makefile.rules

一个linux下rs485驱动程序的源代码

	then mv -f "$$@.d.tmp" "$$@.d" ; \
	else rm -f "$$@.d.tmp" ; exit 1; \
	fi
endef


# Syntax: $(call COMPILE_cc_o_template,<source>,<target>,<additional c-flags>)
define COMPILE_cc_o_template
$(2): $(1) $(LOCAL_CONFIG_H) $$(GEN_HEADERS)
	@$(QUIET_CMD_ECHO) "  CXX     $$@"
	$(Q) if $$(cc_o_COMPILE) $$(CC_DEPFLAGS) $(3) -o $$@ -c $$< ; \
	then mv -f "$$@.d.tmp" "$$@.d" ; \
	else rm -f "$$@.d.tmp" ; exit 1; \
	fi
endef


# Syntax: $(call COMPILE_S_o_template,<source>,<target>,<additional c-flags>)
define COMPILE_S_o_template
$(2): $(1) $(LOCAL_CONFIG_H) $$(GEN_HEADERS)
        @$(QUIET_CMD_ECHO) "  AS      $$@"
        $(Q) if $$(S_o_COMPILE) -D__ASSEMBLY__ $$(CC_DEPFLAGS) $(3) -o $$@ -c $$< ; \
        then if [ -e "$$@.d.tmp" ] ; then mv -f "$$@.d.tmp" "$$@.d" ; fi ; \
        else rm -f "$$@.d.tmp" ; exit 1; \
        fi
endef


# Syntax: $(call CMETRIC_o_h_template,<object_file>,<target_header>)
define CMETRIC_o_h_template
$(2): $(1)
	@$(QUIET_CMD_ECHO) "  CMETRIC $$@"
	$(Q)if [ -n `dirname $$@` ] ; then \
	      if [ ! -e `dirname $$@` ] ; then \
	        mkdir -p `dirname $$@` ; fi ; fi
	$(Q)echo >$$@ '/* Automatically generated from $$< */'
	$(Q)echo >>$$@ '/* Conditionals to control compilation */'
	$(Q)set -o pipefail ; $(NM) $$< \
		| sed -n 's/^ *0*\(0[0-9A-Fa-f]*\) *A *_cmetric2cond_\([A-Za-z_0-9]*\) */#define \2 0x\1/p' \
		| sort >>$$@
	$(Q)echo >>$$@ '/* Defines from the values defined to symbols */'
	$(Q)set -o pipefail ; $(NM) $$< \
		| sed -n 's/^ *0*\(0[0-9A-Fa-f]*\) *A *_cmetric2def_\([A-Za-z_0-9]*\) */#define \2 0x\1/p' \
		| sort >>$$@
endef



define COMPILE_idl_template
$(2).c $(2)-stubs.c $(2)-skels.c $(2)-common.c $(2).h: $(1)
	@$(QUIET_CMD_ECHO) "  IDL     $$@"
	$(Q) $$(idl_COMPILE) $(1)
endef


# Syntax: $(call PROGRAM_template,<dir>,<executable-name>,<executable-suffix>,<linker-sript>)
define PROGRAM_template

USER_IDLS  += $$($(1)_SERVER_IDL) $$($(1)_CLIENT_IDL) $$($(1)_IDL)
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_SERVER_IDL:%.idl=%-skels.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_SERVER_IDL:%.idl=%-common.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_CLIENT_IDL:%.idl=%-stubs.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_CLIENT_IDL:%.idl=%-common.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_IDL:%.idl=%.c))
USER_GEN_SOURCES += $$($(1)_GEN_SOURCES)

$(foreach x, $(USER_SOURCES2OBJS),
$(1)_OBJS += $$(patsubst %$(notdir $(x)),%$(dir $(x)),$$(filter %$(notdir $(x)),\
		$$($(1)_SOURCES) $$($(1)_GEN_SOURCES)))
)
$(1)_OBJS := $$(sort $$($(1)_OBJS:%/=%))

USER_OBJS  += $$($(1)_OBJS)
USER_SOURCES += $$($(1)_SOURCES)

$(2)/$(1): $$($(1)_OBJS)
	@$(QUIET_CMD_ECHO) "  LINK    $$@"
	$(Q) $$(shell if [ -z "$$(filter %.cc,$$($(1)_SOURCES:%.cxx=%.cc))" ] ; then echo $$(CC) ; else echo $$(CXX) ; fi) \
	  $$($(1)_OBJS) $$($(1)_LIBS:%=-l%) $$(LOADLIBES) $$(LDFLAGS) -Wl,-Map,$(USER_OBJS_DIR)/$(1).exe.map -o $(2)/$(1)
	@echo "$(2)/$(1): \\" >$(USER_OBJS_DIR)/$(1).exe.d
	@sed -n -e 's/^LOAD \(.*\)$$$$/  \1  \\/p' $(USER_OBJS_DIR)/$(1).exe.map  >>$(USER_OBJS_DIR)/$(1).exe.d
	@echo >>$(USER_OBJS_DIR)/$(1).exe.d
endef


# Syntax: $(call LIBRARY_template,<library-name>)
define LIBRARY_template

USER_IDLS  += $$($(1)_SERVER_IDL) $$($(1)_CLIENT_IDL) $$($(1)_IDL)
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_SERVER_IDL:%.idl=%-skels.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_SERVER_IDL:%.idl=%-common.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_CLIENT_IDL:%.idl=%-stubs.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_CLIENT_IDL:%.idl=%-common.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_IDL:%.idl=%.c))
USER_GEN_SOURCES += $$($(1)_GEN_SOURCES)

