kernel/Makefile

#
# Makefile for the linux kernel.
#

obj-y     = sched.o fork.o exec_domain.o panic.o printk.o profile.o \
	    exit.o itimer.o time.o softirq.o resource.o \
	    sysctl.o capability.o ptrace.o timer.o user.o \
	    signal.o sys.o kmod.o workqueue.o pid.o \
	    rcupdate.o intermodule.o extable.o params.o posix-timers.o

obj-$(CONFIG_FUTEX) += futex.o
obj-$(CONFIG_GENERIC_ISA_DMA) += dma.o
obj-$(CONFIG_SMP) += cpu.o
obj-$(CONFIG_UID16) += uid16.o
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_KALLSYMS) += kallsyms.o
obj-$(CONFIG_PM) += power/
obj-$(CONFIG_BSD_PROCESS_ACCT) += acct.o
obj-$(CONFIG_COMPAT) += compat.o
obj-$(CONFIG_IKCONFIG) += configs.o
obj-$(CONFIG_IKCONFIG_PROC) += configs.o

ifneq ($(CONFIG_IA64),y)
# According to Alan Modra <alan@linuxcare.com.au>, the -fno-omit-frame-pointer is
# needed for x86 only.  Why this used to be enabled for all architectures is beyond
# me.  I suspect most platforms don't need this, but until we know that for sure
# I turn this off for IA-64 only.  Andreas Schwab says it's also needed on m68k
# to get a correct value for the wait-channel (WCHAN in ps). --davidm
CFLAGS_sched.o := $(PROFILING) -fno-omit-frame-pointer
endif

# configs.o uses generated files - dependecies must be listed explicitly
$(obj)/configs.o: $(obj)/ikconfig.h

ifdef CONFIG_IKCONFIG_PROC
$(obj)/configs.o: $(obj)/config_data.h
endif

# ikconfig.h contains all the selected config entries - generated
# from top-level Makefile and .config. Info from ikconfig.h can
# be extracted from the kernel binary.

quiet_cmd_ikconfig = IKCFG   $@
      cmd_ikconfig = $(CONFIG_SHELL) $< .config $(srctree)/Makefile > $@

targets += ikconfig.h
$(obj)/ikconfig.h: scripts/mkconfigs .config Makefile FORCE
	$(call if_changed,ikconfig)

# config_data.h contains the same information as ikconfig.h but gzipped.
# Info from config_data can be extracted from /proc/config*
targets += config_data.gz
$(obj)/config_data.gz: .config FORCE
	$(call if_changed,gzip)

quiet_cmd_ikconfiggz = IKCFG   $@
      cmd_ikconfiggz = cat $< | scripts/bin2c kernel_config_data > $@
targets += config_data.h
$(obj)/config_data.h: $(obj)/config_data.gz FORCE
	$(call if_changed,ikconfiggz)