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1461 lines
48 KiB
1461 lines
48 KiB
VERSION = 3 |
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PATCHLEVEL = 13 |
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SUBLEVEL = 0 |
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EXTRAVERSION = -rc8 |
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NAME = One Giant Leap for Frogkind |
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|
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# *DOCUMENTATION* |
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# To see a list of typical targets execute "make help" |
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# More info can be located in ./README |
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# Comments in this file are targeted only to the developer, do not |
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# expect to learn how to build the kernel reading this file. |
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|
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# Do not: |
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# o use make's built-in rules and variables |
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# (this increases performance and avoids hard-to-debug behaviour); |
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# o print "Entering directory ..."; |
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MAKEFLAGS += -rR --no-print-directory |
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|
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# Avoid funny character set dependencies |
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unexport LC_ALL |
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LC_COLLATE=C |
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LC_NUMERIC=C |
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export LC_COLLATE LC_NUMERIC |
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|
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# Avoid interference with shell env settings |
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unexport GREP_OPTIONS |
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|
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# We are using a recursive build, so we need to do a little thinking |
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# to get the ordering right. |
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# |
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# Most importantly: sub-Makefiles should only ever modify files in |
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# their own directory. If in some directory we have a dependency on |
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# a file in another dir (which doesn't happen often, but it's often |
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# unavoidable when linking the built-in.o targets which finally |
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# turn into vmlinux), we will call a sub make in that other dir, and |
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# after that we are sure that everything which is in that other dir |
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# is now up to date. |
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# |
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# The only cases where we need to modify files which have global |
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# effects are thus separated out and done before the recursive |
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# descending is started. They are now explicitly listed as the |
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# prepare rule. |
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|
|
# To put more focus on warnings, be less verbose as default |
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# Use 'make V=1' to see the full commands |
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|
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ifeq ("$(origin V)", "command line") |
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KBUILD_VERBOSE = $(V) |
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endif |
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ifndef KBUILD_VERBOSE |
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KBUILD_VERBOSE = 0 |
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endif |
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|
|
# Call a source code checker (by default, "sparse") as part of the |
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# C compilation. |
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# |
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# Use 'make C=1' to enable checking of only re-compiled files. |
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# Use 'make C=2' to enable checking of *all* source files, regardless |
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# of whether they are re-compiled or not. |
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# |
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# See the file "Documentation/sparse.txt" for more details, including |
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# where to get the "sparse" utility. |
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|
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ifeq ("$(origin C)", "command line") |
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KBUILD_CHECKSRC = $(C) |
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endif |
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ifndef KBUILD_CHECKSRC |
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KBUILD_CHECKSRC = 0 |
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endif |
|
|
|
# Use make M=dir to specify directory of external module to build |
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# Old syntax make ... SUBDIRS=$PWD is still supported |
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# Setting the environment variable KBUILD_EXTMOD take precedence |
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ifdef SUBDIRS |
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KBUILD_EXTMOD ?= $(SUBDIRS) |
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endif |
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|
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ifeq ("$(origin M)", "command line") |
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KBUILD_EXTMOD := $(M) |
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endif |
|
|
|
# kbuild supports saving output files in a separate directory. |
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# To locate output files in a separate directory two syntaxes are supported. |
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# In both cases the working directory must be the root of the kernel src. |
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# 1) O= |
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# Use "make O=dir/to/store/output/files/" |
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# |
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# 2) Set KBUILD_OUTPUT |
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# Set the environment variable KBUILD_OUTPUT to point to the directory |
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# where the output files shall be placed. |
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# export KBUILD_OUTPUT=dir/to/store/output/files/ |
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# make |
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# |
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# The O= assignment takes precedence over the KBUILD_OUTPUT environment |
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# variable. |
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|
|
|
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# KBUILD_SRC is set on invocation of make in OBJ directory |
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# KBUILD_SRC is not intended to be used by the regular user (for now) |
