$(ARCH_DIR)/sys-$(SUBARCH)/
# Have to precede the include because the included Makefiles reference them.
-SYMLINK_HEADERS = include/asm-um/archparam.h include/asm-um/system.h \
- include/asm-um/sigcontext.h include/asm-um/processor.h \
- include/asm-um/ptrace.h include/asm-um/arch-signal.h
+SYMLINK_HEADERS = archparam.h system.h sigcontext.h processor.h ptrace.h \
+ arch-signal.h module.h
+SYMLINK_HEADERS := $(foreach header,$(SYMLINK_HEADERS),include/asm-um/$(header))
ARCH_SYMLINKS = include/asm-um/arch $(ARCH_DIR)/include/sysdep $(ARCH_DIR)/os \
$(SYMLINK_HEADERS) $(ARCH_DIR)/include/uml-config.h
GEN_HEADERS += $(ARCH_DIR)/include/task.h $(ARCH_DIR)/include/kern_constants.h
-include $(ARCH_DIR)/Makefile-$(SUBARCH)
-include $(ARCH_DIR)/Makefile-os-$(OS)
+# This target adds dependencies to "prepare". They are defined in the included
+# Makefiles (see Makefile-i386).
+
+.PHONY: sys_prepare
+sys_prepare:
+ @:
MAKEFILE-$(CONFIG_MODE_TT) += Makefile-tt
MAKEFILE-$(CONFIG_MODE_SKAS) += Makefile-skas
include $(addprefix $(ARCH_DIR)/,$(MAKEFILE-y))
endif
+include $(ARCH_DIR)/Makefile-$(SUBARCH)
+include $(ARCH_DIR)/Makefile-os-$(OS)
+
EXTRAVERSION := $(EXTRAVERSION)-1um
ARCH_INCLUDE = -I$(ARCH_DIR)/include
CFLAGS += $(CFLAGS-y) -D__arch_um__ -DSUBARCH=\"$(SUBARCH)\" \
-D_LARGEFILE64_SOURCE $(ARCH_INCLUDE) -Derrno=kernel_errno \
- $(MODE_INCLUDE)
+ -Dsigprocmask=kernel_sigprocmask $(MODE_INCLUDE)
+
+check_gcc = $(shell if $(CC) $(1) -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi)
+
+CFLAGS += $(call check_gcc,-fno-unit-at-a-time,)
LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
+# These are needed for clean and mrproper, since in that case .config is not
+# included; the values here are meaningless
+
+CONFIG_NEST_LEVEL ?= 0
+CONFIG_KERNEL_HALF_GIGS ?= 0
+
SIZE = (($(CONFIG_NEST_LEVEL) + $(CONFIG_KERNEL_HALF_GIGS)) * 0x20000000)
ifeq ($(CONFIG_MODE_SKAS), y)
-$(SYS_HEADERS) : $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h
+$(SYS_HEADERS) : $(TOPDIR)/$(ARCH_DIR)/include/skas_ptregs.h
endif
include/linux/version.h: arch/$(ARCH)/Makefile
CONFIG_KERNEL_STACK_ORDER ?= 2
STACK_SIZE := $(shell echo $$[ 4096 * (1 << $(CONFIG_KERNEL_STACK_ORDER)) ] )
-AFLAGS_vmlinux.lds.o = -U$(SUBARCH) \
- -DSTART=$$(($(TOP_ADDR) - $(SIZE))) -DELF_ARCH=$(ELF_ARCH) \
+ifndef START
+ START = $$(($(TOP_ADDR) - $(SIZE)))
+endif
+
+AFLAGS_vmlinux.lds.o = $(shell echo -U$(SUBARCH) \
+ -DSTART=$(START) -DELF_ARCH=$(ELF_ARCH) \
-DELF_FORMAT=\"$(ELF_FORMAT)\" $(CPP_MODE_TT) \
- -DKERNEL_STACK_SIZE=$(STACK_SIZE)
+ -DKERNEL_STACK_SIZE=$(STACK_SIZE))
-AFLAGS_$(LD_SCRIPT-y:.s=).o = $(AFLAGS_vmlinux.lds.o) -P -C -Uum
+export AFLAGS_$(LD_SCRIPT-y:.s=).o = $(AFLAGS_vmlinux.lds.o) -P -C -Uum
LD_SCRIPT-y := $(ARCH_DIR)/$(LD_SCRIPT-y)
-$(LD_SCRIPT-y) : $(LD_SCRIPT-y:.s=.S) scripts FORCE
- $(call if_changed_dep,as_s_S)
+#$(LD_SCRIPT-y) : $(LD_SCRIPT-y:.s=.S) scripts FORCE
+# $(call if_changed_dep,as_s_S)
linux: vmlinux $(LD_SCRIPT-y)
$(CC) -Wl,-T,$(LD_SCRIPT-y) $(LINK-y) $(LINK_WRAPS) \
USER_CFLAGS := $(patsubst -I%,,$(CFLAGS))
USER_CFLAGS := $(patsubst -Derrno=kernel_errno,,$(USER_CFLAGS))
+USER_CFLAGS := $(patsubst -Dsigprocmask=kernel_sigprocmask,,$(USER_CFLAGS))
USER_CFLAGS := $(patsubst -D__KERNEL__,,$(USER_CFLAGS)) $(ARCH_INCLUDE) \
$(MODE_INCLUDE)
# To get a definition of F_SETSIG
USER_CFLAGS += -D_GNU_SOURCE
+# From main Makefile, these options are set after including the ARCH makefile.
