From 8957014beb8e032ad6d0fa279c121a8a83d76e2b Mon Sep 17 00:00:00 2001 From: Michal Sojka Date: Tue, 12 Nov 2013 21:59:54 +0100 Subject: [PATCH] Add linux-kernel snippet I forgot to add it to the comit that split the linux rules to user and kernel parts. --- snippets/linux-kernel.omk | 386 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 386 insertions(+) create mode 100644 snippets/linux-kernel.omk diff --git a/snippets/linux-kernel.omk b/snippets/linux-kernel.omk new file mode 100644 index 0000000..0c733bc --- /dev/null +++ b/snippets/linux-kernel.omk @@ -0,0 +1,386 @@ +# kernel_LIBRARIES .. list of the kernel-space libraries +# rtlinux_LIBRARIES.. list of the RT-Linux kernel-space libraries +# kernel_HEADERS .. list of the kernel-space public header files +# rtlinux_HEADERS .. list of the RT-Linux kernel-space public header files +# kernel_MODULES .. list of the kernel side modules/applications +# rtlinux_MODULES .. list of RT-Linux the kernel side modules/applications +# kernel_INCLUDES .. additional include directories and defines for kernel-space +# rtlinux_INCLUDES .. additional include directories and defines for RT-Linux +# OMIT_KERNEL_PASSES if defined, all kernel passes are omited +# LINUX_DIR .. location of Linux kernel sources +# RTL_DIR .. location of RT-Linux sources + +KERN_INCLUDE_DIR := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/include-kern +KERN_LIB_DIR := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/lib-kern +KERN_MODULES_DIR := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/modules +KERN_BUILD_DIR := $(OUTPUT_DIR)/$(BUILD_DIR_NAME)/kern +KERN_MODPOST_DIR := $(OUTPUT_DIR)/$(BUILD_DIR_NAME)/kern-modpost + +ifndef LINUX_VERSION +LINUX_VERSION=$(shell uname -r) +endif +ifndef LINUX_DIR +LINUX_DIR=/lib/modules/$(LINUX_VERSION)/build +endif + +KERN_OBJS_DIR = $(KERN_BUILD_DIR)/$(RELATIVE_DIR) + +kernel-lib-pass: include-pass +kernel-mod-pass: kernel-lib-pass +kernel-modpost-pass: kernel-mod-pass +kernel-pass: kernel-mod-pass kernel-modpost-pass + +#===================================================================== +# Kernel-space rules and templates to compile modules, libraries etc. + +ifdef KERN_RULE_TEMPLATES + +$(KERN_LIB_DIR)/kernel.mk: $(LINUX_DIR)/.config $(MAKERULES_DIR)/kernelcfg2mk + @$(QUIET_CMD_ECHO) " KCFG2MK $@" + $(Q) $(MAKERULES_DIR)/kernelcfg2mk $(LINUX_DIR) $(KERN_LIB_DIR) + +ifeq ($(CONFIG_RTLINUX),y) +include $(RTL_DIR)/rtl.mk + +KERN_CC = $(CC) +kern_GCCLIB_DIR=$(shell LANG=C LC_ALL=C LC_MESSAGES=C $(CC) -print-search-dirs | $(SED4OMK) -n -e 's/^install: \(.*\)$$/\1/p' ) +INCLUDES := -I $(KERN_INCLUDE_DIR) $(INCLUDE) $(rtlinux_INCLUDES) $(kernel_INCLUDES) +#-DEXPORT_NO_SYMBOLS +c_o_kern_COMPILE = $(KERN_CC) -idirafter $(kern_GCCLIB_DIR)/include $(INCLUDES) $(CFLAGS) -DOMK_FOR_KERNEL -DEXPORT_SYMTAB -nostdinc +cc_o_kern_COMPILE = $(CXX) $(INCLUDES) $(CXXFLAGS) -DOMK_FOR_KERNEL -DEXPORT_SYMTAB +KERN_EXE_SUFFIX := .o +KERN_ARCH = $(ARCH) +KERN_LD = $(LD) +KERN_AR = $(AR) + +else # CONFIG_RTLINUX + +include $(KERN_LIB_DIR)/kernel.mk + +ifeq ($(LINUX_SRC),) +LINUX_SRC = $(LINUX_DIR) +endif +kernel_INCLUDES += -I $(KERN_INCLUDE_DIR) -I $(LINUX_DIR) -idirafter $(LINUX_SRC)/include/linux + +ifdef LINUX_CC +KERN_CC = $(LINUX_CC) +kern_GCCLIB_DIR=$(shell LANG=C LC_ALL=C LC_MESSAGES=C $(LINUX_CC) -print-search-dirs | $(SED4OMK) -n -e 's/^install: \(.*\)$$/\1/p' ) +else +KERN_CC = echo KERN_CC not defined - compilation skipped +endif +c_o_kern_COMPILE = $(KERN_CC) $(kernel_INCLUDES) -idirafter $(kern_GCCLIB_DIR)/include $(LINUX_CPPFLAGS) $(LINUX_CFLAGS) $(LINUX_CFLAGS_MODULE) -DOMK_FOR_KERNEL -DEXPORT_SYMTAB -nostdinc +cc_o_kern_COMPILE = $(KERN_CC) $(kernel_INCLUDES) -idirafter $(kern_GCCLIB_DIR)/include $(LINUX_CPPFLAGS) $(LINUX_CFLAGS) $(LINUX_CFLAGS_MODULE) -DOMK_FOR_KERNEL -DEXPORT_SYMTAB +S_o_kern_COMPILE = $(KERN_CC) $(kernel_INCLUDES) -idirafter $(kern_GCCLIB_DIR)/include $(LINUX_CPPFLAGS) $(LINUX_AFLAGS) $(LINUX_AFLAGS_MODULE) -DOMK_FOR_KERNEL -DEXPORT_SYMTAB -nostdinc +KERN_EXE_SUFFIX := $(LINUX_MODULE_EXT) +KERN_LDFLAGS = $(LINUX_LDFLAGS) $(LINUX_LDFLAGS_MODULE) +ifdef LINUX_ARCH +KERN_ARCH = $(LINUX_ARCH) +else +KERN_ARCH = echo KERN_ARCH not defined - skipped +endif +ifdef LINUX_LD +KERN_LD = $(LINUX_LD) +else +KERN_LD = echo KERN_LD not defined - skipped +endif +ifneq ($(LINUX_AR),) +KERN_AR = $(LINUX_AR) +else +KERN_AR = $(AR) +endif +ifeq ($(LINUX_QUOTE_MODNAME),y) +KERN_MQ=\" +KERN_KBUILD_MODNAME=-D"KBUILD_MODNAME=((THIS_MODULE)!=NULL?(THIS_MODULE)->name:NULL)" +endif +endif # CONFIG_RTLINUX + +KERN_LOADLIBES += -L$(KERN_LIB_DIR) + +KERN_LOADLIBES += $(rtlinux_LOADLIBES:%=-l%) +KERN_LOADLIBES += $(kernel_LOADLIBES:%=-l%) + + + +# Check GCC version for kernel part of build +ifndef kern_CC_MAJOR_VERSION +kern_CC_MAJOR_VERSION := $(shell $(KERN_CC) -dumpversion | $(SED4OMK) -e 's/\([^.]\)\..*/\1/') +endif +# Prepare suitable define for dependency building +ifeq ($(kern_CC_MAJOR_VERSION),2) +kern_CC_DEPFLAGS = -Wp,-MD,"$@.d.tmp" +else +kern_CC_DEPFLAGS = -MT $@ -MD -MP -MF "$@.d.tmp" +endif + +ifeq ($(KERN_EXE_SUFFIX),.ko) +ifeq ($(wildcard $(LINUX_DIR)/scripts/mod/modpost),) +KERN_MODPOST = $(LINUX_DIR)/scripts/modpost +else +KERN_MODPOST = $(LINUX_DIR)/scripts/mod/modpost +endif +KERN_MODULES_LINK_DIR = $(KERN_MODPOST_DIR) +KERN_LINK_SUFFIX = .o +else +KERN_MODULES_LINK_DIR = $(KERN_MODULES_DIR) +KERN_LINK_SUFFIX = $(KERN_EXE_SUFFIX) +endif + +ifeq ($(LINUX_CONFIG_MODVERSIONS),y) +MODPOST_OPTS += -m +MODPOST_OPTS += -i $(LINUX_DIR)/Module.symvers +ifneq ($(LINUX_BUILDHOST),) # this is not correct point, it