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ifeq ($(KBUILD_SRC),) |
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|
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# OK, Make called in directory where kernel src resides |
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# Do we want to locate output files in a separate directory? |
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ifeq ("$(origin O)", "command line") |
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KBUILD_OUTPUT := $(O) |
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endif |
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|
|
ifeq ("$(origin W)", "command line") |
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export KBUILD_ENABLE_EXTRA_GCC_CHECKS := $(W) |
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endif |
|
|
|
# That's our default target when none is given on the command line |
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PHONY := _all |
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_all: |
|
|
|
# Cancel implicit rules on top Makefile |
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$(CURDIR)/Makefile Makefile: ; |
|
|
|
ifneq ($(KBUILD_OUTPUT),) |
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# Invoke a second make in the output directory, passing relevant variables |
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# check that the output directory actually exists |
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saved-output := $(KBUILD_OUTPUT) |
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KBUILD_OUTPUT := $(shell cd $(KBUILD_OUTPUT) && /bin/pwd) |
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$(if $(KBUILD_OUTPUT),, \ |
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$(error output directory "$(saved-output)" does not exist)) |
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|
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PHONY += $(MAKECMDGOALS) sub-make |
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|
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$(filter-out _all sub-make $(CURDIR)/Makefile, $(MAKECMDGOALS)) _all: sub-make |
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@: |
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|
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sub-make: FORCE |
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$(if $(KBUILD_VERBOSE:1=),@)$(MAKE) -C $(KBUILD_OUTPUT) \ |
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KBUILD_SRC=$(CURDIR) \ |
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KBUILD_EXTMOD="$(KBUILD_EXTMOD)" -f $(CURDIR)/Makefile \ |
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$(filter-out _all sub-make,$(MAKECMDGOALS)) |
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|
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# Leave processing to above invocation of make |
|
skip-makefile := 1 |
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endif # ifneq ($(KBUILD_OUTPUT),) |
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endif # ifeq ($(KBUILD_SRC),) |
|
|
|
# We process the rest of the Makefile if this is the final invocation of make |
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ifeq ($(skip-makefile),) |
|
|
|
# If building an external module we do not care about the all: rule |
|
# but instead _all depend on modules |
|
PHONY += all |
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ifeq ($(KBUILD_EXTMOD),) |
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_all: all |
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else |
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_all: modules |
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endif |
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|
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srctree := $(if $(KBUILD_SRC),$(KBUILD_SRC),$(CURDIR)) |
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objtree := $(CURDIR) |
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src := $(srctree) |
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obj := $(objtree) |
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|
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VPATH := $(srctree)$(if $(KBUILD_EXTMOD),:$(KBUILD_EXTMOD)) |
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|
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export srctree objtree VPATH |
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|
|
|
|
# SUBARCH tells the usermode build what the underlying arch is. That is set |
|
# first, and if a usermode build is happening, the "ARCH=um" on the command |
|
# line overrides the setting of ARCH below. If a native build is happening, |
|
# then ARCH is assigned, getting whatever value it gets normally, and |
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# SUBARCH is subsequently ignored. |
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SUBARCH := $(shell uname -m | sed -e s/i.86/x86/ -e s/x86_64/x86/ \ |
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-e s/sun4u/sparc64/ \ |
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-e s/arm.*/arm/ -e s/sa110/arm/ \ |
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-e s/s390x/s390/ -e s/parisc64/parisc/ \ |
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-e s/ppc.*/powerpc/ -e s/mips.*/mips/ \ |
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-e s/sh[234].*/sh/ -e s/aarch64.*/arm64/ ) |
|
|
|
# Cross compiling and selecting different set of gcc/bin-utils |
|
# --------------------------------------------------------------------------- |
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# |
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# When performing cross compilation for other architectures ARCH shall be set |
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# to the target architecture. (See arch/* for the possibilities). |
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# ARCH can be set during invocation of make: |
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# make ARCH=ia64 |
|
# Another way is to have ARCH set in the environment. |
|
# The default ARCH is the host where make is executed. |
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|
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# CROSS_COMPILE specify the prefix used for all executables used |
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# during compilation. Only gcc and related bin-utils executables |
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# are prefixed with $(CROSS_COMPILE). |
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# CROSS_COMPILE can be set on the command line |
|
# make CROSS_COMPILE=ia64-linux- |
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# Alternatively CROSS_COMPILE can be set in the environment. |
|
# A third alternative is to store a setting in .config so that plain |
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# "make" in the configured kernel build directory always uses that. |
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# Default value for CROSS_COMPILE is not to prefix executables |
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# Note: Some architectures assign CROSS_COMPILE in their arch/*/Makefile |
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ARCH ?= $(SUBARCH) |
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CROSS_COMPILE ?= $(CONFIG_CROSS_COMPILE:"%"=%) |
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|
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# Architecture as present in compile.h |
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UTS_MACHINE := $(ARCH) |
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SRCARCH := $(ARCH) |
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|
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# Additional ARCH settings for x86 |
|
ifeq ($(ARCH),i386) |
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SRCARCH := x86 |
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endif |
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ifeq ($(ARCH),x86_64) |
