $(a_flags) -c -x assembler /dev/null -o $@
else
@@ -155,23 +191,15 @@ endif
PHONY += FORCE
FORCE:
-%/built_in.o %/lib.a: FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $* built_in.o
-
-%/built_in_bin.o: FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $* built_in_bin.o
-
-SRCPATH := $(patsubst $(BASEDIR)/%,%,$(CURDIR))
-
quiet_cmd_cc_o_c = CC $@
ifeq ($(CONFIG_ENFORCE_UNIQUE_SYMBOLS),y)
cmd_cc_o_c = $(CC) $(c_flags) -c $< -o $(dot-target).tmp -MQ $@
- ifeq ($(CONFIG_CC_IS_CLANG)$(call clang-ifversion,-lt,600,y),yy)
- cmd_objcopy_fix_sym = $(OBJCOPY) --redefine-sym $<=$(SRCPATH)/$<
$(dot-target).tmp $@
+ ifneq ($(CONFIG_CC_IS_CLANG)$(call clang-ifversion,-lt,600,y),yy)
+ cmd_objcopy_fix_sym = \
+ $(OBJCOPY) --redefine-sym $(<F)=$< $(dot-target).tmp $@ && rm -f
$(dot-target).tmp
else
- cmd_objcopy_fix_sym = $(OBJCOPY) --redefine-sym $(<F)=$(SRCPATH)/$<
$(dot-target).tmp $@
+ cmd_objcopy_fix_sym = mv -f $(dot-target).tmp $@
endif
- cmd_objcopy_fix_sym += && rm -f $(dot-target).tmp
else
cmd_cc_o_c = $(CC) $(c_flags) -c $< -o $@
endif
@@ -181,13 +209,13 @@ define rule_cc_o_c
$(call cmd,objcopy_fix_sym)
endef
-%.o: %.c FORCE
+$(obj)/%.o: $(src)/%.c FORCE
$(call if_changed_rule,cc_o_c)
quiet_cmd_cc_o_S = CC $@
cmd_cc_o_S = $(CC) $(a_flags) -c $< -o $@
-%.o: %.S FORCE
+$(obj)/%.o: $(src)/%.S FORCE
$(call if_changed,cc_o_S)
@@ -205,7 +233,7 @@ define cmd_obj_init_o
$(OBJCOPY) $(foreach s,$(SPECIAL_DATA_SECTIONS),--rename-section
.$(s)=.init.$(s)) $< $@
endef
-$(filter %.init.o,$(obj-y) $(obj-bin-y) $(extra-y)): %.init.o: %.o FORCE
+$(filter %.init.o,$(obj-y) $(obj-bin-y) $(extra-y)): $(obj)/%.init.o:
$(obj)/%.o FORCE
$(call if_changed,obj_init_o)
quiet_cmd_cpp_i_c = CPP $@
@@ -217,19 +245,21 @@ cmd_cc_s_c = $(CC) $(filter-out -Wa$(comma)%,$(c_flags))
-S $< -o $@
quiet_cmd_cpp_s_S = CPP $@
cmd_cpp_s_S = $(CPP) $(call cpp_flags,$(a_flags)) -MQ $@ -o $@ $<
-%.i: %.c FORCE
+$(obj)/%.i: $(src)/%.c FORCE
$(call if_changed,cpp_i_c)
-%.s: %.c FORCE
+$(obj)/%.s: $(src)/%.c FORCE
$(call if_changed,cc_s_c)
-%.s: %.S FORCE
+$(obj)/%.s: $(src)/%.S FORCE
$(call if_changed,cpp_s_S)
# Linker scripts, .lds.S -> .lds
quiet_cmd_cpp_lds_S = LDS $@
cmd_cpp_lds_S = $(CPP) -P $(call cpp_flags,$(a_flags)) -D__LINKER__ -MQ $@ -o
$@ $<
+targets := $(filter-out $(PHONY), $(targets))