should look for 2.6.17 kernel +MODPOST_OPTS += -I $(KERN_LIB_DIR)/Module.symvers +endif +MODPOST_OPTS += -o $(KERN_LIB_DIR)/Module.symvers +endif + +ifeq ($(LINUX_CONFIG_DEBUG_SECTION_MISMATCH),y) +MODPOST_OPTS += -S +endif + +ifeq ($(LINUX_CONFIG_MARKERS),y) +MODPOST_OPTS += -K $(LINUX_DIR)/Module.markers +MODPOST_OPTS += -M $(KERN_LIB_DIR)/Module.markers +endif + +ifeq ($(LINUX_KBUILD_MODPOST_WARN),y) +MODPOST_OPTS += -w +endif + +ifneq ($(LINUX_BUILDHOST),) +ifneq ($(LINUX_BUILDHOST),$(LINUX_ARCH)) +MODPOST_OPTS += -c +endif +endif + +define COMPILE_c_o_kern_template + +$(2): $(1) + @$(QUIET_CMD_ECHO) " CC [K] $$@" + $(Q) if $$(c_o_kern_COMPILE) $$(kern_CC_DEPFLAGS) $(3) $(KERN_KBUILD_MODNAME) \ + -D"KBUILD_BASENAME=$(KERN_MQ)$(notdir $(basename $(1)))$(KERN_MQ)" \ + -o $$@ -c $$< ; \ + then mv -f "$$@.d.tmp" "$$@.d" ; \ + else rm -f "$$@.d.tmp" ; exit 1; \ + fi +endef + + + +define COMPILE_cc_o_kern_template + +$(2): $(1) + @$(QUIET_CMD_ECHO) " CXX [K] $$@" + $(Q) if $$(cc_o_kern_COMPILE) $$(kern_CC_DEPFLAGS) $(3) $(KERN_KBUILD_MODNAME) \ + -D"KBUILD_BASENAME=$(KERN_MQ)$(notdir $(basename $(1)))$(KERN_MQ)" \ + -o $$@ -c $$< ; \ + then mv -f "$$@.d.tmp" "$$@.d" ; \ + else rm -f "$$@.d.tmp" ; exit 1; \ + fi +endef + + + +define COMPILE_S_o_kern_template + +$(2): $(1) + @$(QUIET_CMD_ECHO) " AS [K] $$@" + $(Q) if $$(S_o_kern_COMPILE) $$(kern_CC_DEPFLAGS) $(3) $(KERN_KBUILD_MODNAME) \ + -D"KBUILD_BASENAME=$(KERN_MQ)$(notdir $(basename $(1)))$(KERN_MQ)" \ + -o $$@ -c $$< ; \ + then mv -f "$$@.d.tmp" "$$@.d" ; \ + else rm -f "$$@.d.tmp" ; exit 1; \ + fi +endef + + + +define MODULE_kern_template +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.c=%.o)) +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.cc=%.o)) +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.cxx=%.o)) +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.cpp=%.o)) +$(1)_OBJS := $$(sort $$($(1)_OBJS)) + +KERN_OBJS += $$($(1)_OBJS) +KERN_SOURCES += $$($(1)_SOURCES) + +# this is hack to build "__this_module" structure for 2.6.x kernels +# modpost is used for that purpose now + +#$(1).mod.c: +# echo "\ +# #include @\ +# #include @\ +# #if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,5))@\ +# #include @\ +# #include @\ +# @\ +# MODULE_INFO(vermagic, VERMAGIC_STRING);@\ +# @\ +# #undef unix@\ +# struct module __this_module@\ +# __attribute__((section(\".gnu.linkonce.this_module\"))) = {@\ +# .name = __stringify(KBUILD_MODNAME),@\ +# .init = init_module,@\ +# #ifdef CONFIG_MODULE_UNLOAD@\ +# .exit = cleanup_module,@\ +# #endif@\ +# };@\ +# #endif@\ +# " | tr @ \\n >$$@ + + +#$(eval $(call COMPILE_c_o_kern_template,$(1).mod.c,$(1).mod.o,-DKBUILD_MODNAME=$(1))) + +$(2)/$(1)$(KERN_LINK_SUFFIX): $$($(1)_OBJS) + @$(QUIET_CMD_ECHO) " LD [K] $$@" + $(Q) $$(KERN_LD) $$(KERN_LDFLAGS) -r $$($(1)_OBJS) -L$$(kern_GCCLIB_DIR) $$($(1)_LIBS:%=-l%) $$(KERN_LOADLIBES) -Map $(KERN_OBJS_DIR)/$(1).mod.map -o $$@ + @echo "$(2)/$(1)$(KERN_LINK_SUFFIX): \\" >$(KERN_OBJS_DIR)/$(1).mod.d + @$(SED4OMK) -n -e 's/^LOAD \(.