+# So copy them here.
+
+ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
+USER_CFLAGS += -Os
+else
+USER_CFLAGS += -O2
+endif
+
+ifndef CONFIG_FRAME_POINTER
+USER_CFLAGS += -fomit-frame-pointer
+endif
+
+ifdef CONFIG_DEBUG_INFO
+USER_CFLAGS += -g
+endif
+
CLEAN_FILES += linux x.i gmon.out $(ARCH_DIR)/uml.lds.s \
- $(ARCH_DIR)/dyn_link.ld.s $(GEN_HEADERS)
+ $(ARCH_DIR)/dyn_link.ld.s $(ARCH_DIR)/include/uml-config.h \
+ $(GEN_HEADERS)
-$(ARCH_DIR)/main.o: $(ARCH_DIR)/main.c
- $(CC) $(USER_CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $<
+MRPROPER_FILES += $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) \
+ $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS))
+
+$(ARCH_DIR)/main.o: $(ARCH_DIR)/main.c sys_prepare
+ @ echo ' MAIN $@'
+ @ $(CC) $(USER_CFLAGS) $(EXTRA_CFLAGS) -c -o $@ $<
archmrproper:
- for d in $(ARCH_SUBDIRS) $(ARCH_DIR)/util; \
- do \
- $(MAKE) -C $$d archmrproper; \
- done
- rm -f $(CLEAN_FILES) $(SYMLINK_HEADERS) $(ARCH_SYMLINKS) include/asm \
- $(addprefix $(ARCH_DIR)/kernel/,$(KERN_SYMLINKS))
-
-archclean: sysclean
- for d in $(ARCH_SUBDIRS) $(ARCH_DIR)/util; \
- do \
- $(MAKE) -C $$d clean; \
- done
- find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
- -o -name '*.gcov' \) -type f -print | xargs rm -f
- rm -f linux x.i gmon.out $(ARCH_DIR)/link.ld $(GEN_HEADERS)
+ @:
-archdep:
- for d in $(ARCH_SUBDIRS); do $(MAKE) -C $$d fastdep; done
+archclean:
+ @find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
+ -o -name '*.gcov' \) -type f -print | xargs rm -f
$(SYMLINK_HEADERS):
cd $(TOPDIR)/$(dir $@) ; \
$(ARCH_DIR)/os:
cd $(ARCH_DIR) && ln -sf os-$(OS) os
-$(ARCH_DIR)/include/uml-config.h :
- sed 's/ CONFIG/ UML_CONFIG/' $(TOPDIR)/include/linux/autoconf.h > $@
+# Generated files
+define filechk_umlconfig
+ sed 's/ CONFIG/ UML_CONFIG/'
+endef
+
+$(ARCH_DIR)/include/uml-config.h : $(TOPDIR)/include/linux/autoconf.h
+ $(call filechk,umlconfig)
+
+filechk_gen_header = $<
$(ARCH_DIR)/include/task.h : $(ARCH_DIR)/util/mk_task
- $< > $@
+ $(call filechk,gen_header)
$(ARCH_DIR)/include/kern_constants.h : $(ARCH_DIR)/util/mk_constants
- $< > $@
+ $(call filechk,gen_header)
-$(ARCH_DIR)/util/mk_task : $(ARCH_DIR)/kernel/skas/include/skas_ptregs.h \
- $(ARCH_DIR)/util FORCE ;
+$(ARCH_DIR)/util/mk_task $(ARCH_DIR)/util/mk_constants : $(ARCH_DIR)/util \
+ sys_prepare FORCE ;
$(ARCH_DIR)/util: FORCE
- @$(call descend,$@,)
+ $(Q)$(MAKE) $(build)=$@
+
+export SUBARCH USER_CFLAGS OS
+
+all: linux
-export SUBARCH USER_CFLAGS OS
+define archhelp
+ echo '* linux - Binary kernel image (./linux)'
+endef
git://git.onelab.eu / linux-2.6.git / blobdiff