Extract the config files related stuff from the kconfig stuff

- create config/config.mk, with all the config.gen/ rules
- the only common points between config files and configurators:
  - the top-level config file to include, stored in KCONFIG_TOP
  - the config_file rules, which makes config files available to configurators
- dependency-files are renamed from %.d to %.dep (.d is reserved for directories)
- a few eye-candy here and there

 /trunk/kconfig/kconfig.mk |  184    12   172     0 +++--------------------------------------------------
 /trunk/config/config.mk   |  118     9   109     0 +++-------------------------------
 /trunk/ct-ng.in           |    1     1     0     0 +
 3 files changed, 22 insertions(+), 281 deletions(-)

1 files changed, 12 insertions, 172 deletions

diff --git a/kconfig/kconfig.mk b/kconfig/kconfig.mk
index ae340a8..38a3470 100644
--- a/kconfig/kconfig.mk
+++ b/kconfig/kconfig.mk
@@ -8,180 +8,24 @@ export PROJECTVERSION=$(CT_VERSION)
 #-----------------------------------------------------------
 # Some static /configuration/
 
-KCONFIG_TOP = config/config.in
+# The place where the kconfig stuff lies
 obj = kconfig
-PHONY += clean help oldconfig menuconfig defoldconfig
-
-#-----------------------------------------------------------
-# List all config files, source and generated
-
-# Build the list of all source config files
-STATIC_CONFIG_FILES = $(patsubst $(CT_LIB_DIR)/%,%,$(shell find $(CT_LIB_DIR)/config -type f -name '*.in' 2>/dev/null))
-# ... and how to access them:
-$(STATIC_CONFIG_FILES): config
-
-# Build a list of per-component-type source config files
-ARCH_CONFIG_FILES   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/arch/*.in))
-KERNEL_CONFIG_FILES = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/kernel/*.in))
-CC_CONFIG_FILES     = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/cc/*.in))
-LIBC_CONFIG_FILES   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/libc/*.in))
-DEBUG_CONFIG_FILES  = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/debug/*.in))
-TOOL_CONFIG_FILES   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/tools/*.in))
-
-# Build the list of generated config files
-GEN_CONFIG_FILES = config.gen/arch.in     \
-                   config.gen/kernel.in   \
-                   config.gen/cc.in       \
-                   config.gen/libc.in     \
-                   config.gen/tools.in    \
-                   config.gen/debug.in
-# ... and how to access them:
-# Generated files depends on kconfig.mk (this file) because it has the
-# functions needed to build the genrated files, and thus they might
-# need re-generation if kconfig.mk changes
-$(GEN_CONFIG_FILES): config.gen                         \
-                     $(CT_LIB_DIR)/kconfig/kconfig.mk
-
-# KCONFIG_TOP should already be in STATIC_CONFIG_FILES, anyway...
-CONFIG_FILES = $(sort $(KCONFIG_TOP) $(STATIC_CONFIG_FILES) $(GEN_CONFIG_FILES))
-
-# Where to access to the source config files from
-config:
-	@$(ECHO) "  LN    config"
-	$(SILENT)ln -s $(CT_LIB_DIR)/config config
-
-# Where to store the generated config files into
-config.gen:
-	@$(ECHO) "  MKDIR config.gen"
-	$(SILENT)mkdir -p config.gen
-
-#-----------------------------------------------------------
-# Build list of per-component-type items to easily build generated files
-
-ARCHS   = $(patsubst config/arch/%.in,%,$(ARCH_CONFIG_FILES))
-KERNELS = $(patsubst config/kernel/%.in,%,$(KERNEL_CONFIG_FILES))
-CCS     = $(patsubst config/cc/%.in,%,$(CC_CONFIG_FILES))
-LIBCS   = $(patsubst config/libc/%.in,%,$(LIBC_CONFIG_FILES))
-DEBUGS  = $(patsubst config/debug/%.in,%,$(DEBUG_CONFIG_FILES))
-TOOLS   = $(patsubst config/tools/%.in,%,$(TOOL_CONFIG_FILES))
-
-#-----------------------------------------------------------
-# Helper functions to ease building generated config files
-
-# The function 'build_gen_choice_in' builds a choice-menu of a list of
-# components in the given list, also adding source-ing of associazted
-# config files:
-# $1 : destination file
-# $2 : name for the entries family (eg. Architecture, kernel...)
-# $3 : prefix for the choice entries (eg. ARCH, KERNEL...)
-# $4 : base directory containing config files
-# $5 : list of config entries (eg. for architectures: "alpha arm ia64"...,
-#      and for kernels: "bare-metal linux"...)
-# Example to build the kernels generated config file:
-# $(call build_gen_choice_in,config.gen/kernel.in,Target OS,KERNEL,config/kernel,$(KERNELS))
-define build_gen_choice_in
-	@$(ECHO) '  IN    $(1)'
-	$(SILENT)(echo "# $(2) menu";                                       \
-	  echo "# Generated file, do not edit!!!";                          \
-	  echo "";                                                          \
-	  echo "choice";                                                    \
-	  echo "    bool";                                                  \
