#                   Version for Linux/RTLinux builds.
#
#
# input variables
# lib_LIBRARIES    .. list of the user-space libraries
# shared_LIBRARIES .. list of the user-space shared libraries
# kernel_LIBRARIES .. list of the kernel-space libraries
# rtlinux_LIBRARIES.. list of the RT-Linux kernel-space libraries
# include_HEADERS  .. list of the user-space public header files
# nobase_include_HEADERS .. public headers copied even with directory part
# renamed_include_HEADERS .. public headers copied to the different target name
# kernel_HEADERS   .. list of the kernel-space public header files
# rtlinux_HEADERS  .. list of the RT-Linux kernel-space public header files
# bin_PROGRAMS     .. list of the require binary programs
# utils_PROGRAMS   .. list of the development utility programs
# test_PROGRAMS    .. list of the testing programs
# kernel_MODULES   .. list of the kernel side modules/applications
# rtlinux_MODULES  .. list of RT-Linux the kernel side modules/applications
# xxx_SOURCES      .. list of specific target sources
# xxx_LIBS         .. list of specific target libraries
# INCLUDES         .. additional include directories and defines for user-space
# 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
# CFLAGS           .. C compiler flags
# CXXFLAGS         .. C++ compiler flags
# CPPFLAGS	   .. C preprocessor flags
# LDFLAGS	   .. linker flags for programs linking

# Hack to check RT-Linux rules
#LINUX_DIR := /home/cvs/ocera/ocera-build/kernel/linux
#RTL_DIR := /home/cvs/ocera/ocera-build/kernel/rtlinux
#CONFIG_RTLINUX = y
#OCERA_DIR := $(shell ( cd -L $(OUTPUT_DIR)/../../.. ; pwd -L ) )

-include $(OUTPUT_DIR)/OCERA_TOP_DIR

BUILD_DIR_NAME = _build
COMPILED_DIR_NAME = _compiled
ifndef GROUP_DIR_NAME
GROUP_DIR_NAME = nogroup
endif

ifdef OCERA_DIR
ifeq ($(wildcard $(OCERA_DIR)/ocera.mk),)
$(warning "ocera.mk" file does not exist. Adapt Makefile.rules for standalone compilation)
$(warning (comment out definition of OCERA_DIR line and optionally select RTL_DIR) )
$(error or go to the ocera/ directory and do 'make' to generate the "ocera.mk" file first, please)
endif
include $(OCERA_DIR)/ocera.mk
KERN_INCLUDE_DIR := $(OCERA_KERNEL_INCLUDES_DIR)
KERN_LIB_DIR     := $(OCERA_KERNEL_LIBRARIES_DIR)
KERN_MODULES_DIR := $(OCERA_MODULES_DIR)
KERN_BUILD_DIR   := $(BUILD_DIR)/kern/$(GROUP_DIR_NAME)
KERN_MODPOST_DIR := $(BUILD_DIR)/kern-modpost
USER_INCLUDE_DIR := $(OCERA_USER_INCLUDES_DIR)
USER_LIB_DIR     := $(OCERA_USER_LIBRARIES_DIR)
USER_UTILS_DIR   := $(TARGET_DIR)/usr/bin
USER_TESTS_DIR   := $(TARGET_DIR)/usr/bin
USER_BIN_DIR     := $(TARGET_DIR)/usr/bin
USER_BUILD_DIR   := $(BUILD_DIR)/user/$(GROUP_DIR_NAME)
#LINUX_DIR        := $(OCERA_DIR)/kernel/linux
#RTL_DIR          := $(OCERA_DIR)/kernel/rtlinux
#CONFIG_FILE      := $(OCERA_DIR)/emdebsys/.config 
ifneq ($(wildcard $(CONFIG_FILE)),)
CONFIG_FILE_OK = y
endif
else # OCERA_DIR
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
USER_INCLUDE_DIR := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/include
USER_LIB_DIR     := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/lib
USER_UTILS_DIR   := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/bin-utils
USER_TESTS_DIR   := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/bin-tests
USER_BIN_DIR     := $(OUTPUT_DIR)/$(COMPILED_DIR_NAME)/bin
USER_BUILD_DIR   := $(OUTPUT_DIR)/$(BUILD_DIR_NAME)/user