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SRCARCH := x86 |
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endif |
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|
|
# Additional ARCH settings for sparc |
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ifeq ($(ARCH),sparc32) |
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SRCARCH := sparc |
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endif |
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ifeq ($(ARCH),sparc64) |
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SRCARCH := sparc |
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endif |
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|
|
# Additional ARCH settings for sh |
|
ifeq ($(ARCH),sh64) |
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SRCARCH := sh |
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endif |
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|
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# Additional ARCH settings for tile |
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ifeq ($(ARCH),tilepro) |
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SRCARCH := tile |
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endif |
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ifeq ($(ARCH),tilegx) |
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SRCARCH := tile |
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endif |
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|
|
# Where to locate arch specific headers |
|
hdr-arch := $(SRCARCH) |
|
|
|
KCONFIG_CONFIG ?= .config |
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export KCONFIG_CONFIG |
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|
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# SHELL used by kbuild |
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CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \ |
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else if [ -x /bin/bash ]; then echo /bin/bash; \ |
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else echo sh; fi ; fi) |
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|
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HOSTCC = gcc |
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HOSTCXX = g++ |
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HOSTCFLAGS = -Wall -Wmissing-prototypes -Wstrict-prototypes -O2 -fomit-frame-pointer |
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HOSTCXXFLAGS = -O2 |
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|
|
# Decide whether to build built-in, modular, or both. |
|
# Normally, just do built-in. |
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|
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KBUILD_MODULES := |
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KBUILD_BUILTIN := 1 |
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|
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# If we have only "make modules", don't compile built-in objects. |
|
# When we're building modules with modversions, we need to consider |
|
# the built-in objects during the descend as well, in order to |
|
# make sure the checksums are up to date before we record them. |
|
|
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ifeq ($(MAKECMDGOALS),modules) |
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KBUILD_BUILTIN := $(if $(CONFIG_MODVERSIONS),1) |
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endif |
|
|
|
# If we have "make <whatever> modules", compile modules |
|
# in addition to whatever we do anyway. |
|
# Just "make" or "make all" shall build modules as well |
|
|
|
ifneq ($(filter all _all modules,$(MAKECMDGOALS)),) |
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KBUILD_MODULES := 1 |
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endif |
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|
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ifeq ($(MAKECMDGOALS),) |
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KBUILD_MODULES := 1 |
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endif |
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|
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export KBUILD_MODULES KBUILD_BUILTIN |
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export KBUILD_CHECKSRC KBUILD_SRC KBUILD_EXTMOD |
|
|
|
# Beautify output |
|
# --------------------------------------------------------------------------- |
|
# |
|
# Normally, we echo the whole command before executing it. By making |
|
# that echo $($(quiet)$(cmd)), we now have the possibility to set |
|
# $(quiet) to choose other forms of output instead, e.g. |
|
# |
|
# quiet_cmd_cc_o_c = Compiling $(RELDIR)/$@ |
|
# cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< |
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# |
|
# If $(quiet) is empty, the whole command will be printed. |
|
# If it is set to "quiet_", only the short version will be printed. |
|
# If it is set to "silent_", nothing will be printed at all, since |
|
# the variable $(silent_cmd_cc_o_c) doesn't exist. |
|
# |
|
# A simple variant is to prefix commands with $(Q) - that's useful |
|
# for commands that shall be hidden in non-verbose mode. |
|
# |
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# $(Q)ln $@ :< |
|
# |
|
# If KBUILD_VERBOSE equals 0 then the above command will be hidden. |
|
# If KBUILD_VERBOSE equals 1 then the above command is displayed. |
|
|
|
ifeq ($(KBUILD_VERBOSE),1) |
|
quiet = |
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Q = |
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else |
|
quiet=quiet_ |
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Q = @ |
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endif |
|
|
|
# If the user is running make -s (silent mode), suppress echoing of |
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# commands |
|
|
|
ifneq ($(filter s% -s%,$(MAKEFLAGS)),) |
|
quiet=silent_ |
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endif |
|
|
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export quiet Q KBUILD_VERBOSE |
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|
|
|
|
# Look for make include files relative to root of kernel src |
|
MAKEFLAGS += --include-dir=$(srctree) |
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|
|
# We need some generic definitions (do not try to remake the file). |
|
$(srctree)/scripts/Kbuild.include: ; |
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include $(srctree)/scripts/Kbuild.include |
|
|
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# Make variables (CC, etc...) |
|
|
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AS = $(CROSS_COMPILE)as |
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LD = $(CROSS_COMPILE)ld |
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CC = $(CROSS_COMPILE)gcc |
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CPP = $(CC) -E |
|
AR = $(CROSS_COMPILE)ar |
|
NM = $(CROSS_COMPILE)nm |
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STRIP = $(CROSS_COMPILE)strip |
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OBJCOPY = $(CROSS_COMPILE)objcopy |
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OBJDUMP = $(CROSS_COMPILE)objdump |
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AWK = awk |
|
GENKSYMS = scripts/genksyms/genksyms |
|
INSTALLKERNEL := installkernel |
|
DEPMOD = /sbin/depmod |
|
PERL = perl |
|
CHECK = sparse |
|
|
|
CHECKFLAGS := -D__linux__ -Dlinux -D__STDC__ -Dunix -D__unix__ \ |
|
-Wbitwise -Wno-return-void $(CF) |
|
CFLAGS_MODULE = |
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AFLAGS_MODULE = |
|
LDFLAGS_MODULE = |
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CFLAGS_KERNEL = |
|
AFLAGS_KERNEL = |
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CFLAGS_GCOV = -fprofile-arcs -ftest-coverage |
|
|
|
|
|
# Use USERINCLUDE when you must reference the UAPI directories only. |
|
USERINCLUDE := \ |
|
-I$(srctree)/arch/$(hdr-arch)/include/uapi \ |
|
-Iarch/$(hdr-arch)/include/generated/uapi \ |
|
-I$(srctree)/include/uapi \ |
|
-Iinclude/generated/uapi \ |
|
-include $(srctree)/include/linux/kconfig.h |
