Makefile.rules
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 #
 # $Id$
 #
 #
 # common Makefile rules, included by main Makefile & the  modules
 #
 
 #
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 # Uses: NAME, ALLDEP, CC, CFLAGS, C_DEFS, DEFS, C_INCLUDES, INCLUDES, LIBS, 
 #       MKDEP, auto_gen, 
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 # auto_gen_others, depends, objs, extra_objs, static_modules, 
 # static_modules_path, LD_RPATH
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 # (all this must  be defined previously!,  see Makefile.defs & Makefile)
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 # Optional: SER_LIBS - list of ser libraries that will be automatically
 #  built if necessary. Format: path/shortname, where shortname is the 
 #  name passed to -l (e.g. for libprint.so the shortname is print)
 #
 # History:
 # --------
 #  2007-03-29  set rpath differently for make install
 #              automatically build listed SER_LIBS if needed (andrei)
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 #  2008-06-23  automatically rebuild if make time defines or includes
 #              changed (via makecfg.lst)
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 #  2009-03-10  support for C_DEFS and C_INCLUDES (DEFS and INCLUDES are now
 #              used only for "temporary" defines/includes inside modules or
 #              libs, C_DEFS and C_INCLUDES are used for the common stuff)
 #              (andrei)
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 # check if the saved cfg corresponds with the current one
 # (if not rebuild everything)
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 ifeq (,$(filter $(nodep_targets),$(MAKECMDGOALS)))
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 -include makecfg.lst
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 ifneq ($(strip $(C_DEFS) $(DEFS)), $(strip $(CFG_DEFS)))
 #$(warning different defs: <$(strip $(C_DEFS) $(DEFS))> != )
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 #$(warning               : <$(strip $(CFG_DEFS))>)
 $(shell rm -f makecfg.lst)
 endif
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 ifneq ($(strip $(C_INCLUDES) $(INCLUDES)), $(strip $(CFG_INCLUDES)))
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 $(shell rm -f makecfg.lst)
 endif
 endif
 
 ALLDEP+=makecfg.lst
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 #implicit rules
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 %.o:%.c  $(ALLDEP)
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 	$(CC) $(CFLAGS) $(C_INCLUDES) $(INCLUDES) $(C_DEFS) $(DEFS) -c $< -o $@
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 %.d: %.c $(ALLDEP)
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 	@set -e; $(MKDEP) $(CFLAGS) $(C_INCLUDES) $(INCLUDES) $(C_DEFS) $(DEFS) $<\
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 	    |  sed 's#\(\($(*D)/\)\{0,1\}$(*F)\)\.o[ :]*#$*.o $@ : #g' > $@; \
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 	    test -s $@ || ( rm -f $@; false )
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 # use RPATH and SER_LIBS if needed (make install and the module depends
 # on some ser libs)
 
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 ifneq	($(SER_LIBS),)
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 # abspath & realpath don't work on make <= 3.80
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 SER_LIBS_DIRS:=$(dir $(SER_LIBS))
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 ifneq	(,$(filter install install% %install, $(MAKECMDGOALS)))
 lib_compile_for_install=yes
 expected_lib_ipath=$(lib_target)
 else
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 lib_compile_for_install=$(compile_for_install)
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 # function: expected_lib_ipath ser_lib_dir
 expected_lib_ipath=$(1)
 endif
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 ifneq	($(LD_RPATH),)
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 ifneq	(,$(filter install install% %install, $(MAKECMDGOALS)))
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 SER_RPATH_LST:=$(lib_target)
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 else
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 # realpath is not supported in make 3.80 or older
 ifeq (,$(filter-out 3.80 3.80.%,$(MAKE_VERSION)))
 fullpath=$(shell cd $(1); pwd)
 else
 fullpath=$(realpath $(1))
 endif
 
 SER_RPATH_LST:=$(call fullpath,$(dir $(SER_LIBS)))
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 endif
 ifneq	($(strip $(SER_RPATH_LST)),)
 SER_RPATH:=$(addprefix $(LD_RPATH),$(SER_RPATH_LST))
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 endif
 endif
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 ifeq ($(OS), darwin)
 SER_IPATH_LST:=$(addsuffix /libiname.lst,$(SER_LIBS_DIRS))
 #$(warning $(NAME) DARWIN, SER_LIBS=$(SER_LIBS), $(SER_LIBS_DIRS), ipath_lst=$(SER_IPATH_LST))
 endif
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 endif
 
 ALL_LIBS=$(LIBS)
 
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 ifeq	(,$(filter clean %clean clean% proper %proper proper%, $(MAKECMDGOALS)))
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 ifneq ($(SER_LIBS),)
 -include librpath.lst
 ifneq ($(SER_RPATH_LST), $(LIB_RPATH_LST))
 $(shell rm -f librpath.lst)
 endif
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 endif
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 SER_LIBS_DEPS:= \
 	$(foreach l, $(SER_LIBS), $(dir $l)$(LIB_PREFIX)$(notdir $l)$(LIB_SUFFIX))
 ALL_LIBS+=$(foreach l, $(SER_LIBS), -L$(dir $l) -l$(notdir $l))
 
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 $(NAME): librpath.lst $(SER_LIBS_DEPS)
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 $(SER_LIBS_DEPS): FORCE
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 	$(MAKE) -wC $(dir $@)  compile_for_install=$(lib_compile_for_install)
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 .PHONY: FORCE
 FORCE:
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 ifneq ($(SER_IPATH_LST),)
 
 $(NAME): $(SER_IPATH_LST) 
 
 $(SER_IPATH_LST): FORCE
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 	@if grep \
 		"COMPILED_INAME:=$(call expected_lib_ipath,$(shell cd $(@D); pwd))" \
 		$(@) 1>/dev/null 2>/dev/null ; \
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 	then :; \
 	else \
 		echo "re-building $(@D)" ; \
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 		$(MAKE) -wC $(@D) compile_for_install=$(lib_compile_for_install) ; \
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 	fi
 
 .PHONY: FORCE-BUILD-LIBS
 FORCE-BUILD-LIBS:
 	@for r in $(SER_LIBS_DIRS) ; do \
 		echo building lib $$r; \
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 		$(MAKE) -wC $$r compile_for_install=$(lib_compile_for_install) ; \
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 	done
 
 endif
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 endif
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 # normal rules
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 $(NAME): $(objs) $(ALLDEP)
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 	$(LD) $(LDFLAGS) $(objs) $(extra_objs) $(ALL_LIBS) $(SER_RPATH) -o $(NAME)
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 librpath.lst: $(ALLDEP)
 	@echo LIB_RPATH_LST:=$(SER_RPATH_LST) >librpath.lst
 
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 makecfg.lst:
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 	@echo CFG_DEFS:=\
 		$(subst ',\', $(subst ",\", $(strip $(C_DEFS) $(DEFS)))) >>$@
 	@echo CFG_INCLUDES:=\
 		$(subst ',\', $(subst ",\", $(strip $(C_INCLUDES) $(INCLUDES)))) >>$@
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 .PHONY: all
 all: $(NAME) modules
 
 .PHONY: dep
 dep: $(depends)
 
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 .PHONY: static
 static: $(objs)
 
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 .PHONY: clean
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 clean: 
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 	-@rm -f $(objs) $(NAME) $(objs:.o=.il) librpath.lst 2>/dev/null
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 	-@for r in $(modules) $(static_modules_path) "" ; do \
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 		if [ -d "$$r" ]; then \
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 			echo "module $$r" ; \
 			$(MAKE) -C $$r clean ; \
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 			$(MAKE) -C $$r/doc clean ; \
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 		fi ; \
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 	done 
 	@if [ -n "$(modules)" ]; then \
 		for r in $(utils_compile) "" ; do \
 			if [ -d "$$r" ]; then \
 				 $(MAKE) -C $$r clean ; \
 			fi ; \
 		done \
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 	fi
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 .PHONY: proper
 .PHONY: distclean
 .PHONY: realclean
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 proper realclean distclean: mrproper
 
 mrproper: clean 
 	-@rm -f $(depends) $(auto_gen) $(auto_gen_others) \
 			makecfg.lst 2>/dev/null
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 	-@for r in $(modules) "" ; do \
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 		if [ -d "$$r" ]; then \
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 			$(MAKE) -C $$r proper ; \
 			$(MAKE) -C $$r/doc proper ; \
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 		fi ; \
 	done 
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 	@if [ -n "$(modules)" ]; then \
 		for r in $(utils_compile) "" ; do \
 			if [ -d "$$r" ]; then \
 				 $(MAKE) -C $$r proper ; \
 			fi ; \
 		done \
 	fi
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 .PHONY: maintainer-clean
 maintainer-clean: distclean
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 	-rm -f TAGS tags *.dbg .*.swp
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 	-@for r in $(modules) "" ; do \
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 		if [ -d "$$r" ]; then \
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 			$(MAKE) -C $$r maintainer-clean; \
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 		fi ; \
 	 done 
 
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 .PHONY: doxygen
 doxygen:
 	-@mkdir -p $(doxygen_dir)
 	doxygen ./$(COREPATH)/doc/doxygen/ser.doxygen
 
 
 .PHONY: clean_doxygen
 clean_doxygen:
 	-@rm -rf $(doxygen_dir)/{xml,man,rtf,latex,html}
 	-@rmdir --ignore-fail-on-non-empty -p $(doxygen_dir) || true
 
 
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 .PHONY: TAGS
 TAGS:
 	$(MKTAGS) 
 	
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 ifeq (,$(MAKECMDGOALS))
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 -include $(depends)
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 else
 ifeq (,$(strip $(nodep_targets)))
 include Makefile.targets
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 endif
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 ifneq (,$(filter-out $(nodep_targets),$(MAKECMDGOALS)))
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 -include $(depends)
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 endif
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 endif # ifeq (,$(MAKECMDGOALS))