+
# Add intermediate targets:
# When building objects with specific suffix patterns, add intermediate
# targets that the final targets are derived from.
@@ -239,7 +269,18 @@ intermediate_targets = $(foreach sfx, $(2), \
# %.init.o <- %.o
targets += $(call intermediate_targets, .init.o, .o)
--include $(DEPS_INCLUDE)
+# Build
+# ---------------------------------------------------------------------------
+
+__build: $(targets-for-builtin) $(subdir-y)
+ @:
+
+# Descending
+# ---------------------------------------------------------------------------
+
+PHONY += $(subdir-y)
+$(subdir-y):
+ $(Q)$(MAKE) $(build)=$@ need-builtin=$(if $(filter $@/built_in.o,
$(subdir-builtin)),1)
# Read all saved command lines and dependencies for the $(targets) we
# may be building above, using $(if_changed{,_dep}). As an
@@ -250,6 +291,9 @@ existing-targets := $(wildcard $(sort $(targets)))
-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
+DEPS := $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).d)
+-include $(DEPS_INCLUDE)
+
# Declare the contents of the PHONY variable as phony. We keep that
# information in a variable so we can use it in if_changed and friends.
.PHONY: $(PHONY)
diff --git a/xen/arch/arm/Makefile b/xen/arch/arm/Makefile
index c993ce72a3..fd24f0212f 100644
--- a/xen/arch/arm/Makefile
+++ b/xen/arch/arm/Makefile
@@ -95,12 +95,12 @@ $(TARGET)-syms: $(BASEDIR)/prelink.o $(obj)/xen.lds
$(BASEDIR)/common/symbols-dummy.o -o $(@D)/.$(@F).0
$(NM) -pa --format=sysv $(@D)/.$(@F).0 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort
>$(@D)/.$(@F).0.S
- $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).0.o
+ $(MAKE) $(build)=$(@D) $(@D)/.$(@F).0.o
$(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< \
$(@D)/.$(@F).0.o -o $(@D)/.$(@F).1
$(NM) -pa --format=sysv $(@D)/.$(@F).1 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort
>$(@D)/.$(@F).1.S
- $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).1.o
+ $(MAKE) $(build)=$(@D) $(@D)/.$(@F).1.o
$(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< $(build_id_linker) \
$(@D)/.$(@F).1.o -o $@
$(NM) -pa --format=sysv $(@D)/$(@F) \
diff --git a/xen/arch/arm/Rules.mk b/xen/arch/arm/Rules.mk
index c6463a433e..e69de29bb2 100644
--- a/xen/arch/arm/Rules.mk
+++ b/xen/arch/arm/Rules.mk
@@ -1,4 +0,0 @@
-# head.o is built by descending into arch/arm/$(TARGET_SUBARCH), depends on the
-# part of $(ALL_OBJS) that will eventually recurse into $(TARGET_SUBARCH)/ and
-# build head.o
-arch/arm/$(TARGET_SUBARCH)/head.o: arch/arm/built_in.o ;
diff --git a/xen/arch/arm/arch.mk b/xen/arch/arm/arch.mk
index ba3f140e2e..4e3f701430 100644
--- a/xen/arch/arm/arch.mk
+++ b/xen/arch/arm/arch.mk
@@ -1,8 +1,8 @@
########################################
# arm-specific definitions
-CFLAGS += -I$(BASEDIR)/include
-CFLAGS += -I$(BASEDIR)/arch/$(TARGET_ARCH)/include
+CFLAGS += -I$(srctree)/include
+CFLAGS += -I$(srctree)/arch/$(TARGET_ARCH)/include
$(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))
$(call cc-option-add,CFLAGS,CC,-Wnested-externs)