ifndef LINUX_VERSION
LINUX_VERSION=$(shell uname -r)
endif
ifndef LINUX_DIR
LINUX_DIR=/lib/modules/$(LINUX_VERSION)/build
endif
endif # OCERA_DIR

ifeq ($(BUILD_OS),)
  # Check for target
  ifeq ($(OS),Windows_NT)
    BUILD_OS := win32
  else
    BUILD_OS := $(shell uname | tr '[A-Z]' '[a-z]' )
    #$(warning BUILD_OS=$(BUILD_OS))
  endif
endif

ifeq ($(TARGET_OS),)
  TARGET_OS := $(BUILD_OS)
endif

export TARGET_OS
export BUILD_OS

LOCAL_BUILD_DIR  = $(USER_OBJS_DIR)

# Assign default values to CFLAGS variable. If the variable is defined
# earlier (i.g. in config.omk), it is not overriden here.
CFLAGS ?= -O2 -Wall
CXXFLAGS ?= -O2 -Wall


CPPFLAGS  += -I $(USER_INCLUDE_DIR)

LOADLIBES += -L$(USER_LIB_DIR) 

LOADLIBES += $(lib_LOADLIBES:%=-l%)

LIB_CPPFLAGS += $(CPPFLAGS)
LIB_CFLAGS   += $(CFLAGS)

ifeq ($(TARGET_OS),win32)
  SOLIB_EXT = dll
else
  SOLIB_EXT = so
  SOLIB_PICFLAGS += -fpic
endif

#vpath %.c $(SOURCES_DIR)
#vpath %.cc $(SOURCES_DIR)
#vpath %.cxx $(SOURCES_DIR)

USER_OBJS_DIR = $(USER_BUILD_DIR)/$(RELATIVE_DIR)
KERN_OBJS_DIR = $(KERN_BUILD_DIR)/$(RELATIVE_DIR)
OMK_WORK_DIR  = $(USER_OBJS_DIR)

.PHONY: dep subdirs clean clean-custom cleandepend check-dir

# Some support to serialize some targets for parallel make
ifneq ($(OMK_SERIALIZE_INCLUDED),y)
include-pass: check-dir
library-pass: include-pass
binary-pass: library-pass link-pseudo-pass
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

override OMK_SERIALIZE_INCLUDED = y
MAKEOVERRIDES := $(filter-out OMK_SERIALIZE_INCLUDED=n,$(MAKEOVERRIDES))
endif

# Checks for OMK tester
ifdef OMK_TESTSROOT
default-config-pass-check include-pass-check:
library-pass-check binary-pass-check:
	@[ -x "$(shell which $(CC))" ] || $(call canttest,Cannot find compiler: $(CC))
endif

#=====================================================================
# User-space rules and templates to compile programs, libraries etc.

ifdef USER_RULE_TEMPLATES

USER_SOURCES2OBJS = .o/.c .o/.cc .o/.cxx .o/.S .o/.o

USER_SOURCES2OBJSLO = .lo/.c .lo/.cc .lo/.cxx .lo/.S .lo/.lo

#%.lo: %.c
#	$(CC) -o $@ $(LCFLAGS) -c $<

c_o_COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -DOMK_FOR_USER

cc_o_COMPILE = $(CXX) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) -DOMK_FOR_USER

S_o_COMPILE = $(CC) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_CPPFLAGS) \
	$(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $(ASFLAGS) -DOMK_FOR_USER

idl_COMPILE = $(IDL_COMPILER)

# Check GCC version for user build
ifndef CC_MAJOR_VERSION
CC_MAJOR_VERSION := $(shell $(CC) -dumpversion | sed -e 's/\([^.]\)\..*/\1/')
endif
# Prepare suitable define for dependency building
ifeq ($(CC_MAJOR_VERSION),2)
CC_DEPFLAGS = -Wp,-MD,"$@.d.tmp"
else
CC_DEPFLAGS = -MT $@ -MD -MP -MF "$@.d.tmp"
endif