*\)$$$$/ \1 \\/p' $(KERN_OBJS_DIR)/$(1).mod.map >>$(KERN_OBJS_DIR)/$(1).mod.d + @echo >>$(KERN_OBJS_DIR)/$(1).mod.d + @if [ "$(KERN_EXE_SUFFIX)" = ".ko" ] ; then \ + echo $(1) >>$(KERN_MODPOST_DIR)/module-changes ; \ + echo $(1) >$(KERN_MODPOST_DIR)/$(1).mod.stamp ; \ + fi + +endef + + + +define LIBRARY_kern_template +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.c=%.o)) +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.cc=%.o)) +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.cxx=%.o)) +$(1)_OBJS += $$(filter %.o,$$($(1)_SOURCES:%.cpp=%.o)) +$(1)_OBJS := $$(sort $$($(1)_OBJS)) + +KERN_OBJS += $$($(1)_OBJS) +KERN_SOURCES += $$($(1)_SOURCES) + +$(KERN_LIB_DIR)/lib$(1).a: $$($(1)_OBJS) + @$(QUIET_CMD_ECHO) " AR [K] $$@" + $(Q) $(KERN_AR) rcs $$@ $$^ +endef + + +ifdef LINUX_DIR + +kernel-lib-pass-local: $(kernel_LIBRARIES:%=$(KERN_LIB_DIR)/lib%.a) + +kernel-mod-pass-local: $(kernel_MODULES:%=$(KERN_MODULES_LINK_DIR)/%$(KERN_LINK_SUFFIX)) + +$(foreach module,$(kernel_MODULES),$(eval $(call MODULE_kern_template,$(module),$(KERN_MODULES_LINK_DIR)))) + +$(foreach lib,$(kernel_LIBRARIES),$(eval $(call LIBRARY_kern_template,$(lib)))) + +endif + + +ifeq ($(CONFIG_RTLINUX),y) + +kernel-mod-pass-local: $(rtlinux_MODULES:%=$(KERN_MODULES_LINK_DIR)/%$(KERN_LINK_SUFFIX)) + +kernel-lib-pass-local: $(rtlinux_LIBRARIES:%=$(KERN_LIB_DIR)/lib%.a) + +$(foreach module,$(rtlinux_MODULES),$(eval $(call MODULE_kern_template,$(module),$(KERN_MODULES_LINK_DIR)))) + +$(foreach lib,$(rtlinux_LIBRARIES),$(eval $(call LIBRARY_kern_template,$(lib)))) + +endif + +ifeq ($(KERN_MODPOST_PASS),y) + +MODULES_LIST := $(wildcard *.mod.stamp) +MODULES_LIST := $(MODULES_LIST:%.mod.stamp=%) + +define MODPOST_kern_template +$(2) : $(1)$(KERN_LINK_SUFFIX) $(1).mod.c + @$(QUIET_CMD_ECHO) " LD [M] $$@" + $(Q) $$(c_o_kern_COMPILE) -D"KBUILD_BASENAME=$(KERN_MQ)$(1)$(KERN_MQ)" \ + -D"KBUILD_MODNAME=$(KERN_MQ)$(1)$(KERN_MQ)" \ + -o $(1).mod.o -c $(1).mod.c + $(Q) $$(KERN_LD) $$(KERN_LDFLAGS) $(1)$(KERN_LINK_SUFFIX) $(1).mod.o -r -o $$@ +endef + +kernel-modpost-versions: $(wildcard $(LINUX_DIR)/Module.symvers) + @$(QUIET_CMD_ECHO) " MODPOST $(KERN_MODPOST_DIR)" + @echo >$(KERN_MODPOST_DIR)/modpost-running + @rm -f $(KERN_MODPOST_DIR)/module-changes + $(Q) $(KERN_MODPOST) $(MODPOST_OPTS) $(MODULES_LIST:%=%$(KERN_LINK_SUFFIX)) + +$(MODULES_LIST:%=%.mod.c) : kernel-modpost-versions + +kernel-modpost-pass-local: $(MODULES_LIST:%=$(KERN_MODULES_DIR)/%$(KERN_EXE_SUFFIX)) + @rm -f $(KERN_MODPOST_DIR)/modpost-running + +$(foreach module,$(MODULES_LIST),$(eval $(call MODPOST_kern_template,$(module),$(module:%=$(KERN_MODULES_DIR)/%$(KERN_EXE_SUFFIX))))) + +endif + +-include $(KERN_OBJS_DIR)/*.d + +endif + +#===================================================================== + +# Kernel requires its own set of configuration header-files +ifneq ($(kernel_LIBRARIES)$(rtlinux_LIBRARIES)$(kernel_MODULES)$(rtlinux_MODULES)$(kernel_HEADERS)$(rtlinux_HEADERS)$(kernel_HEADERS)$(rtlinux_HEADERS)$(nobase_kernel_HEADERS)$(nobase_rtlinux_HEADERS)$(renamed_kernel_HEADERS)$(renamed_rtlinux_HEADERS),) +KERN_CONFIG_HEADERS_REQUIRED = y +endif + +$(eval $(call omk_pass_template, kernel-lib-pass,$(KERN_OBJS_DIR),KERN_RULE_TEMPLATES=y,$(kernel_LIBRARIES)$(rtlinux_LIBRARIES))) +$(eval $(call omk_pass_template, kernel-mod-pass,$(KERN_OBJS_DIR),KERN_RULE_TEMPLATES=y,$(kernel_MODULES)$(rtlinux_MODULES))) + +kernel-modpost-pass: + +@if [ -e "$(KERN_MODPOST_DIR)/module-changes" -o -e "$(KERN_MODPOST_DIR)/modpost-running" ] ; \ + then \ + $(MAKE) --no-print-directory -C $(KERN_MODPOST_DIR) \ + -f $(SOURCES_DIR)/Makefile KERN_RULE_TEMPLATES=y KERN_MODPOST_PASS=y $(@:%=%-local) ; \ + fi + +check-dir:: + @$(call mkdir_def,$(KERN_BUILD_DIR)) + @$(call mkdir_def,$(KERN_INCLUDE_DIR)) + @$(call mkdir_def,$(KERN_LIB_DIR)) + @$(call mkdir_def,$(KERN_MODULES_DIR)) + @$(call mkdir_def,$(KERN_MODPOST_DIR)) + +$(eval $(call include-pass-template,$(KERN_INCLUDE_DIR),kernel)) +ifeq ($(CONFIG_RTLINUX),y) +$(eval $(call include-pass-template,$(KERN_INCLUDE_DIR),rtlinux)) +endif + +ifdef KERN_RULE_TEMPLATES + +KERN_SOURCES := $(sort $(KERN_SOURCES)) + +#$(warning KERN_SOURCES = $(KERN_SOURCES)) + +$(foreach src,$(filter %.c,$(KERN_SOURCES)),$(eval $(call COMPILE_c_o_kern_template,$(SOURCES_DIR)/$(src),$(src:%.c=%.o),))) + +$(foreach src,$(filter %.cc,$(KERN_SOURCES)),$(eval $(call COMPILE_cc_o_kern_template,$(SOURCES_DIR)/$(src),$(src:%.cc=%.o),))) + +$(foreach src,$(filter %.cxx,$(KERN_SOURCES)),$(eval $(call COMPILE_cc_o_kern_template,$(SOURCES_DIR)/$(src),$(src:%.cxx=%.o),))) + +$(foreach src,$(filter %.cpp,$(KERN_SOURCES)),$(eval $(call COMPILE_cc_o_kern_template,$(SOURCES_DIR)/$(src),$(src:%.cpp=%.o),))) + +$(foreach src,$(filter %.S,$(USER_SOURCES)),$(eval $(call COMPILE_S_o_kern_template,$(SOURCES_DIR)/$(src),$(src:%.S=%.o),))) +endif + +clean-local:: + @echo Cleaning in $(KERN_OBJS_DIR) + @rm -f $(KERN_OBJS_DIR)/*.o \ + $(KERN_OBJS_DIR)/*.d \ + $(KERN_OBJS_DIR)/*.map \ + $(KERN_OBJS_DIR)/*.mod.c \ + $(kernel_MODULES:%=$(KERN_MODPOST_DIR)/%.*) \ + $(LOCAL_CONFIG_H:%=$(KERN_OBJS_DIR)/%) \ + @if [ -e $(KERN_LIB_DIR)/kernel.mk ] ; then \ + touch -t 200001010101 $(KERN_LIB_DIR)/kernel.mk ; \ + fi + +ifndef OMIT_KERNEL_PASSES +# Also make kernel passes if not disabled +default: kernel-lib-pass kernel-pass +endif -- 2.39.2