|
|
|
# Use LINUXINCLUDE when you must reference the include/ directory. |
|
# Needed to be compatible with the O= option |
|
LINUXINCLUDE := \ |
|
-I$(srctree)/arch/$(hdr-arch)/include \ |
|
-Iarch/$(hdr-arch)/include/generated \ |
|
$(if $(KBUILD_SRC), -I$(srctree)/include) \ |
|
-Iinclude \ |
|
$(USERINCLUDE) |
|
|
|
KBUILD_CPPFLAGS := -D__KERNEL__ |
|
|
|
KBUILD_CFLAGS := -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs \ |
|
-fno-strict-aliasing -fno-common \ |
|
-Werror-implicit-function-declaration \ |
|
-Wno-format-security \ |
|
-fno-delete-null-pointer-checks |
|
KBUILD_AFLAGS_KERNEL := |
|
KBUILD_CFLAGS_KERNEL := |
|
KBUILD_AFLAGS := -D__ASSEMBLY__ |
|
KBUILD_AFLAGS_MODULE := -DMODULE |
|
KBUILD_CFLAGS_MODULE := -DMODULE |
|
KBUILD_LDFLAGS_MODULE := -T $(srctree)/scripts/module-common.lds |
|
|
|
# Read KERNELRELEASE from include/config/kernel.release (if it exists) |
|
KERNELRELEASE = $(shell cat include/config/kernel.release 2> /dev/null) |
|
KERNELVERSION = $(VERSION)$(if $(PATCHLEVEL),.$(PATCHLEVEL)$(if $(SUBLEVEL),.$(SUBLEVEL)))$(EXTRAVERSION) |
|
|
|
export VERSION PATCHLEVEL SUBLEVEL KERNELRELEASE KERNELVERSION |
|
export ARCH SRCARCH CONFIG_SHELL HOSTCC HOSTCFLAGS CROSS_COMPILE AS LD CC |
|
export CPP AR NM STRIP OBJCOPY OBJDUMP |
|
export MAKE AWK GENKSYMS INSTALLKERNEL PERL UTS_MACHINE |
|
export HOSTCXX HOSTCXXFLAGS LDFLAGS_MODULE CHECK CHECKFLAGS |
|
|
|
export KBUILD_CPPFLAGS NOSTDINC_FLAGS LINUXINCLUDE OBJCOPYFLAGS LDFLAGS |
|
export KBUILD_CFLAGS CFLAGS_KERNEL CFLAGS_MODULE CFLAGS_GCOV |
|
export KBUILD_AFLAGS AFLAGS_KERNEL AFLAGS_MODULE |
|
export KBUILD_AFLAGS_MODULE KBUILD_CFLAGS_MODULE KBUILD_LDFLAGS_MODULE |
|
export KBUILD_AFLAGS_KERNEL KBUILD_CFLAGS_KERNEL |
|
export KBUILD_ARFLAGS |
|
|
|
# When compiling out-of-tree modules, put MODVERDIR in the module |
|
# tree rather than in the kernel tree. The kernel tree might |
|
# even be read-only. |
|
export MODVERDIR := $(if $(KBUILD_EXTMOD),$(firstword $(KBUILD_EXTMOD))/).tmp_versions |
|
|
|
# Files to ignore in find ... statements |
|
|
|
RCS_FIND_IGNORE := \( -name SCCS -o -name BitKeeper -o -name .svn -o -name CVS \ |
|
-o -name .pc -o -name .hg -o -name .git \) -prune -o |
|
export RCS_TAR_IGNORE := --exclude SCCS --exclude BitKeeper --exclude .svn \ |
|
--exclude CVS --exclude .pc --exclude .hg --exclude .git |
|
|
|
# =========================================================================== |
|
# Rules shared between *config targets and build targets |
|
|
|
# Basic helpers built in scripts/ |
|
PHONY += scripts_basic |
|
scripts_basic: |
|
$(Q)$(MAKE) $(build)=scripts/basic |
|
$(Q)rm -f .tmp_quiet_recordmcount |
|
|
|
# To avoid any implicit rule to kick in, define an empty command. |
|
scripts/basic/%: scripts_basic ; |
|
|
|
PHONY += outputmakefile |
|
# outputmakefile generates a Makefile in the output directory, if using a |
|
# separate output directory. This allows convenient use of make in the |
|
# output directory. |
|
outputmakefile: |
|
ifneq ($(KBUILD_SRC),) |
|
$(Q)ln -fsn $(srctree) source |
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/mkmakefile \ |
|
$(srctree) $(objtree) $(VERSION) $(PATCHLEVEL) |
|
endif |
|
|
|
# Support for using generic headers in asm-generic |
|
PHONY += asm-generic |
|
asm-generic: |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
|
src=asm obj=arch/$(SRCARCH)/include/generated/asm |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.asm-generic \ |
|
src=uapi/asm obj=arch/$(SRCARCH)/include/generated/uapi/asm |
|
|
|
# To make sure we do not include .config for any of the *config targets |
|
# catch them early, and hand them over to scripts/kconfig/Makefile |
|
# It is allowed to specify more targets when calling make, including |
|
# mixing *config targets and build targets. |
|
# For example 'make oldconfig all'. |
|
# Detect when mixed targets is specified, and make a second invocation |
|
# of make so .config is not included in this case either (for *config). |
|
|
|
version_h := include/generated/uapi/linux/version.h |
|
|
|
no-dot-config-targets := clean mrproper distclean \ |
|
cscope gtags TAGS tags help %docs check% coccicheck \ |
|
$(version_h) headers_% archheaders archscripts \ |
|
kernelversion %src-pkg |
|
|
|
config-targets := 0 |
|
mixed-targets := 0 |
|
dot-config := 1 |
|
|
|
ifneq ($(filter $(no-dot-config-targets), $(MAKECMDGOALS)),) |
|
ifeq ($(filter-out $(no-dot-config-targets), $(MAKECMDGOALS)),) |
|
dot-config := 0 |
|
endif |
|
endif |
|
|
|
ifeq ($(KBUILD_EXTMOD),) |
|
ifneq ($(filter config %config,$(MAKECMDGOALS)),) |
|
config-targets := 1 |
|
ifneq ($(filter-out config %config,$(MAKECMDGOALS)),) |
|
mixed-targets := 1 |
|
endif |
|
endif |
|
endif |
|
|
|
ifeq ($(mixed-targets),1) |
|
# =========================================================================== |
|
# We're called with mixed targets (*config and build targets). |
|
# Handle them one by one. |
|
|
|
%:: FORCE |
|
$(Q)$(MAKE) -C $(srctree) KBUILD_SRC= $@ |
|
|
|
else |
|
ifeq ($(config-targets),1) |
|
# =========================================================================== |
|
# *config targets only - make sure prerequisites are updated, and descend |
|
# in scripts/kconfig to make the *config target |
|
|
|
# Read arch specific Makefile to set KBUILD_DEFCONFIG as needed. |
|
# KBUILD_DEFCONFIG may point out an alternative default configuration |
|
# used for 'make defconfig' |
|
include $(srctree)/arch/$(SRCARCH)/Makefile |
|
export KBUILD_DEFCONFIG KBUILD_KCONFIG |
|
|
|
config: scripts_basic outputmakefile FORCE |
|
$(Q)mkdir -p include/linux include/config |
|
$(Q)$(MAKE) $(build)=scripts/kconfig $@ |
|
|
|
%config: scripts_basic outputmakefile FORCE |
|
$(Q)mkdir -p include/linux include/config |
|
$(Q)$(MAKE) $(build)=scripts/kconfig $@ |
|
|
|
else |
|
# =========================================================================== |
|
# Build targets only - this includes vmlinux, arch specific targets, clean |
|
# targets and others. In general all targets except *config targets. |
|
|
|
ifeq ($(KBUILD_EXTMOD),) |
|
# Additional helpers built in scripts/ |
|
# Carefully list dependencies so we do not try to build scripts twice |
|
# in parallel |
|
PHONY += scripts |
|
scripts: scripts_basic include/config/auto.conf include/config/tristate.conf \ |
|
asm-generic |
|
$(Q)$(MAKE) $(build)=$(@) |
|
|
|
# Objects we will link into vmlinux / subdirs we need to visit |
|
init-y := init/ |
|
drivers-y := drivers/ sound/ firmware/ |
|
net-y := net/ |
|
libs-y := lib/ |
|
core-y := usr/ |
|
endif # KBUILD_EXTMOD |
|
|
|
ifeq ($(dot-config),1) |
|
# Read in config |
|
-include include/config/auto.conf |
|
|
|
ifeq ($(KBUILD_EXTMOD),) |
|
# Read in dependencies to all Kconfig* files, make sure to run |
|
# oldconfig if changes are detected. |
|
-include include/config/auto.conf.cmd |
|
|
|
# To avoid any implicit rule to kick in, define an empty command |
|
$(KCONFIG_CONFIG) include/config/auto.conf.cmd: ; |
|
|
|
# If .config is newer than include/config/auto.conf, someone tinkered |
|
# with it and forgot to run make oldconfig. |
|
# if auto.conf.cmd is missing then we are probably in a cleaned tree so |
|
# we execute the config step to be sure to catch updated Kconfig files |
|
include/config/%.conf: $(KCONFIG_CONFIG) include/config/auto.conf.cmd |
|
$(Q)$(MAKE) -f $(srctree)/Makefile silentoldconfig |
|
else |
|
# external modules needs include/generated/autoconf.h and include/config/auto.conf |
|
# but do not care if they are up-to-date. Use auto.conf to trigger the test |
|
PHONY += include/config/auto.conf |
|
|
|
include/config/auto.conf: |
|
$(Q)test -e include/generated/autoconf.h -a -e $@ || ( \ |
|
echo >&2; \ |
|
echo >&2 " ERROR: Kernel configuration is invalid."; \ |
|
echo >&2 " include/generated/autoconf.h or $@ are missing.";\ |
|
echo >&2 " Run 'make oldconfig && make prepare' on kernel src to fix it."; \ |
|
echo >&2 ; \ |
|
/bin/false) |
|
|
|
endif # KBUILD_EXTMOD |
|
|
|
else |
|
# Dummy target needed, because used as prerequisite |
|
include/config/auto.conf: ; |
|
endif # $(dot-config) |
|
|
|
# The all: target is the default when no target is given on the |
|
# command line. |
|
