1 # LOCAL_CONFIG_H .. name of local config.h file generated from values
2 # of options defined in the current directory
3 # config_include_HEADERS .. names of global config files (possibly
5 # xxx_DEFINES .. list of config directives to be included in
6 # config header file of the name <somedir>/xxx.h
7 # DOXYGEN .. if non-empty, generated headers includes Doxygen's @file
8 # command, so it is possible to document config
10 # docs_TARGETS .. list of targets for building documentation
12 # Syntax: $(call BUILD_CONFIG_H_template,<stamp_dir>,<header_file_path>,<list_of_options_to_export>,<header_barrier>)
13 define BUILD_CONFIG_H_template
15 $(addprefix $(1)/,$(notdir $(addsuffix .stamp,$(2)))) : $(CONFIG_FILES)
16 @$(QUIET_CMD_ECHO) " CONFGEN $$(@:%.stamp=%)"
17 @if [ ! -d `dirname $(2).tmp` ] ; then \
18 mkdir -p `dirname $(2).tmp` ; fi
19 @echo "/* Automatically generated from */" > "$(2).tmp"
20 @echo "/* config files: $$(^:$(OUTPUT_DIR)/%=%) */" >> "$(2).tmp"
21 $(if $(DOXYGEN),@echo "/** @file */" >> "$(2).tmp")
22 @echo "#ifndef $(4)" >> "$(2).tmp"
23 @echo "#define $(4)" >> "$(2).tmp"
24 @( $(foreach x, $(shell echo '$($(3))' | tr 'x\t ' 'x\n\n' | sed -e 's/^\([^ =]*\)\(=[^ ]\+\|\)$$/\1/' ), \
25 echo '$(x).$($(x))' ; ) echo ; ) | \
26 sed -e '/^[^.]*\.n$$$$/d' -e '/^[^.]*\.$$$$/d' -e 's/^\([^.]*\)\.[ym]$$$$/\1.1/' | \
27 sed -n -e 's/^\([^.]*\)\.\(.*\)$$$$/#define \1 \2/p' \
29 @echo "#endif /*$(4)*/" >> "$(2).tmp"
31 @if cmp --quiet "$(2).tmp" "$(2)" ; then rm "$(2).tmp"; \
32 else mv "$(2).tmp" "$(2)" ; \
33 echo "Updated configuration $(2)" ; fi
39 # This must be declared after the default cflags are assigned!
40 # Override is used to override command line assignemnt.
41 override CFLAGS += -I $(USER_OBJS_DIR)
42 override kernel_INCLUDES += -I $(KERN_OBJS_DIR)
43 $(eval $(call BUILD_CONFIG_H_template,$(USER_OBJS_DIR),$(USER_OBJS_DIR)/$(LOCAL_CONFIG_H),default_CONFIG,_LOCAL_CONFIG_H) )
47 # Special rules for configuration exported headers
49 #FIXME: The directory for headers should not be specified here.
50 $(foreach confh,$(config_include_HEADERS),$(eval $(call BUILD_CONFIG_H_template,$(USER_OBJS_DIR),$(addprefix $(USER_INCLUDE_DIR)/,$(confh)),$(basename $(notdir $(confh)))_DEFINES,\
51 _$(basename $(notdir $(confh)))_H \
54 config_h_stamp_files = $(addprefix $(USER_OBJS_DIR)/,$(notdir $(addsuffix .stamp,$(config_include_HEADERS) $(LOCAL_CONFIG_H))))
56 # Add some hooks to standard passes
57 include-pass-local: $(config_h_stamp_files)
59 ifneq ($(KERN_CONFIG_HEADERS_REQUIRED),)
62 $(eval $(call BUILD_CONFIG_H_template,$(KERN_OBJS_DIR),$(KERN_OBJS_DIR)/$(LOCAL_CONFIG_H),default_CONFIG,_LOCAL_CONFIG_H) )
65 $(foreach confh,$(config_include_HEADERS),$(eval $(call BUILD_CONFIG_H_template,$(KERN_OBJS_DIR),$(addprefix $(KERN_INCLUDE_DIR)/,$(confh)),$(basename $(notdir $(confh)))_DEFINES,\
66 _$(basename $(notdir $(confh)))_H \
69 kern_config_h_stamp_files = $(addprefix $(KERN_OBJS_DIR)/,$(notdir $(addsuffix .stamp,$(config_include_HEADERS) $(LOCAL_CONFIG_H))))
71 # Add some hooks to standard passes
72 include-pass-local: $(kern_config_h_stamp_files)
76 clean-local: clean-local-config-h
79 @$(foreach confh,$(config_h_stamp_files) $(kern_config_h_stamp_files),\
80 if [ -e $(confh) ] ; then rm $(confh) ; fi ; \