$(foreach x, $(USER_SOURCES2OBJS),
$(1)_OBJS += $$(patsubst %$(notdir $(x)),%$(dir $(x)),$$(filter %$(notdir $(x)),\
		$$($(1)_SOURCES) $$($(1)_GEN_SOURCES)))
)
$(1)_OBJS := $$(sort $$($(1)_OBJS:%/=%))

USER_OBJS  += $$($(1)_OBJS)
USER_SOURCES += $$($(1)_SOURCES)

$(USER_LIB_DIR)/lib$(1).a: $$($(1)_OBJS)
	@$(QUIET_CMD_ECHO) "  AR      $$@"
	$(Q) $(AR) rcs $$@ $$^
endef


# Syntax: $(call SOLIB_template,<library-name>)
define SOLIB_template

USER_IDLS  += $$($(1)_SERVER_IDL) $$($(1)_CLIENT_IDL) $$($(1)_IDL)
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_SERVER_IDL:%.idl=%-skels.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_SERVER_IDL:%.idl=%-common.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_CLIENT_IDL:%.idl=%-stubs.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_CLIENT_IDL:%.idl=%-common.c))
$(1)_GEN_SOURCES += $$(filter %.c,$$($(1)_IDL:%.idl=%.c))
SOLIB_GEN_SOURCES += $$($(1)_GEN_SOURCES)

$(foreach x, $(USER_SOURCES2OBJSLO),
$(1)_OBJSLO += $$(patsubst %$(notdir $(x)),%$(dir $(x)),$$(filter %$(notdir $(x)),\
		$$($(1)_SOURCES) $$($(1)_GEN_SOURCES)))
)
$(1)_OBJSLO := $$(sort $$($(1)_OBJSLO:%/=%))

SOLIB_OBJS  += $$($(1)_OBJSLO)
SOLIB_SOURCES += $$($(1)_SOURCES)

$(USER_LIB_DIR)/lib$(1).$(SOLIB_EXT): $$($(1)_OBJSLO)
	@$(QUIET_CMD_ECHO) "  LINK    $$@"
	$(Q) $(LD) --shared --soname=lib$(1).$(SOLIB_EXT) -o $$@ $$^ $$(LOADLIBES) $$(LDFLAGS) 
endef



library-pass-local: $(addprefix $(USER_INCLUDE_DIR)/,$(cmetric_include_HEADERS)) \
		    $(lib_LIBRARIES:%=$(USER_LIB_DIR)/lib%.a) $(shared_LIBRARIES:%=$(USER_LIB_DIR)/lib%.$(SOLIB_EXT))

binary-pass-local: $(bin_PROGRAMS:%=$(USER_BIN_DIR)/%)

utils-pass-local: $(utils_PROGRAMS:%=$(USER_UTILS_DIR)/%)

# Special rules for CMETRIC generated headers

$(foreach cmetrh,$(cmetric_include_HEADERS),$(eval $(call COMPILE_c_o_template,\
		$(SOURCES_DIR)/$($(basename $(notdir $(cmetrh)))_CMETRIC_SOURCES),\
		$($(basename $(notdir $(cmetrh)))_CMETRIC_SOURCES:%.c=%.o),)))
$(foreach cmetrh,$(cmetric_include_HEADERS),$(eval $(call CMETRIC_o_h_template,\
		$($(basename $(notdir $(cmetrh)))_CMETRIC_SOURCES:%.c=%.o),\
		$(addprefix $(USER_INCLUDE_DIR)/,$(cmetrh)))))

GEN_HEADERS+=$(cmetric_include_HEADERS:%=$(USER_INCLUDE_DIR)/%)

GEN_HEADERS+=$(filter %.h,$(USER_IDLS:%.idl=%.h))

# Generate rules for compilation of programs and libraries

$(foreach prog,$(utils_PROGRAMS),$(eval $(call PROGRAM_template,$(prog),$(USER_UTILS_DIR))))

$(foreach prog,$(bin_PROGRAMS),$(eval $(call PROGRAM_template,$(prog),$(USER_BIN_DIR))))

$(foreach lib,$(lib_LIBRARIES),$(eval $(call LIBRARY_template,$(lib))))

$(foreach lib,$(shared_LIBRARIES),$(eval $(call SOLIB_template,$(lib))))

-include $(USER_OBJS_DIR)/*.d

endif

#=====================================================================
# 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 | sed -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 $(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 | sed -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
KERN_EXE_SUFFIX := $(LINUX_MODULE_EXT)
KERN_LDFLAGS = $(LINUX_LDFLAGS)
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=\"
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 | sed -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

define COMPILE_c_o_kern_template

$(2): $(1) $(LOCAL_CONFIG_H)
	@$(QUIET_CMD_ECHO) "  CC [K]  $$@"
	$(Q) if $$(c_o_kern_COMPILE) $$(kern_CC_DEPFLAGS) $(3) -D"KBUILD_BASENAME=$(KERN_MQ)$(notdir $(basename $(1)))$(KERN_MQ)" \
	-o $$@ -c $$< ; \
	then mv -f "$$@.d.tmp" "$$@.d" ; \
	else rm -f "$$@.d.tmp" ; exit 1; \
	fi
endef



define COMPILE_cc_o_kern_template

$(2): $(1) $(LOCAL_CONFIG_H)
	@$(QUIET_CMD_ECHO) "  CXX [K] $$@"
	$(Q) if $$(cc_o_kern_COMPILE) $$(kern_CC_DEPFLAGS) $(3) -D"KBUILD_BASENAME=$(KERN_MQ)$(notdir $(basename $(1)))$(KERN_MQ)" \
	-o $$@ -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 := $$(sort $$($(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 <linux/version.h>@\