diff --git a/xen/arch/riscv/arch.mk b/xen/arch/riscv/arch.mk
index 39ae6ffea9..694ba053ce 100644
--- a/xen/arch/riscv/arch.mk
+++ b/xen/arch/riscv/arch.mk
@@ -11,5 +11,5 @@ riscv-march-$(CONFIG_RISCV_ISA_C) := $(riscv-march-y)c
# -mcmodel=medlow would force Xen into the lower half.
CFLAGS += -march=$(riscv-march-y) -mstrict-align -mcmodel=medany
-CFLAGS += -I$(BASEDIR)/include
-CFLAGS += -I$(BASEDIR)/arch/$(TARGET_ARCH)/include
+CFLAGS += -I$(srctree)/include
+CFLAGS += -I$(srctree)/arch/$(TARGET_ARCH)/include
diff --git a/xen/arch/x86/Makefile b/xen/arch/x86/Makefile
index b90146b756..77d90d6eae 100644
--- a/xen/arch/x86/Makefile
+++ b/xen/arch/x86/Makefile
@@ -80,6 +80,9 @@ endif
extra-y += asm-macros.i
extra-y += xen.lds
+# Allows usercopy.c to include itself
+$(obj)/usercopy.o: CFLAGS-y += -iquote .
+
ifneq ($(CONFIG_HVM),y)
$(obj)/x86_emulate.o: CFLAGS-y += -Wno-unused-label
endif
@@ -129,13 +132,13 @@ $(TARGET)-syms: $(BASEDIR)/prelink.o $(obj)/xen.lds
$(NM) -pa --format=sysv $(@D)/.$(@F).0 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort \
>$(@D)/.$(@F).0.S
- $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).0.o
+ $(MAKE) $(build)=$(@D) $(@D)/.$(@F).0.o
$(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< $(build_id_linker) \
$(@D)/.$(@F).0.o -o $(@D)/.$(@F).1
$(NM) -pa --format=sysv $(@D)/.$(@F).1 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort
$(syms-warn-dup-y) \
>$(@D)/.$(@F).1.S
- $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).1.o
+ $(MAKE) $(build)=$(@D) $(@D)/.$(@F).1.o
$(LD) $(XEN_LDFLAGS) -T $(obj)/xen.lds -N $< $(build_id_linker) \
$(@D)/.$(@F).1.o -o $@
$(NM) -pa --format=sysv $(@D)/$(@F) \
@@ -202,14 +205,14 @@ endif
$(MKRELOC) $(foreach base,$(VIRT_BASE)
$(ALT_BASE),$(@D)/.$(@F).$(base).0) >$(@D)/.$(@F).0r.S
$(NM) -pa --format=sysv $(@D)/.$(@F).$(VIRT_BASE).0 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort
>$(@D)/.$(@F).0s.S
- $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).0r.o $(@D)/.$(@F).0s.o
+ $(MAKE) $(build)=$(@D) .$(@F).0r.o .$(@F).0s.o
$(foreach base, $(VIRT_BASE) $(ALT_BASE), \
$(LD) $(call EFI_LDFLAGS,$(base)) -T $(obj)/efi.lds -N $< \
$(@D)/.$(@F).0r.o $(@D)/.$(@F).0s.o $(note_file_option)
-o $(@D)/.$(@F).$(base).1 &&) :
$(MKRELOC) $(foreach base,$(VIRT_BASE)
$(ALT_BASE),$(@D)/.$(@F).$(base).1) >$(@D)/.$(@F).1r.S
$(NM) -pa --format=sysv $(@D)/.$(@F).$(VIRT_BASE).1 \
| $(BASEDIR)/tools/symbols $(all_symbols) --sysv --sort
>$(@D)/.$(@F).1s.S
- $(MAKE) -f $(BASEDIR)/Rules.mk $(@D)/.$(@F).1r.o $(@D)/.$(@F).1s.o
+ $(MAKE) $(build)=$(@D) .$(@F).1r.o .$(@F).1s.o
$(LD) $(call EFI_LDFLAGS,$(VIRT_BASE)) -T $(obj)/efi.lds -N $< \
$(@D)/.$(@F).1r.o $(@D)/.$(@F).1s.o $(note_file_option)