# This allow a user to issue only 'make' to build a kernel including modules |
|
# Defaults to vmlinux, but the arch makefile usually adds further targets |
|
all: vmlinux |
|
|
|
ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE |
|
KBUILD_CFLAGS += -Os $(call cc-disable-warning,maybe-uninitialized,) |
|
else |
|
KBUILD_CFLAGS += -O2 |
|
endif |
|
|
|
include $(srctree)/arch/$(SRCARCH)/Makefile |
|
|
|
ifdef CONFIG_READABLE_ASM |
|
# Disable optimizations that make assembler listings hard to read. |
|
# reorder blocks reorders the control in the function |
|
# ipa clone creates specialized cloned functions |
|
# partial inlining inlines only parts of functions |
|
KBUILD_CFLAGS += $(call cc-option,-fno-reorder-blocks,) \ |
|
$(call cc-option,-fno-ipa-cp-clone,) \ |
|
$(call cc-option,-fno-partial-inlining) |
|
endif |
|
|
|
ifneq ($(CONFIG_FRAME_WARN),0) |
|
KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN}) |
|
endif |
|
|
|
# Force gcc to behave correct even for buggy distributions |
|
ifndef CONFIG_CC_STACKPROTECTOR |
|
KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector) |
|
endif |
|
|
|
# This warning generated too much noise in a regular build. |
|
# Use make W=1 to enable this warning (see scripts/Makefile.build) |
|
KBUILD_CFLAGS += $(call cc-disable-warning, unused-but-set-variable) |
|
|
|
ifdef CONFIG_FRAME_POINTER |
|
KBUILD_CFLAGS += -fno-omit-frame-pointer -fno-optimize-sibling-calls |
|
else |
|
# Some targets (ARM with Thumb2, for example), can't be built with frame |
|
# pointers. For those, we don't have FUNCTION_TRACER automatically |
|
# select FRAME_POINTER. However, FUNCTION_TRACER adds -pg, and this is |
|
# incompatible with -fomit-frame-pointer with current GCC, so we don't use |
|
# -fomit-frame-pointer with FUNCTION_TRACER. |
|
ifndef CONFIG_FUNCTION_TRACER |
|
KBUILD_CFLAGS += -fomit-frame-pointer |
|
endif |
|
endif |
|
|
|
ifdef CONFIG_DEBUG_INFO |
|
KBUILD_CFLAGS += -g |
|
KBUILD_AFLAGS += -gdwarf-2 |
|
endif |
|
|
|
ifdef CONFIG_DEBUG_INFO_REDUCED |
|
KBUILD_CFLAGS += $(call cc-option, -femit-struct-debug-baseonly) \ |
|
$(call cc-option,-fno-var-tracking) |
|
endif |
|
|
|
ifdef CONFIG_FUNCTION_TRACER |
|
ifdef CONFIG_HAVE_FENTRY |
|
CC_USING_FENTRY := $(call cc-option, -mfentry -DCC_USING_FENTRY) |
|
endif |
|
KBUILD_CFLAGS += -pg $(CC_USING_FENTRY) |
|
KBUILD_AFLAGS += $(CC_USING_FENTRY) |
|
ifdef CONFIG_DYNAMIC_FTRACE |
|
ifdef CONFIG_HAVE_C_RECORDMCOUNT |
|
BUILD_C_RECORDMCOUNT := y |
|
export BUILD_C_RECORDMCOUNT |
|
endif |
|
endif |
|
endif |
|
|
|
# We trigger additional mismatches with less inlining |
|
ifdef CONFIG_DEBUG_SECTION_MISMATCH |
|
KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once) |
|
endif |
|
|
|
# arch Makefile may override CC so keep this after arch Makefile is included |
|
NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include) |
|
CHECKFLAGS += $(NOSTDINC_FLAGS) |
|
|
|
# warn about C99 declaration after statement |
|
KBUILD_CFLAGS += $(call cc-option,-Wdeclaration-after-statement,) |
|
|
|
# disable pointer signed / unsigned warnings in gcc 4.0 |
|
KBUILD_CFLAGS += $(call cc-disable-warning, pointer-sign) |
|
|
|
# disable invalid "can't wrap" optimizations for signed / pointers |
|
KBUILD_CFLAGS += $(call cc-option,-fno-strict-overflow) |
|
|
|
# conserve stack if available |
|
KBUILD_CFLAGS += $(call cc-option,-fconserve-stack) |
|
|
|
# disallow errors like 'EXPORT_GPL(foo);' with missing header |
|
KBUILD_CFLAGS += $(call cc-option,-Werror=implicit-int) |
|
|
|
# require functions to have arguments in prototypes, not empty 'int foo()' |
|
KBUILD_CFLAGS += $(call cc-option,-Werror=strict-prototypes) |
|
|
|
# use the deterministic mode of AR if available |
|
KBUILD_ARFLAGS := $(call ar-option,D) |
|
|
|
# check for 'asm goto' |
|
ifeq ($(shell $(CONFIG_SHELL) $(srctree)/scripts/gcc-goto.sh $(CC)), y) |
|
KBUILD_CFLAGS += -DCC_HAVE_ASM_GOTO |
|
endif |
|
|
|
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments |
|
KBUILD_CPPFLAGS += $(KCPPFLAGS) |
|
KBUILD_AFLAGS += $(KAFLAGS) |
|
KBUILD_CFLAGS += $(KCFLAGS) |
|
|
|
# Use --build-id when available. |
|
LDFLAGS_BUILD_ID = $(patsubst -Wl$(comma)%,%,\ |
|
$(call cc-ldoption, -Wl$(comma)--build-id,)) |
|
KBUILD_LDFLAGS_MODULE += $(LDFLAGS_BUILD_ID) |
|
LDFLAGS_vmlinux += $(LDFLAGS_BUILD_ID) |
|
|
|
ifeq ($(CONFIG_STRIP_ASM_SYMS),y) |
|
LDFLAGS_vmlinux += $(call ld-option, -X,) |
|
endif |
|
|
|
# Default kernel image to build when no specific target is given. |
|
# KBUILD_IMAGE may be overruled on the command line or |
|
# set in the environment |
|
# Also any assignments in arch/$(ARCH)/Makefile take precedence over |
|
# this default value |
|
export KBUILD_IMAGE ?= vmlinux |
|
|
|
# |
|
# INSTALL_PATH specifies where to place the updated kernel and system map |
|
# images. Default is /boot, but you can set it to other values |
|
export INSTALL_PATH ?= /boot |
|
|
|
# |
|
# INSTALL_MOD_PATH specifies a prefix to MODLIB for module directory |
|
# relocations required by build roots. This is not defined in the |
|
# makefile but the argument can be passed to make if needed. |
|
# |
|
|
|
MODLIB = $(INSTALL_MOD_PATH)/lib/modules/$(KERNELRELEASE) |
|
export MODLIB |
|
|
|
# |
|
# INSTALL_MOD_STRIP, if defined, will cause modules to be |
|
# stripped after they are installed. If INSTALL_MOD_STRIP is '1', then |
|
# the default option --strip-debug will be used. Otherwise, |
|
# INSTALL_MOD_STRIP value will be used as the options to the strip command. |
|
|
|
ifdef INSTALL_MOD_STRIP |
|
ifeq ($(INSTALL_MOD_STRIP),1) |
|
mod_strip_cmd = $(STRIP) --strip-debug |
|
else |
|
mod_strip_cmd = $(STRIP) $(INSTALL_MOD_STRIP) |
|
endif # INSTALL_MOD_STRIP=1 |
|
else |
|
mod_strip_cmd = true |
|
endif # INSTALL_MOD_STRIP |
|
export mod_strip_cmd |
|
|
|
# Select initial ramdisk compression format, default is gzip(1). |
|
# This shall be used by the dracut(8) tool while creating an initramfs image. |
|
# |
|
INITRD_COMPRESS-y := gzip |
|
INITRD_COMPRESS-$(CONFIG_RD_BZIP2) := bzip2 |
|
INITRD_COMPRESS-$(CONFIG_RD_LZMA) := lzma |
|
INITRD_COMPRESS-$(CONFIG_RD_XZ) := xz |
|
INITRD_COMPRESS-$(CONFIG_RD_LZO) := lzo |
|
INITRD_COMPRESS-$(CONFIG_RD_LZ4) := lz4 |
|
# do not export INITRD_COMPRESS, since we didn't actually |
|
# choose a sane default compression above. |
|
# export INITRD_COMPRESS := $(INITRD_COMPRESS-y) |
|
|
|
ifdef CONFIG_MODULE_SIG_ALL |
|
MODSECKEY = ./signing_key.priv |
|
MODPUBKEY = ./signing_key.x509 |
|
export MODPUBKEY |
|
mod_sign_cmd = perl $(srctree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) $(MODSECKEY) $(MODPUBKEY) |
|
else |
|
mod_sign_cmd = true |
|
endif |
|
export mod_sign_cmd |
|
|
|
|
|
ifeq ($(KBUILD_EXTMOD),) |
|
core-y += kernel/ mm/ fs/ ipc/ security/ crypto/ block/ |
|
|
|
vmlinux-dirs := $(patsubst %/,%,$(filter %/, $(init-y) $(init-m) \ |
|
$(core-y) $(core-m) $(drivers-y) $(drivers-m) \ |
|
$(net-y) $(net-m) $(libs-y) $(libs-m))) |
|
|
|
vmlinux-alldirs := $(sort $(vmlinux-dirs) $(patsubst %/,%,$(filter %/, \ |
|
$(init-n) $(init-) \ |
|
$(core-n) $(core-) $(drivers-n) $(drivers-) \ |
|
$(net-n) $(net-) $(libs-n) $(libs-)))) |
|
|
|
init-y := $(patsubst %/, %/built-in.o, $(init-y)) |
|
core-y := $(patsubst %/, %/built-in.o, $(core-y)) |
|
drivers-y := $(patsubst %/, %/built-in.o, $(drivers-y)) |
|
net-y := $(patsubst %/, %/built-in.o, $(net-y)) |
|
libs-y1 := $(patsubst %/, %/lib.a, $(libs-y)) |
|
libs-y2 := $(patsubst %/, %/built-in.o, $(libs-y)) |
|
libs-y := $(libs-y1) $(libs-y2) |
|
|
|
# Externally visible symbols (used by link-vmlinux.sh) |
|
export KBUILD_VMLINUX_INIT := $(head-y) $(init-y) |
|
export KBUILD_VMLINUX_MAIN := $(core-y) $(libs-y) $(drivers-y) $(net-y) |
|
export KBUILD_LDS := arch/$(SRCARCH)/kernel/vmlinux.lds |
|
export LDFLAGS_vmlinux |
|
# used by scripts/pacmage/Makefile |
|
export KBUILD_ALLDIRS := $(sort $(filter-out arch/%,$(vmlinux-alldirs)) arch Documentation include samples scripts tools virt) |
|
|
|
vmlinux-deps := $(KBUILD_LDS) $(KBUILD_VMLINUX_INIT) $(KBUILD_VMLINUX_MAIN) |
|
|
|
# Final link of vmlinux |
|
cmd_link-vmlinux = $(CONFIG_SHELL) $< $(LD) $(LDFLAGS) $(LDFLAGS_vmlinux) |
|
quiet_cmd_link-vmlinux = LINK $@ |
|
|
|
# Include targets which we want to |
|