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


# Syntax: $(call COMPILE_cc_o_template,<source>,<target>,<additional c-flags>)
define COMPILE_cc_o_template
$(2): $(1) $$(GEN_HEADERS)
	@$(QUIET_CMD_ECHO) "  CXX     $$@"
	$(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) $$(GEN_HEADERS)
	@$(QUIET_CMD_ECHO) "  AS      $$@"
	$(Q) if $$(S_o_COMPILE) -D__ASSEMBLY__ $$(CC_DEPFLAGS) $(3) -o $$@ -c $$< ; \
	then mv -f "$$@.d.tmp" "$$@.d" ; \
	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) $$($(2)_IDLFLAGS) $(1)
endef


# Syntax: $(call PROGRAM_template,<dir>,<executable-name>,<executable-suffix>,<linker-sript>)
# FIXME: ???????? asi je tu blbej komentar
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)$(3): $$($(1)_OBJS)
	@$(QUIET_CMD_ECHO) "  LINK    $$@"
	$(Q) $$(if $$(filter %.cc,$$($(1)_SOURCES:%.cxx=%.cc)),$$(CXX),$$(CC)) \
	  $$($(1)_OBJS) $$($(1)_LIBS:%=-l%) $$(LOADLIBES) $$(LDFLAGS) -Wl,-rpath-link,$(USER_LIB_DIR) -Wl,-Map,$(USER_OBJS_DIR)/$(1).exe.map -o $$@
	@echo "$(2)/$(1)$(3): \\" >$(USER_OBJS_DIR)/$(1).exe.d
	@sed -n -e 's|^LOAD \(.*\)$$$$|  \1  \&|p' $(USER_OBJS_DIR)/$(1).exe.map|tr '&' '\134'  >>$(USER_OBJS_DIR)/$(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

.PHONY: FORCE

# 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)

$(OMK_WORK_DIR)/lib$(1).$(SOLIB_EXT).omkvar: $$($(1)_OBJSLO) FORCE
	$(Q)echo '$(1)_objslo += $$$$(addprefix $(USER_OBJS_DIR)/,$$($(1)_OBJSLO))' > $$@.tmp; \
	    echo '$(1)_libs += $$($(1)_LIBS) $$(lib_LOADLIBES)' >> $$@.tmp; \
	    echo 'shared_libs := $$$$(sort $(1) $$$$(shared_libs))' >> $$@.tmp; \
	    if cmp -s $$@.tmp $$@; then rm $$@.tmp; else mv $$@.tmp $$@; fi
endef

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

binary-pass-local: $(bin_PROGRAMS:%=$(USER_BIN_DIR)/%$(EXE_SUFFIX)) $(utils_PROGRAMS:%=$(USER_UTILS_DIR)/%$(EXE_SUFFIX)) $(test_PROGRAMS:%=$(USER_TESTS_DIR)/%$(EXE_SUFFIX))

# 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),$(USER_UTILS_DIR),$(EXE_SUFFIX))))

$(foreach prog,$(test_PROGRAMS),$(eval $(call PROGRAM_template,$(prog),$(USER_TESTS_DIR),$(EXE_SUFFIX))))

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

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

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

-include $(USER_OBJS_DIR)/*.d

endif # USER_RULE_TEMPLATES

.PHONY: link-pseudo-pass
link-pseudo-pass:
	$(Q)$(MAKE) $(NO_PRINT_DIRECTORY) -C $(USER_BUILD_DIR) -f $(SOURCESDIR_MAKEFILE) link-shared-libs

ifeq ($(MAKECMDGOALS),link-shared-libs)

# Syntax: $(call solib_link_template,<library-name>)
define solib_link_template
$(1)_shared_libs = $$(patsubst %,$(USER_LIB_DIR)/lib%.$(SOLIB_EXT),$$(filter $$(shared_libs),$$($(1)_libs)))
#$$(warning $(1)_shared_libs = $$($(1)_shared_libs))
$(USER_LIB_DIR)/lib$(1).$(SOLIB_EXT): $$($(1)_shared_libs) $$($(1)_objslo)
	@$(QUIET_CMD_ECHO) "  LINK    $$@"
	$(Q)$(CC) --shared -Xlinker -soname=lib$(1).$(SOLIB_EXT) -o $$@ $$($(1)_objslo) $$(LOADLIBES) $$($(1)_libs:%=-l%)
endef