-o $@
$(NM) -pa --format=sysv $(@D)/$(@F) \
diff --git a/xen/arch/x86/Rules.mk b/xen/arch/x86/Rules.mk
index 7aef93f5f3..ff7c7dd68a 100644
--- a/xen/arch/x86/Rules.mk
+++ b/xen/arch/x86/Rules.mk
@@ -2,9 +2,9 @@
# x86-specific definitions
ifneq ($(filter -DHAVE_AS_QUOTED_SYM,$(XEN_CFLAGS)),)
-object_label_flags = '-D__OBJECT_LABEL__=$(subst $(BASEDIR)/,,$(CURDIR))/$@'
+object_label_flags = '-D__OBJECT_LABEL__=$@'
else
-object_label_flags = '-D__OBJECT_LABEL__=$(subst /,$$,$(subst -,_,$(subst
$(BASEDIR)/,,$(CURDIR))/$@))'
+object_label_flags = '-D__OBJECT_LABEL__=$(subst /,$$,$(subst -,_,$@))'
endif
c_flags += $(object_label_flags) $(CFLAGS_stack_boundary)
a_flags += $(object_label_flags) $(CFLAGS_stack_boundary)
diff --git a/xen/arch/x86/arch.mk b/xen/arch/x86/arch.mk
index 92fd198110..d6ae4cc2f5 100644
--- a/xen/arch/x86/arch.mk
+++ b/xen/arch/x86/arch.mk
@@ -3,10 +3,10 @@
export XEN_IMG_OFFSET := 0x200000
-CFLAGS += -I$(BASEDIR)/include
-CFLAGS += -I$(BASEDIR)/arch/$(TARGET_ARCH)/include
-CFLAGS += -I$(BASEDIR)/arch/x86/include/asm/mach-generic
-CFLAGS += -I$(BASEDIR)/arch/x86/include/asm/mach-default
+CFLAGS += -I$(srctree)/include
+CFLAGS += -I$(srctree)/arch/$(TARGET_ARCH)/include
+CFLAGS += -I$(srctree)/arch/x86/include/asm/mach-generic
+CFLAGS += -I$(srctree)/arch/x86/include/asm/mach-default
CFLAGS += -DXEN_IMG_OFFSET=$(XEN_IMG_OFFSET)
# Prevent floating-point variables from creeping into Xen.
@@ -99,7 +99,7 @@ efi-nr-fixups := $(shell $(OBJDUMP) -p $(efi-check).efi |
grep '^[[:blank:]]*rel
ifeq ($(efi-nr-fixups),2)
MKRELOC := :
else
-MKRELOC := efi/mkreloc
+MKRELOC := arch/x86/efi/mkreloc
# If the linker produced fixups but not precisely two of them, we need to
# disable it doing so. But if it didn't produce any fixups, it also wouldn't
# recognize the option.
@@ -115,6 +115,6 @@ export EFI_LDFLAGS
endif
# Set up the assembler include path properly for older toolchains.
-CFLAGS += -Wa,-I$(BASEDIR)/include
+CFLAGS += -Wa,-I$(srctree)/include
ALL_OBJS-y := arch/x86/boot/built_in.o arch/x86/efi/built_in.o $(ALL_OBJS-y)
diff --git a/xen/arch/x86/boot/Makefile b/xen/arch/x86/boot/Makefile
index 0aec8a4643..ba732e4a88 100644
--- a/xen/arch/x86/boot/Makefile
+++ b/xen/arch/x86/boot/Makefile
@@ -1,8 +1,8 @@
obj-bin-y += head.o
-DEFS_H_DEPS = $(src)/defs.h $(BASEDIR)/include/xen/stdbool.h
+DEFS_H_DEPS = $(abs_srctree)/$(src)/defs.h $(abs_srctree)/include/xen/stdbool.h
-CMDLINE_DEPS = $(DEFS_H_DEPS) $(src)/video.h \
+CMDLINE_DEPS = $(DEFS_H_DEPS) $(abs_srctree)/$(src)/video.h \
$(BASEDIR)/include/xen/kconfig.h \
$(BASEDIR)/include/generated/autoconf.h
@@ -17,7 +17,7 @@ RELOC_DEPS = $(DEFS_H_DEPS) \
$(obj)/head.o: $(obj)/cmdline.S $(obj)/reloc.S
$(obj)/cmdline.S: $(src)/cmdline.c $(CMDLINE_DEPS) $(src)/build32.lds
- $(MAKE) -f build32.mk -C $(obj) $(@F) CMDLINE_DEPS="$(CMDLINE_DEPS)"
+ $(MAKE) -f $(abs_srctree)/$(src)/build32.mk -C $(obj) $(@F)
CMDLINE_DEPS="$(CMDLINE_DEPS)"
$(obj)/reloc.S: $(src)/reloc.c $(RELOC_DEPS) $(src)/build32.lds
- $(MAKE) -f build32.mk -C $(obj) $(@F) RELOC_DEPS="$(RELOC_DEPS)"
+ $(MAKE) -f $(abs_srctree)/$(src)/build32.mk -C $(obj) $(@F)
RELOC_DEPS="$(RELOC_DEPS)"
diff --git a/xen/build.mk b/xen/build.mk
index af1b283113..487db14c58 100644
--- a/xen/build.mk
+++ b/xen/build.mk
@@ -60,6 +60,16 @@ arch/$(TARGET_ARCH)/include/asm/asm-offsets.h: asm-offsets.s
echo ""; \
echo "#endif") <$< >$@
+build-dirs := $(patsubst %/built_in.o,%,$(filter %/built_in.o,$(ALL_OBJS)
$(ALL_LIBS)))
+
+# The actual objects are generated when descending,
+# make sure no implicit rule kicks in
+$(sort $(ALL_OBJS) $(ALL_LIBS)): $(build-dirs) ;
+
+PHONY += $(build-dirs)
+$(build-dirs): FORCE
+ $(Q)$(MAKE) $(build)=$@ need-builtin=1
+
ifeq ($(CONFIG_LTO),y)
# Gather all LTO objects together
prelink_lto.o: $(ALL_OBJS) $(ALL_LIBS)
@@ -76,4 +86,4 @@ endif
targets += prelink.o
$(TARGET): prelink.o FORCE
- $(MAKE) -f $(BASEDIR)/Rules.mk -C arch/$(TARGET_ARCH) $@
+ $(Q)$(MAKE) $(build)=arch/$(TARGET_ARCH) $@
diff --git a/xen/include/Makefile b/xen/include/Makefile
index d2f5a956a1..cd40d5b4c9 100644
--- a/xen/include/Makefile
+++ b/xen/include/Makefile
@@ -61,7 +61,7 @@ $(obj)/compat/.xlat/%.h: $(obj)/compat/%.h
$(obj)/compat/.xlat/%.lst $(BASEDIR)/
export PYTHON=$(PYTHON); \
while read what name; do \
$(SHELL) $(BASEDIR)/tools/get-fields.sh "$$what" compat_$$name
$< || exit $$?; \
- done <$(patsubst compat/%,compat/.xlat/%,$(basename $<)).lst >$@.new
+ done <$(patsubst $(obj)/compat/%,$(obj)/compat/.xlat/%,$(basename
$<)).lst >$@.new
mv -f $@.new $@
.PRECIOUS: $(obj)/compat/.xlat/%.lst
@@ -86,8 +86,8 @@ PUBLIC_HEADERS := $(filter-out $(src)/public/arch-%
$(src)/public/dom0_ops.h, $(
PUBLIC_C99_HEADERS := $(src)/public/io/9pfs.h $(src)/public/io/pvcalls.h
PUBLIC_ANSI_HEADERS := $(filter-out $(src)/public/%ctl.h $(src)/public/xsm/%
$(src)/public/%hvm/save.h $(PUBLIC_C99_HEADERS), $(PUBLIC_HEADERS))
-public/io/9pfs.h-prereq := string
-public/io/pvcalls.h-prereq := string
+$(src)/public/io/9pfs.h-prereq := string
+$(src)/public/io/pvcalls.h-prereq := string
$(obj)/headers.chk: $(PUBLIC_ANSI_HEADERS) $(src)/Makefile
for i in $(filter %.h,$^); do \
diff --git a/xen/scripts/Kbuild.include b/xen/scripts/Kbuild.include
index 4875bb28c2..c159136adb 100644
--- a/xen/scripts/Kbuild.include
+++ b/xen/scripts/Kbuild.include
@@ -61,6 +61,12 @@ cc-ifversion = $(shell [ $(CONFIG_GCC_VERSION)0 $(1) $(2)000
] && echo $(3) || e
clang-ifversion = $(shell [ $(CONFIG_CLANG_VERSION)0 $(1) $(2)000 ] && echo
$(3) || echo $(4))
+###
+# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.build obj=
+# Usage:
+# $(Q)$(MAKE) $(build)=dir
+build := -f $(srctree)/Rules.mk obj
+
# Shorthand for $(MAKE) clean
# Usage:
# $(MAKE) $(clean) dir
diff --git a/xen/test/Makefile b/xen/test/Makefile
index 41e4d7bdb7..080763c807 100644
--- a/xen/test/Makefile
+++ b/xen/test/Makefile
@@ -1,13 +1,10 @@
-tests all: build
-
-
ifneq ($(XEN_TARGET_ARCH),x86_32)
# Xen 32-bit x86 hypervisor no longer supported, so has no test livepatches
subdir-y += livepatch
endif
-install build subtree-force-update uninstall: %:
+install uninstall: %:
set -e; for s in $(subdir-y); do \
- $(MAKE) -f $(BASEDIR)/Rules.mk -C $$s $*; \
+ $(MAKE) $(build)=$$s $*; \
done
diff --git a/xen/test/livepatch/Makefile b/xen/test/livepatch/Makefile
index 69fadccd01..afb8d589ec 100644
--- a/xen/test/livepatch/Makefile
+++ b/xen/test/livepatch/Makefile
@@ -11,9 +11,6 @@ endif
CODE_ADDR=$(shell nm --defined $(1) | grep $(2) | awk '{print "0x"$$1}')
CODE_SZ=$(shell nm --defined -S $(1) | grep $(2) | awk '{ print "0x"$$2}')
-.PHONY: default
-build default: livepatch
-
extra-y += xen_hello_world.livepatch
xen_hello_world-objs := xen_hello_world_func.o xen_hello_world.o note.o
xen_note.o modinfo.o
$(obj)/xen_hello_world.o: $(obj)/config.h
@@ -156,9 +153,6 @@ LIVEPATCHES := $(filter %.livepatch,$(extra-y))
LIVEPATCH_DEBUG_DIR ?= $(DEBUG_DIR)/xen-livepatch
-.PHONY: livepatch
-livepatch: $(LIVEPATCHES)
-
install: $(addprefix $(obj)/,$(LIVEPATCHES))
$(INSTALL_DIR) $(DESTDIR)$(LIVEPATCH_DEBUG_DIR)
$(INSTALL_DATA) $(addprefix $(obj)/,$(LIVEPATCHES))
$(DESTDIR)$(LIVEPATCH_DEBUG_DIR)
diff --git a/xen/xsm/flask/Makefile b/xen/xsm/flask/Makefile
index 51fd37f6c4..49cf730cf0 100644
--- a/xen/xsm/flask/Makefile
+++ b/xen/xsm/flask/Makefile
@@ -40,7 +40,7 @@ $(obj)/flask-policy.S: $(BASEDIR)/tools/binfile FORCE
$(call if_changed,binfile,$(obj)/policy.bin xsm_flask_init_policy)
targets += flask-policy.S
-FLASK_BUILD_DIR := $(CURDIR)
+FLASK_BUILD_DIR := $(abs_objtree)/$(obj)
POLICY_SRC := $(FLASK_BUILD_DIR)/xenpolicy-$(XEN_FULLVERSION)
$(obj)/policy.bin: FORCE
diff --git a/xen/xsm/flask/ss/Makefile b/xen/xsm/flask/ss/Makefile
index d32b9e0713..aba1339f38 100644
--- a/xen/xsm/flask/ss/Makefile
+++ b/xen/xsm/flask/ss/Makefile
@@ -8,4 +8,4 @@ obj-y += services.o
obj-y += conditional.o
obj-y += mls.o
-CFLAGS-y += -I../include
+CFLAGS-y += -I$(srctree)/xsm/flask/include
--
generated by git-patchbot for /home/xen/git/xen.git#staging
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