# execute if the rest of the kernel build went well. |
|
vmlinux: scripts/link-vmlinux.sh $(vmlinux-deps) FORCE |
|
ifdef CONFIG_HEADERS_CHECK |
|
$(Q)$(MAKE) -f $(srctree)/Makefile headers_check |
|
endif |
|
ifdef CONFIG_SAMPLES |
|
$(Q)$(MAKE) $(build)=samples |
|
endif |
|
ifdef CONFIG_BUILD_DOCSRC |
|
$(Q)$(MAKE) $(build)=Documentation |
|
endif |
|
+$(call if_changed,link-vmlinux) |
|
|
|
# The actual objects are generated when descending, |
|
# make sure no implicit rule kicks in |
|
$(sort $(vmlinux-deps)): $(vmlinux-dirs) ; |
|
|
|
# Handle descending into subdirectories listed in $(vmlinux-dirs) |
|
# Preset locale variables to speed up the build process. Limit locale |
|
# tweaks to this spot to avoid wrong language settings when running |
|
# make menuconfig etc. |
|
# Error messages still appears in the original language |
|
|
|
PHONY += $(vmlinux-dirs) |
|
$(vmlinux-dirs): prepare scripts |
|
$(Q)$(MAKE) $(build)=$@ |
|
|
|
define filechk_kernel.release |
|
echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
|
endef |
|
|
|
# Store (new) KERNELRELEASE string in include/config/kernel.release |
|
include/config/kernel.release: include/config/auto.conf FORCE |
|
$(call filechk,kernel.release) |
|
|
|
|
|
# Things we need to do before we recursively start building the kernel |
|
# or the modules are listed in "prepare". |
|
# A multi level approach is used. prepareN is processed before prepareN-1. |
|
# archprepare is used in arch Makefiles and when processed asm symlink, |
|
# version.h and scripts_basic is processed / created. |
|
|
|
# Listed in dependency order |
|
PHONY += prepare archprepare prepare0 prepare1 prepare2 prepare3 |
|
|
|
# prepare3 is used to check if we are building in a separate output directory, |
|
# and if so do: |
|
# 1) Check that make has not been executed in the kernel src $(srctree) |
|
prepare3: include/config/kernel.release |
|
ifneq ($(KBUILD_SRC),) |
|
@$(kecho) ' Using $(srctree) as source for kernel' |
|
$(Q)if [ -f $(srctree)/.config -o -d $(srctree)/include/config ]; then \ |
|
echo >&2 " $(srctree) is not clean, please run 'make mrproper'"; \ |
|
echo >&2 " in the '$(srctree)' directory.";\ |
|
/bin/false; \ |
|
fi; |
|
endif |
|
|
|
# prepare2 creates a makefile if using a separate output directory |
|
prepare2: prepare3 outputmakefile asm-generic |
|
|
|
prepare1: prepare2 $(version_h) include/generated/utsrelease.h \ |
|
include/config/auto.conf |
|
$(cmd_crmodverdir) |
|
|
|
archprepare: archheaders archscripts prepare1 scripts_basic |
|
|
|
prepare0: archprepare FORCE |
|
$(Q)$(MAKE) $(build)=. |
|
|
|
# All the preparing.. |
|
prepare: prepare0 |
|
|
|
# Generate some files |
|
# --------------------------------------------------------------------------- |
|
|
|
# KERNELRELEASE can change from a few different places, meaning version.h |
|
# needs to be updated, so this check is forced on all builds |
|
|
|
uts_len := 64 |
|
define filechk_utsrelease.h |
|
if [ `echo -n "$(KERNELRELEASE)" | wc -c ` -gt $(uts_len) ]; then \ |
|
echo '"$(KERNELRELEASE)" exceeds $(uts_len) characters' >&2; \ |
|
exit 1; \ |
|
fi; \ |
|
(echo \#define UTS_RELEASE \"$(KERNELRELEASE)\";) |
|
endef |
|
|
|
define filechk_version.h |
|
(echo \#define LINUX_VERSION_CODE $(shell \ |
|
expr $(VERSION) \* 65536 + 0$(PATCHLEVEL) \* 256 + 0$(SUBLEVEL)); \ |
|
echo '#define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))';) |
|
endef |
|
|
|
$(version_h): $(srctree)/Makefile FORCE |
|
$(call filechk,version.h) |
|
|
|
include/generated/utsrelease.h: include/config/kernel.release FORCE |
|
$(call filechk,utsrelease.h) |
|
|
|
PHONY += headerdep |
|
headerdep: |
|
$(Q)find $(srctree)/include/ -name '*.h' | xargs --max-args 1 \ |
|
$(srctree)/scripts/headerdep.pl -I$(srctree)/include |
|
|
|
# --------------------------------------------------------------------------- |
|
|
|
PHONY += depend dep |
|
depend dep: |
|
@echo '*** Warning: make $@ is unnecessary now.' |
|
|
|
# --------------------------------------------------------------------------- |
|
# Firmware install |
|
INSTALL_FW_PATH=$(INSTALL_MOD_PATH)/lib/firmware |
|
export INSTALL_FW_PATH |
|
|
|
PHONY += firmware_install |
|
firmware_install: FORCE |
|
@mkdir -p $(objtree)/firmware |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_install |
|
|
|
# --------------------------------------------------------------------------- |
|
# Kernel headers |
|
|
|
#Default location for installed headers |
|
export INSTALL_HDR_PATH = $(objtree)/usr |
|
|
|
hdr-inst := -rR -f $(srctree)/scripts/Makefile.headersinst obj |
|
|
|
# If we do an all arch process set dst to asm-$(hdr-arch) |
|
hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm) |
|
|
|
PHONY += archheaders |
|
archheaders: |
|
|
|
PHONY += archscripts |
|
archscripts: |
|
|
|
PHONY += __headers |
|
__headers: $(version_h) scripts_basic asm-generic archheaders archscripts FORCE |
|
$(Q)$(MAKE) $(build)=scripts build_unifdef |
|
|
|
PHONY += headers_install_all |
|
headers_install_all: |
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh install |
|
|
|
PHONY += headers_install |
|
headers_install: __headers |
|
$(if $(wildcard $(srctree)/arch/$(hdr-arch)/include/uapi/asm/Kbuild),, \ |
|
$(error Headers not exportable for the $(SRCARCH) architecture)) |
|
$(Q)$(MAKE) $(hdr-inst)=include/uapi |
|
$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) |
|
|
|
PHONY += headers_check_all |
|
headers_check_all: headers_install_all |
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/headers.sh check |
|
|
|
PHONY += headers_check |
|
headers_check: headers_install |
|
$(Q)$(MAKE) $(hdr-inst)=include/uapi HDRCHECK=1 |
|
$(Q)$(MAKE) $(hdr-inst)=arch/$(hdr-arch)/include/uapi/asm $(hdr-dst) HDRCHECK=1 |
|
|
|
# --------------------------------------------------------------------------- |
|
# Modules |
|
|
|
ifdef CONFIG_MODULES |
|
|
|
# By default, build modules as well |
|
|
|
all: modules |
|
|
|
# Build modules |
|
# |
|
# A module can be listed more than once in obj-m resulting in |
|
# duplicate lines in modules.order files. Those are removed |
|
# using awk while concatenating to the final file. |
|
|
|
PHONY += modules |
|
modules: $(vmlinux-dirs) $(if $(KBUILD_BUILTIN),vmlinux) modules.builtin |
|
$(Q)$(AWK) '!x[$$0]++' $(vmlinux-dirs:%=$(objtree)/%/modules.order) > $(objtree)/modules.order |
|
@$(kecho) ' Building modules, stage 2.'; |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modbuild |
|
|
|
modules.builtin: $(vmlinux-dirs:%=%/modules.builtin) |
|
$(Q)$(AWK) '!x[$$0]++' $^ > $(objtree)/modules.builtin |
|
|
|
%/modules.builtin: include/config/auto.conf |
|
$(Q)$(MAKE) $(modbuiltin)=$* |
|
|
|
|
|
# Target to prepare building external modules |
|
PHONY += modules_prepare |
|
modules_prepare: prepare scripts |
|
|
|
# Target to install modules |
|
PHONY += modules_install |
|
modules_install: _modinst_ _modinst_post |
|
|
|
PHONY += _modinst_ |
|
_modinst_: |
|
@rm -rf $(MODLIB)/kernel |
|
@rm -f $(MODLIB)/source |
|
@mkdir -p $(MODLIB)/kernel |
|
@ln -s $(srctree) $(MODLIB)/source |
|
@if [ ! $(objtree) -ef $(MODLIB)/build ]; then \ |
|
rm -f $(MODLIB)/build ; \ |
|
ln -s $(objtree) $(MODLIB)/build ; \ |
|
fi |
|
@cp -f $(objtree)/modules.order $(MODLIB)/ |
|
@cp -f $(objtree)/modules.builtin $(MODLIB)/ |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
|
|
|
# This depmod is only for convenience to give the initial |
|
# boot a modules.dep even before / is mounted read-write. However the |
|
# boot script depmod is the master version. |
|
PHONY += _modinst_post |
|
_modinst_post: _modinst_ |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.fwinst obj=firmware __fw_modinst |
|
$(call cmd,depmod) |
|
|
|
ifeq ($(CONFIG_MODULE_SIG), y) |
|
PHONY += modules_sign |
|
modules_sign: |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modsign |
|
endif |
|
|
|
else # CONFIG_MODULES |
|
|
|
# Modules not configured |
|
# --------------------------------------------------------------------------- |
|
|
|
modules modules_install: FORCE |
|
@echo >&2 |
|
@echo >&2 "The present kernel configuration has modules disabled." |
|
@echo >&2 "Type 'make config' and enable loadable module support." |
|
@echo >&2 "Then build a kernel with module support enabled." |
|
@echo >&2 |
|
@exit 1 |
|
|
|
endif # CONFIG_MODULES |
|
|
|
### |
|
# Cleaning is done on three levels. |
|
# make clean Delete most generated files |
|
# Leave enough to build external modules |
|
# make mrproper Delete the current configuration, and all generated files |
|
# make distclean Remove editor backup files, patch leftover files and the like |
|
|
|
# Directories & files removed with 'make clean' |
|
CLEAN_DIRS += $(MODVERDIR) |
|
|
|
# Directories & files removed with 'make mrproper' |
|
MRPROPER_DIRS += include/config usr/include include/generated \ |
|
arch/*/include/generated |
|
MRPROPER_FILES += .config .config.old .version .old_version $(version_h) \ |
|
Module.symvers tags TAGS cscope* GPATH GTAGS GRTAGS GSYMS \ |
|
signing_key.priv signing_key.x509 x509.genkey \ |
|
extra_certificates signing_key.x509.keyid \ |
|
signing_key.x509.signer |
|
|
|
# clean - Delete most, but leave enough to build external modules |
|
# |
|
clean: rm-dirs := $(CLEAN_DIRS) |
|
clean: rm-files := $(CLEAN_FILES) |
|
clean-dirs := $(addprefix _clean_, . $(vmlinux-alldirs) Documentation samples) |
|
|
|
PHONY += $(clean-dirs) clean archclean vmlinuxclean |
|
$(clean-dirs): |
|
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
|
|
|
vmlinuxclean: |
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/link-vmlinux.sh clean |
|
|
|
clean: archclean vmlinuxclean |
|
|
|
# mrproper - Delete all generated files, including .config |
|
# |
|
mrproper: rm-dirs := $(wildcard $(MRPROPER_DIRS)) |
|
mrproper: rm-files := $(wildcard $(MRPROPER_FILES)) |
|
mrproper-dirs := $(addprefix _mrproper_,Documentation/DocBook scripts) |
|
|
|
PHONY += $(mrproper-dirs) mrproper archmrproper |
|
$(mrproper-dirs): |
|
$(Q)$(MAKE) $(clean)=$(patsubst _mrproper_%,%,$@) |
|
|
|
mrproper: clean archmrproper $(mrproper-dirs) |
|
$(call cmd,rmdirs) |
|
$(call cmd,rmfiles) |
|
|
|
# distclean |
|
# |
|
PHONY += distclean |
|
|
|
distclean: mrproper |
|
@find $(srctree) $(RCS_FIND_IGNORE) \ |
|
\( -name '*.orig' -o -name '*.rej' -o -name '*~' \ |
|
-o -name '*.bak' -o -name '#*#' -o -name '.*.orig' \ |
|
-o -name '.*.rej' \ |
|
-o -name '*%' -o -name '.*.cmd' -o -name 'core' \) \ |
|
-type f -print | xargs rm -f |
|
|
|
|
|
# Packaging of the kernel to various formats |
|
# --------------------------------------------------------------------------- |
|
# rpm target kept for backward compatibility |
|
package-dir := $(srctree)/scripts/package |
|
|
|
%src-pkg: FORCE |
|
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
|
%pkg: include/config/kernel.release FORCE |
|
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
|
rpm: include/config/kernel.release FORCE |
|
$(Q)$(MAKE) $(build)=$(package-dir) $@ |
|
|
|
|
|
# Brief documentation of the typical targets used |
|
# --------------------------------------------------------------------------- |
|
|
|
boards := $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*_defconfig) |
|
boards := $(notdir $(boards)) |
|
board-dirs := $(dir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/*/*_defconfig)) |
|
board-dirs := $(sort $(notdir $(board-dirs:/=))) |
|
|
|
help: |
|
@echo 'Cleaning targets:' |
|
@echo ' clean - Remove most generated files but keep the config and' |
|
@echo ' enough build support to build external modules' |
|
@echo ' mrproper - Remove all generated files + config + various backup files' |
|
@echo ' distclean - mrproper + remove editor backup and patch files' |
|
@echo '' |
|
@echo 'Configuration targets:' |
|
@$(MAKE) -f $(srctree)/scripts/kconfig/Makefile help |
|
@echo '' |
|
@echo 'Other generic targets:' |
|
@echo ' all - Build all targets marked with [*]' |
|
@echo '* vmlinux - Build the bare kernel' |
|
@echo '* modules - Build all modules' |
|
@echo ' modules_install - Install all modules to INSTALL_MOD_PATH (default: /)' |
|
@echo ' firmware_install- Install all firmware to INSTALL_FW_PATH' |
|
@echo ' (default: $$(INSTALL_MOD_PATH)/lib/firmware)' |
|
@echo ' dir/ - Build all files in dir and below' |
|
@echo ' dir/file.[oisS] - Build specified target only' |
|
@echo ' dir/file.lst - Build specified mixed source/assembly target only' |
|
@echo ' (requires a recent binutils and recent build (System.map))' |
|
@echo ' dir/file.ko - Build module including final link' |
|
@echo ' modules_prepare - Set up for building external modules' |
|
@echo ' tags/TAGS - Generate tags file for editors' |
|
@echo ' cscope - Generate cscope index' |
|
@echo ' gtags - Generate GNU GLOBAL index' |
|
@echo ' kernelrelease - Output the release version string' |
|
@echo ' kernelversion - Output the version stored in Makefile' |
|
@echo ' image_name - Output the image name' |
|
@echo ' headers_install - Install sanitised kernel headers to INSTALL_HDR_PATH'; \ |
|
echo ' (default: $(INSTALL_HDR_PATH))'; \ |
|
echo '' |
|
@echo 'Static analysers' |
|
@echo ' checkstack - Generate a list of stack hogs' |
|
@echo ' namespacecheck - Name space analysis on compiled kernel' |
|
@echo ' versioncheck - Sanity check on version.h usage' |
|
@echo ' includecheck - Check for duplicate included header files' |
|
@echo ' export_report - List the usages of all exported symbols' |
|
@echo ' headers_check - Sanity check on exported headers' |
|
@echo ' headerdep - Detect inclusion cycles in headers' |
|
@$(MAKE) -f $(srctree)/scripts/Makefile.help checker-help |
|
@echo '' |
|
@echo 'Kernel packaging:' |
|
@$(MAKE) $(build)=$(package-dir) help |
|
@echo '' |
|
@echo 'Documentation targets:' |
|
@$(MAKE) -f $(srctree)/Documentation/DocBook/Makefile dochelp |
|
@echo '' |
|
@echo 'Architecture specific targets ($(SRCARCH)):' |
|
@$(if $(archhelp),$(archhelp),\ |
|
echo ' No architecture specific help defined for $(SRCARCH)') |
|
@echo '' |
|
@$(if $(boards), \ |
|
$(foreach b, $(boards), \ |
|
printf " %-24s - Build for %s\\n" $(b) $(subst _defconfig,,$(b));) \ |
|
echo '') |
|
@$(if $(board-dirs), \ |
|
$(foreach b, $(board-dirs), \ |
|
printf " %-16s - Show %s-specific targets\\n" help-$(b) $(b);) \ |
|
printf " %-16s - Show all of the above\\n" help-boards; \ |
|
echo '') |
|
|
|
@echo ' make V=0|1 [targets] 0 => quiet build (default), 1 => verbose build' |
|
@echo ' make V=2 [targets] 2 => give reason for rebuild of target' |
|
@echo ' make O=dir [targets] Locate all output files in "dir", including .config' |
|
@echo ' make C=1 [targets] Check all c source with $$CHECK (sparse by default)' |
|
@echo ' make C=2 [targets] Force check of all c source with $$CHECK' |
|
@echo ' make RECORDMCOUNT_WARN=1 [targets] Warn about ignored mcount sections' |
|
@echo ' make W=n [targets] Enable extra gcc checks, n=1,2,3 where' |
|
@echo ' 1: warnings which may be relevant and do not occur too often' |
|
@echo ' 2: warnings which occur quite often but may still be relevant' |
|
@echo ' 3: more obscure warnings, can most likely be ignored' |
|
@echo ' Multiple levels can be combined with W=12 or W=123' |
|
@echo '' |
|
@echo 'Execute "make" or "make all" to build all targets marked with [*] ' |
|
@echo 'For further info see the ./README file' |
|
|
|
|
|
help-board-dirs := $(addprefix help-,$(board-dirs)) |
|
|
|
help-boards: $(help-board-dirs) |
|
|
|
boards-per-dir = $(notdir $(wildcard $(srctree)/arch/$(SRCARCH)/configs/$*/*_defconfig)) |
|
|
|
$(help-board-dirs): help-%: |
|
@echo 'Architecture specific targets ($(SRCARCH) $*):' |
|
@$(if $(boards-per-dir), \ |
|
$(foreach b, $(boards-per-dir), \ |
|
printf " %-24s - Build for %s\\n" $*/$(b) $(subst _defconfig,,$(b));) \ |
|
echo '') |
|
|
|
|
|
# Documentation targets |
|
# --------------------------------------------------------------------------- |
|
%docs: scripts_basic FORCE |
|
$(Q)$(MAKE) $(build)=scripts build_docproc |
|
$(Q)$(MAKE) $(build)=Documentation/DocBook $@ |
|
|
|
else # KBUILD_EXTMOD |
|
|
|
### |
|
# External module support. |
|
# When building external modules the kernel used as basis is considered |
|
# read-only, and no consistency checks are made and the make |
|
# system is not used on the basis kernel. If updates are required |
|
# in the basis kernel ordinary make commands (without M=...) must |
|
# be used. |
|
# |
|
# The following are the only valid targets when building external |
|
# modules. |
|
# make M=dir clean Delete all automatically generated files |
|
# make M=dir modules Make all modules in specified dir |
|
# make M=dir Same as 'make M=dir modules' |
|
# make M=dir modules_install |
|
# Install the modules built in the module directory |
|
# Assumes install directory is already created |
|
|
|
# We are always building modules |
|
KBUILD_MODULES := 1 |
|
PHONY += crmodverdir |
|
crmodverdir: |
|
$(cmd_crmodverdir) |
|
|
|
PHONY += $(objtree)/Module.symvers |
|
$(objtree)/Module.symvers: |
|
@test -e $(objtree)/Module.symvers || ( \ |
|
echo; \ |
|
echo " WARNING: Symbol version dump $(objtree)/Module.symvers"; \ |
|
echo " is missing; modules will have no dependencies and modversions."; \ |
|
echo ) |
|
|
|
module-dirs := $(addprefix _module_,$(KBUILD_EXTMOD)) |
|
PHONY += $(module-dirs) modules |
|
$(module-dirs): crmodverdir $(objtree)/Module.symvers |
|
$(Q)$(MAKE) $(build)=$(patsubst _module_%,%,$@) |
|
|
|
modules: $(module-dirs) |
|
@$(kecho) ' Building modules, stage 2.'; |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
|
|
|
PHONY += modules_install |
|
modules_install: _emodinst_ _emodinst_post |
|
|
|
install-dir := $(if $(INSTALL_MOD_DIR),$(INSTALL_MOD_DIR),extra) |
|
PHONY += _emodinst_ |
|
_emodinst_: |
|
$(Q)mkdir -p $(MODLIB)/$(install-dir) |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modinst |
|
|
|
PHONY += _emodinst_post |
|
_emodinst_post: _emodinst_ |
|
$(call cmd,depmod) |
|
|
|
clean-dirs := $(addprefix _clean_,$(KBUILD_EXTMOD)) |
|
|
|
PHONY += $(clean-dirs) clean |
|
$(clean-dirs): |
|
$(Q)$(MAKE) $(clean)=$(patsubst _clean_%,%,$@) |
|
|
|
clean: rm-dirs := $(MODVERDIR) |
|
clean: rm-files := $(KBUILD_EXTMOD)/Module.symvers |
|
|
|
help: |
|
@echo ' Building external modules.' |
|
@echo ' Syntax: make -C path/to/kernel/src M=$$PWD target' |
|
@echo '' |
|
@echo ' modules - default target, build the module(s)' |
|
@echo ' modules_install - install the module' |
|
@echo ' clean - remove generated files in module directory only' |
|
@echo '' |
|
|
|
# Dummies... |
|
PHONY += prepare scripts |
|
prepare: ; |
|
scripts: ; |
|
endif # KBUILD_EXTMOD |
|
|
|
clean: $(clean-dirs) |
|
$(call cmd,rmdirs) |
|
$(call cmd,rmfiles) |
|
@find $(if $(KBUILD_EXTMOD), $(KBUILD_EXTMOD), .) $(RCS_FIND_IGNORE) \ |
|
\( -name '*.[oas]' -o -name '*.ko' -o -name '.*.cmd' \ |
|
-o -name '*.ko.*' \ |
|
-o -name '.*.d' -o -name '.*.tmp' -o -name '*.mod.c' \ |
|
-o -name '*.symtypes' -o -name 'modules.order' \ |
|
-o -name modules.builtin -o -name '.tmp_*.o.*' \ |
|
-o -name '*.gcno' \) -type f -print | xargs rm -f |
|
|
|
# Generate tags for editors |
|
# --------------------------------------------------------------------------- |
|
quiet_cmd_tags = GEN $@ |
|
cmd_tags = $(CONFIG_SHELL) $(srctree)/scripts/tags.sh $@ |
|
|
|
tags TAGS cscope gtags: FORCE |
|
$(call cmd,tags) |
|
|
|
# Scripts to check various things for consistency |
|
# --------------------------------------------------------------------------- |
|
|
|
PHONY += includecheck versioncheck coccicheck namespacecheck export_report |
|
|
|
includecheck: |
|
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
|
-name '*.[hcS]' -type f -print | sort \ |
|
| xargs $(PERL) -w $(srctree)/scripts/checkincludes.pl |
|
|
|
versioncheck: |
|
find $(srctree)/* $(RCS_FIND_IGNORE) \ |
|
-name '*.[hcS]' -type f -print | sort \ |
|
| xargs $(PERL) -w $(srctree)/scripts/checkversion.pl |
|
|
|
coccicheck: |
|
$(Q)$(CONFIG_SHELL) $(srctree)/scripts/$@ |
|
|
|
namespacecheck: |
|
$(PERL) $(srctree)/scripts/namespace.pl |
|
|
|
export_report: |
|
$(PERL) $(srctree)/scripts/export_report.pl |
|
|
|
endif #ifeq ($(config-targets),1) |
|
endif #ifeq ($(mixed-targets),1) |
|
|
|
PHONY += checkstack kernelrelease kernelversion image_name |
|
|
|
# UML needs a little special treatment here. It wants to use the host |
|
# toolchain, so needs $(SUBARCH) passed to checkstack.pl. Everyone |
|
# else wants $(ARCH), including people doing cross-builds, which means |
|
# that $(SUBARCH) doesn't work here. |
|
ifeq ($(ARCH), um) |
|
CHECKSTACK_ARCH := $(SUBARCH) |
|
else |
|
CHECKSTACK_ARCH := $(ARCH) |
|
endif |
|
checkstack: |
|
$(OBJDUMP) -d vmlinux $$(find . -name '*.ko') | \ |
|
$(PERL) $(src)/scripts/checkstack.pl $(CHECKSTACK_ARCH) |
|
|
|
kernelrelease: |
|
@echo "$(KERNELVERSION)$$($(CONFIG_SHELL) $(srctree)/scripts/setlocalversion $(srctree))" |
|
|
|
kernelversion: |
|
@echo $(KERNELVERSION) |
|
|
|
image_name: |
|
@echo $(KBUILD_IMAGE) |
|
|
|
# Clear a bunch of variables before executing the submake |
|
tools/: FORCE |
|
$(Q)mkdir -p $(objtree)/tools |
|
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ |
|
|
|
tools/%: FORCE |
|
$(Q)mkdir -p $(objtree)/tools |
|
$(Q)$(MAKE) LDFLAGS= MAKEFLAGS="$(filter --j% -j,$(MAKEFLAGS))" O=$(objtree) subdir=tools -C $(src)/tools/ $* |
|
|
|
# Single targets |
|
# --------------------------------------------------------------------------- |
|
# Single targets are compatible with: |
|
# - build with mixed source and output |
|
# - build with separate output dir 'make O=...' |
|
# - external modules |
|
# |
|
# target-dir => where to store outputfile |
|
# build-dir => directory in kernel source tree to use |
|
|
|
ifeq ($(KBUILD_EXTMOD),) |
|
build-dir = $(patsubst %/,%,$(dir $@)) |
|
target-dir = $(dir $@) |
|
else |
|
zap-slash=$(filter-out .,$(patsubst %/,%,$(dir $@))) |
|
build-dir = $(KBUILD_EXTMOD)$(if $(zap-slash),/$(zap-slash)) |
|
target-dir = $(if $(KBUILD_EXTMOD),$(dir $<),$(dir $@)) |
|
endif |
|
|
|
%.s: %.c prepare scripts FORCE |
|
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
|
%.i: %.c prepare scripts FORCE |
|
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
|
%.o: %.c prepare scripts FORCE |
|
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
|
%.lst: %.c prepare scripts FORCE |
|
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
|
%.s: %.S prepare scripts FORCE |
|
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
|
%.o: %.S prepare scripts FORCE |
|
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
|
%.symtypes: %.c prepare scripts FORCE |
|
$(Q)$(MAKE) $(build)=$(build-dir) $(target-dir)$(notdir $@) |
|
|
|
# Modules |
|
/: prepare scripts FORCE |
|
$(cmd_crmodverdir) |
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
|
$(build)=$(build-dir) |
|
%/: prepare scripts FORCE |
|
$(cmd_crmodverdir) |
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
|
$(build)=$(build-dir) |
|
%.ko: prepare scripts FORCE |
|
$(cmd_crmodverdir) |
|
$(Q)$(MAKE) KBUILD_MODULES=$(if $(CONFIG_MODULES),1) \ |
|
$(build)=$(build-dir) $(@:.ko=.o) |
|
$(Q)$(MAKE) -f $(srctree)/scripts/Makefile.modpost |
|
|
|
# FIXME Should go into a make.lib or something |
|
# =========================================================================== |
|
|
|
quiet_cmd_rmdirs = $(if $(wildcard $(rm-dirs)),CLEAN $(wildcard $(rm-dirs))) |
|
cmd_rmdirs = rm -rf $(rm-dirs) |
|
|
|
quiet_cmd_rmfiles = $(if $(wildcard $(rm-files)),CLEAN $(wildcard $(rm-files))) |
|
cmd_rmfiles = rm -f $(rm-files) |
|
|
|
# Run depmod only if we have System.map and depmod is executable |
|
quiet_cmd_depmod = DEPMOD $(KERNELRELEASE) |
|
cmd_depmod = $(CONFIG_SHELL) $(srctree)/scripts/depmod.sh $(DEPMOD) \ |
|
$(KERNELRELEASE) "$(patsubst y,_,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX))" |
|
|
|
# Create temporary dir for module support files |
|
# clean it up only when building all modules |
|
cmd_crmodverdir = $(Q)mkdir -p $(MODVERDIR) \ |
|
$(if $(KBUILD_MODULES),; rm -f $(MODVERDIR)/*) |
|
|
|
# read all saved command lines |
|
|
|
targets := $(wildcard $(sort $(targets))) |
|
cmd_files := $(wildcard .*.cmd $(foreach f,$(targets),$(dir $(f)).$(notdir $(f)).cmd)) |
|
|
|
ifneq ($(cmd_files),) |
|
$(cmd_files): ; # Do not try to update included dependency files |
|
include $(cmd_files) |
|
endif |
|
|
|
# Shorthand for $(Q)$(MAKE) -f scripts/Makefile.clean obj=dir |
|
# Usage: |
|
# $(Q)$(MAKE) $(clean)=dir |
|
clean := -f $(if $(KBUILD_SRC),$(srctree)/)scripts/Makefile.clean obj |
|
|
|
endif # skip-makefile |
|
|
|
PHONY += FORCE |
|
FORCE: |
|
|
|
# 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)
|
|
|