-include $(shell true; find $(USER_BUILD_DIR) -name 'lib*.omkvar') # `true' is a hack for MinGW
#$(warning $(shared_libs))
$(foreach lib,$(shared_libs),$(eval $(call solib_link_template,$(lib))))

.PHONY: link-shared-libs
link-shared-libs: $(shared_libs:%=$(USER_LIB_DIR)/lib%.$(SOLIB_EXT))
endif # link-shared-libs

#=====================================================================
# 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
S_o_kern_COMPILE = $(KERN_CC) $(kernel_INCLUDES) -idirafter $(kern_GCCLIB_DIR)/include $(LINUX_CPPFLAGS) $(LINUX_AFLAGS) $(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=\"
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 | 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

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 := $$(sort $$($(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>@\
#	#include <linux/module.h>@\
#	#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,5))@\
#	#include <linux/vermagic.h>@\
#	#include <linux/compiler.h>@\
#	@\
#	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
	@sed -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 := $$(sort $$($(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]  $$@"
	$(Q) $$(cc_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

$(eval $(call omk_pass_template, library-pass,$(USER_OBJS_DIR),USER_RULE_TEMPLATES=y,$(lib_LIBRARIES)$(shared_LIBRARIES)))
$(eval $(call omk_pass_template, binary-pass, $(USER_OBJS_DIR),USER_RULE_TEMPLATES=y,$(bin_PROGRAMS)$(utils_PROGRAMS)$(test_PROGRAMS)))

$(eval $(call omk_pass_template,clean,$(USER_OBJS_DIR),,always))
$(eval $(call omk_pass_template,install,$(USER_OBJS_DIR),,always))
$(eval $(call omk_pass_template,include-pass,$(USER_OBJS_DIR),USER_RULE_TEMPLATES=y,always))

check-dir::
	@$(call mkdir_def,$(USER_BUILD_DIR))
	@$(call mkdir_def,$(KERN_BUILD_DIR))
	@$(call mkdir_def,$(USER_INCLUDE_DIR))
	@$(call mkdir_def,$(KERN_INCLUDE_DIR))
	@$(call mkdir_def,$(USER_LIB_DIR))
	@$(call mkdir_def,$(KERN_LIB_DIR))
	@$(call mkdir_def,$(USER_BIN_DIR))
	@$(call mkdir_def,$(USER_UTILS_DIR))
	@$(call mkdir_def,$(USER_TESTS_DIR))
	@$(call mkdir_def,$(KERN_MODULES_DIR))
	@$(call mkdir_def,$(KERN_MODPOST_DIR))

install-local:			# TODO

$(eval $(call include-pass-template,$(USER_INCLUDE_DIR),include))
$(eval $(call include-pass-template,$(KERN_INCLUDE_DIR),kernel))
ifeq ($(CONFIG_RTLINUX),y)
$(eval $(call include-pass-template,$(KERN_INCLUDE_DIR),rtlinux))
endif


ifdef USER_RULE_TEMPLATES

# User-space static libraries and applications object files

USER_SOURCES := $(sort $(USER_SOURCES))

USER_GEN_SOURCES := $(sort $(USER_GEN_SOURCES))

#$(warning USER_SOURCES = $(USER_SOURCES))

$(foreach src,$(filter %.c,$(USER_SOURCES)),$(eval $(call COMPILE_c_o_template,$(SOURCES_DIR)/$(src),$(src:%.c=%.o),)))

$(foreach src,$(filter %.cc,$(USER_SOURCES)),$(eval $(call COMPILE_cc_o_template,$(SOURCES_DIR)/$(src),$(src:%.cc=%.o),)))

$(foreach src,$(filter %.cxx,$(USER_SOURCES)),$(eval $(call COMPILE_cc_o_template,$(SOURCES_DIR)/$(src),$(src:%.cxx=%.o),)))