-	  echo "    prompt \"$(2)\"";                                       \
-	  echo "";                                                          \
-	  for entry in $(5); do                                             \
-	    file="$(4)/$${entry}.in";                                       \
-	    _entry=$$(echo "$${entry}" |sed -r -s -e 's/[-.+]/_/g;');       \
-	    echo "config $(3)_$${_entry}";                                  \
-	    echo "    bool";                                                \
-	    printf "    prompt \"$${entry}";                                \
-	    if grep -E '^# +EXPERIMENTAL$$' $${file} >/dev/null 2>&1; then  \
-	      echo " (EXPERIMENTAL)\"";                                     \
-	      echo "    depends on EXPERIMENTAL";                           \
-	    else                                                            \
-	      echo "\"";                                                    \
-	    fi;                                                             \
-	  done;                                                             \
-	  echo "";                                                          \
-	  echo "endchoice";                                                 \
-	  for entry in $(5); do                                             \
-	    file="$(4)/$${entry}.in";                                       \
-	    _entry=$$(echo "$${entry}" |sed -r -s -e 's/[-.+]/_/g;');       \
-	    echo "";                                                        \
-	    echo "if $(3)_$${_entry}";                                      \
-	    echo "config $(3)";                                             \
-	    echo "    default \"$${entry}\" if $(3)_$${_entry}";            \
-	    echo "source $${file}";                                         \
-	    echo "endif";                                                   \
-	  done;                                                             \
-	 ) >$(1)
-endef
-
-# The function 'build_gen_menu_in' builds a menuconfig for each component in
-# the given list, source-ing the associated files conditionnaly:
-# $1 : destination file
-# $2 : name of entries family (eg. Tools, Debug...)
-# $3 : prefix for the menu entries (eg. TOOL, DEBUG)
-# $4 : base directory containing config files
-# $5 : list of config entries (eg. for tools: "libelf sstrip"..., and for
-#      debug: "dmalloc duma gdb"...)
-# Example to build the tools generated config file:
-# $(call build_gen_menu_in,config.gen/tools.in,Tools,TOOL,config/tools,$(TOOLS))
-define build_gen_menu_in
-	@$(ECHO) '  IN    $(1)'
-	$(SILENT)(echo "# $(2) facilities menu";                            \
-	  echo "# Generated file, do not edit!!!";                          \
-	  echo "";                                                          \
-	  for entry in $(5); do                                             \
-	    file="$(4)/$${entry}.in";                                       \
-	    _entry=$$(echo "$${entry}" |sed -r -s -e 's/[-.+]/_/g;');       \
-	    echo "menuconfig $(3)_$${_entry}";                              \
-	    echo "    bool";                                                \
-	    printf "    prompt \"$${entry}";                                \
-	    if grep -E '^# +EXPERIMENTAL$$' $${file} >/dev/null 2>&1; then  \
-	      echo " (EXPERIMENTAL)\"";                                     \
-	      echo "    depends on EXPERIMENTAL";                           \
-	    else                                                            \
-	      echo "\"";                                                    \
-	    fi;                                                             \
-	    echo "if $(3)_$${_entry}";                                      \
-	    echo "source $${file}";                                         \
-	    echo "endif";                                                   \
-	    echo "";                                                        \
-	  done;                                                             \
-	 ) >$(1)
-endef
-
-#-----------------------------------------------------------
-# The rules for the generated config files
-
-config.gen/arch.in: $(ARCH_CONFIG_FILES)
-	$(call build_gen_choice_in,$@,Target Architecture,ARCH,config/arch,$(ARCHS))
-
-config.gen/kernel.in: $(KERNEL_CONFIG_FILES)
-	$(call build_gen_choice_in,$@,Target OS,KERNEL,config/kernel,$(KERNELS))
-
-config.gen/cc.in: $(CC_CONFIG_FILES)
-	$(call build_gen_choice_in,$@,C compiler,CC,config/cc,$(CCS))
-
-config.gen/libc.in: $(LIBC_CONFIG_FILES)
-	$(call build_gen_choice_in,$@,C library,LIBC,config/libc,$(LIBCS))
-
-config.gen/tools.in: $(TOOL_CONFIG_FILES)
-	$(call build_gen_menu_in,$@,Tools,TOOL,config/tools,$(TOOLS))
-
-config.gen/debug.in: $(DEBUG_CONFIG_FILES)
-	$(call build_gen_menu_in,$@,Debug,DEBUG,config/debug,$(DEBUGS))
 
 #-----------------------------------------------------------
 # The configurators rules
 
-menuconfig: $(obj)/mconf $(CONFIG_FILES)
+PHONY += oldconfig menuconfig defoldconfig
+
+menuconfig: $(obj)/mconf config_files
+	@$(ECHO) "  MCONF $(KCONFIG_TOP)"
 	$(SILENT)$< $(KCONFIG_TOP)
 
-oldconfig: $(obj)/conf .config $(CONFIG_FILES)
+oldconfig: $(obj)/conf .config config_files
+	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
 	$(SILENT)$< -s $(KCONFIG_TOP)
 
-defoldconfig: $(obj)/conf .config $(CONFIG_FILES)
+defoldconfig: $(obj)/conf .config config_files
+	@$(ECHO) "  CONF  $(KCONFIG_TOP)"
 	$(SILENT)yes "" |$< -s $(KCONFIG_TOP)
 
 #-----------------------------------------------------------
@@ -223,20 +67,20 @@ mconf_SRC = $(SRC) $(LXSRC) kconfig/mconf.c
 mconf_OBJ = $(patsubst %.c,%.o,$(mconf_SRC))
 
 # Cheesy auto-dependencies
-DEPS = $(patsubst %.c,%.d,$(sort $(conf_SRC) $(mconf_SRC)))
+DEPS = $(patsubst %.c,%.dep,$(sort $(conf_SRC) $(mconf_SRC)))
+-include $(DEPS)
 
 # This is not very nice, as they will get rebuild even if (dist)cleaning... :-(
 # Should look into the Linux kernel Kbuild to see how they do that...
 # To really make me look into this, keep the annoying "DEP xxx" messages.
 # Also see the comment for the "%.o: %c" rule below
-%.d: %.c $(CT_LIB_DIR)/kconfig/kconfig.mk
+%.dep: %.c $(CT_LIB_DIR)/kconfig/kconfig.mk $(CT_NG)
 	$(SILENT)if [ ! -d $(obj)/lxdialog ]; then  \
 	   $(ECHO) "  MKDIR $(obj)";           \
 	   mkdir -p $(obj)/lxdialog;        \
 	 fi
 	@$(ECHO) "  DEP   $@"
 	$(SILENT)$(HOST_CC) $(CFLAGS) $(EXTRA_CFLAGS) -MM $< |sed -r -e 's|([^:]+.o)( *:+)|$(<:.c=.o) $@\2|;' >$@
--include $(DEPS)
 
 # Each .o must depend on the corresponding .c (obvious, isn't it?),
 # but *can not* depend on kconfig/, because kconfig can be touched
@@ -270,7 +114,3 @@ clean::
 	@$(ECHO) "  CLEAN kconfig"
 	$(SILENT)rm -f kconfig/{,m}conf $(conf_OBJ) $(mconf_OBJ) $(DEPS)
 	$(SILENT)rmdir --ignore-fail-on-non-empty kconfig{/lxdialog,} 2>/dev/null || true
-	@$(ECHO) "  CLEAN config"
-	$(SILENT)rm -f config 2>/dev/null || true
-	@$(ECHO) "  CLEAN config.gen"
-	$(SILENT)rm -rf config.gen