$(foreach src,$(filter %.S,$(USER_SOURCES)),$(eval $(call COMPILE_S_o_template,$(SOURCES_DIR)/$(src),$(src:%.S=%.o),)))

$(foreach src,$(filter %.c,$(USER_GEN_SOURCES)),$(eval $(call COMPILE_c_o_template,$(src),$(src:%.c=%.o),)))

# User-space shared libraries object files

SOLIB_SOURCES := $(sort $(SOLIB_SOURCES))

SOLIB_GEN_SOURCES := $(sort $(SOLIB_GEN_SOURCES))

#$(warning SOLIB_SOURCES = $(SOLIB_SOURCES))
#$(warning SOLIB_GEN_SOURCES = $(SOLIB_GEN_SOURCES))

$(foreach src,$(filter %.c,$(SOLIB_SOURCES)),$(eval $(call COMPILE_c_o_template,$(SOURCES_DIR)/$(src),$(src:%.c=%.lo),$(SOLIB_PICFLAGS))))

$(foreach src,$(filter %.cc,$(SOLIB_SOURCES)),$(eval $(call COMPILE_cc_o_template,$(SOURCES_DIR)/$(src),$(src:%.cc=%.lo),$(SOLIB_PICFLAGS))))

$(foreach src,$(filter %.cxx,$(SOLIB_SOURCES)),$(eval $(call COMPILE_cc_o_template,$(SOURCES_DIR)/$(src),$(src:%.cxx=%.lo),$(SOLIB_PICFLAGS))))

$(foreach src,$(filter %.S,$(SOLIB_SOURCES)),$(eval $(call COMPILE_S_o_template,$(SOURCES_DIR)/$(src),$(src:%.S=%.lo),$(SOLIB_PICFLAGS))))

$(foreach src,$(filter %.c,$(SOLIB_GEN_SOURCES)),$(eval $(call COMPILE_c_o_template,$(src),$(src:%.c=%.lo),$(SOLIB_PICFLAGS))))

# IDL compilation

USER_IDLS := $(sort $(USER_IDLS))

$(foreach src,$(filter %.idl,$(USER_IDLS)),$(eval $(call COMPILE_idl_template,$(SOURCES_DIR)/$(src),$(src:%.idl=%))))

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 %.S,$(USER_SOURCES)),$(eval $(call COMPILE_S_o_kern_template,$(SOURCES_DIR)/$(src),$(src:%.S=%.o),)))
endif

clean-local: clean-custom
	@echo Cleaning in $(KERN_OBJS_DIR) and $(USER_OBJS_DIR)
	@rm -f $(KERN_OBJS_DIR)/*.o $(USER_OBJS_DIR)/*.[och] $(USER_OBJS_DIR)/*.lo\
	       $(KERN_OBJS_DIR)/*.d $(USER_OBJS_DIR)/*.d \
	       $(KERN_OBJS_DIR)/*.map $(USER_OBJS_DIR)/*.map \
	       $(KERN_OBJS_DIR)/*.mod.c \
	       $(kernel_MODULES:%=$(KERN_MODPOST_DIR)/%.*) \
	       $(LOCAL_CONFIG_H:%=$(KERN_OBJS_DIR)/%) \
	       $(LOCAL_CONFIG_H:%=$(USER_OBJS_DIR)/%)
	@if [ -e $(KERN_LIB_DIR)/kernel.mk ] ; then \
	    touch -t 200001010101 $(KERN_LIB_DIR)/kernel.mk ; \
	fi

include-pass-submakes: extra-rules-subdirs

# We must go to EXTRA_RULES_SUBDIRS beofre going to any other
# directory, since the executables compiled in EXTRA_RULES_SUBDIRS
# might be needed there.
include-pass-this-dir $(foreach subdir,$(SUBDIRS),include-pass-$(subdir)-subdir): extra-rules-subdirs

default: include-pass library-pass binary-pass
ifndef OMIT_KERNEL_PASSES
# Also make kernel passes if not disabled
default: kernel-lib-pass kernel-pass
endif

# Local Variables:
# mode:makefile
# End: