config/config.mk
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun May 08 22:57:57 2011 +0200 (2011-05-08)
changeset 2445 7000b634ba04
parent 2444 896cb0d36c1a
child 2453 3f3774e7e3b4
permissions -rw-r--r--
config: add generated help entries only if present

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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# ===========================================================================
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# crosstool-NG genererated config files
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# These targets are used from top-level makefile
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#-----------------------------------------------------------
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# List all config files, wether sourced or generated
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# The top-level config file to be used be configurators
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KCONFIG_TOP = config/config.in
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# Build the list of all source config files
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STATIC_CONFIG_FILES = $(patsubst $(CT_LIB_DIR)/%,%,$(shell find $(CT_LIB_DIR)/config -type f \( -name '*.in' -o -name '*.in.2' \) 2>/dev/null))
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# ... and how to access them:
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$(STATIC_CONFIG_FILES): config
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# Build a list of per-component-type source config files
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ARCH_CONFIG_FILES     = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/arch/*.in))
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ARCH_CONFIG_FILES_2   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/arch/*.in.2))
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KERNEL_CONFIG_FILES   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/kernel/*.in))
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KERNEL_CONFIG_FILES_2 = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/kernel/*.in.2))
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CC_CONFIG_FILES       = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/cc/*.in))
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CC_CONFIG_FILES_2     = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/cc/*.in.2))
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LIBC_CONFIG_FILES     = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/libc/*.in))
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LIBC_CONFIG_FILES_2   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/libc/*.in.2))
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DEBUG_CONFIG_FILES    = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/debug/*.in))
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# Build the list of generated config files
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GEN_CONFIG_FILES = config.gen/arch.in     \
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                   config.gen/kernel.in   \
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                   config.gen/cc.in       \
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                   config.gen/libc.in     \
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                   config.gen/debug.in
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# ... and how to access them:
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# Generated files depends on config.mk (this file) because it has the
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# functions needed to build the genrated files, and thus they might
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# need re-generation if config.mk changes
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$(GEN_CONFIG_FILES): config.gen                         \
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                     $(CT_LIB_DIR)/config/config.mk
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# Helper entry for the configurators
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PHONY += config_files
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config_files: $(STATIC_CONFIG_FILES) $(GEN_CONFIG_FILES)
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# Where to access to the source config files from
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config:
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	@$(ECHO) "  LN    config"
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	$(SILENT)ln -s $(CT_LIB_DIR)/config config
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# Where to store the generated config files into
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config.gen:
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	@$(ECHO) "  MKDIR config.gen"
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	$(SILENT)mkdir -p config.gen
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#-----------------------------------------------------------
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# Build list of per-component-type items to easily build generated files
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ARCHS   = $(patsubst config/arch/%.in,%,$(ARCH_CONFIG_FILES))
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KERNELS = $(patsubst config/kernel/%.in,%,$(KERNEL_CONFIG_FILES))
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CCS     = $(patsubst config/cc/%.in,%,$(CC_CONFIG_FILES))
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LIBCS   = $(patsubst config/libc/%.in,%,$(LIBC_CONFIG_FILES))
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DEBUGS  = $(patsubst config/debug/%.in,%,$(DEBUG_CONFIG_FILES))
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#-----------------------------------------------------------
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# Helper functions to ease building generated config files
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# The function 'build_gen_choice_in' builds a choice-menu of a list of
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# components in the given list, also adding source-ing of associazted
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# config files:
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# $1 : destination file
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# $2 : name for the entries family (eg. Architecture, kernel...)
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# $3 : prefix for the choice entries (eg. ARCH, KERNEL...)
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# $4 : base directory containing config files
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# $5 : generate backend conditionals if Y, don't if anything else
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# $6 : list of config entries (eg. for architectures: "alpha arm ia64"...,
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#      and for kernels: "bare-metal linux"...)
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# Example to build the kernels generated config file:
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# $(call build_gen_choice_in,config.gen/kernel.in,Target OS,KERNEL,config/kernel,$(KERNELS))
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define build_gen_choice_in
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	@$(ECHO) '  IN    $(1)'
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	$(SILENT)(echo "# $(2) menu";                                           \
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	  echo "# Generated file, do not edit!!!";                              \
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	  echo "";                                                              \
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	  echo "choice GEN_CHOICE_$(3)";                                        \
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	  echo "    bool";                                                      \
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	  echo "    prompt \"$(2)\"";                                           \
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	  echo "";                                                              \
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	  for entry in $(6); do                                                 \
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	    file="$(4)/$${entry}.in";                                           \
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	    _entry=$$(echo "$${entry}" |$(sed) -r -s -e 's/[-.+]/_/g;');        \
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	    echo "config $(3)_$${_entry}";                                      \
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	    echo "    bool";                                                    \
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	    echo "    prompt \"$${entry}\"";                                    \
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	    if [ "$(5)" = "Y" ]; then                                           \
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	      echo "    depends on $(3)_$${_entry}_AVAILABLE";                  \
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	    fi;                                                                 \
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	    sed -r -e '/^## depends on /!d; s/^## /    /;' $${file} 2>/dev/null;\
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	    sed -r -e '/^## select /!d; s/^## /    /;' $${file} 2>/dev/null;    \
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	    if grep -E '^## help' $${file} >/dev/null 2>&1; then                        \
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	      echo "    help";                                                          \
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	      sed -r -e '/^## help ?/!d; s/^## help ?/      /;' $${file} 2>/dev/null;   \
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	    fi;                                                                         \
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	    echo "";                                                            \
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	  done;                                                                 \
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	  echo "endchoice";                                                     \
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	  for entry in $(6); do                                                 \
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	    file="$(4)/$${entry}.in";                                           \
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	    _entry=$$(echo "$${entry}" |$(sed) -r -s -e 's/[-.+]/_/g;');        \
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	    echo "";                                                            \
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	    if [ "$(5)" = "Y" ]; then                                                                           \
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	      echo "config $(3)_$${_entry}_AVAILABLE";                                                          \
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	      echo "    bool";                                                                                  \
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	      echo "    default n if ! ( BACKEND_$(3) = \"$${entry}\" || BACKEND_$(3) = \"\" || ! BACKEND )";   \
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	      echo "    default y if BACKEND_$(3) = \"$${entry}\" || BACKEND_$(3) = \"\" || ! BACKEND";         \
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	    fi;                                                                                                 \
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	    echo "if $(3)_$${_entry}";                                          \
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	    echo "config $(3)";                                                 \
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	    echo "    default \"$${entry}\" if $(3)_$${_entry}";                \
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	    echo "source \"$${file}\"";                                         \
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	    echo "endif";                                                       \
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	  done;                                                                 \
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	  echo "";                                                              \
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	  for file in $(wildcard $(4)/*.in-common); do                          \
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	    echo "source \"$${file}\"";                                         \
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	  done;                                                                 \
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	 ) >$(1)
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	$(SILENT)(echo "# $(2) second part options";                            \
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	  echo "# Generated file, do not edit!!!";                              \
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	  for entry in $(6); do                                                 \
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	    file="$(4)/$${entry}.in";                                           \
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	    _entry=$$(echo "$${entry}" |$(sed) -r -s -e 's/[-.+]/_/g;');        \
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	    if [ -f "$${file}.2" ]; then                                        \
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	      echo "";                                                          \
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	      echo "if $(3)_$${_entry}";                                        \
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	      echo "comment \"$${entry} other options\"";                       \
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	      echo "source \"$${file}.2\"";                                     \
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	      echo "endif";                                                     \
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	    fi;                                                                 \
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	  done;                                                                 \
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	 ) >$(1).2
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endef
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# The function 'build_gen_menu_in' builds a menuconfig for each component in
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# the given list, source-ing the associated files conditionnaly:
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# $1 : destination file
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# $2 : name of entries family (eg. Tools, Debug...)
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# $3 : prefix for the menu entries (eg. DEBUG)
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# $4 : base directory containing config files
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# $5 : list of config entries (eg. for debug: "dmalloc duma gdb"...)
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# Example to build the generated debug config file:
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# $(call build_gen_menu_in,config.gen/debug.in,Debug,DEBUG,config/debug,$(DEBUGS))
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define build_gen_menu_in
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	@$(ECHO) '  IN    $(1)'
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	$(SILENT)(echo "# $(2) facilities menu";                                \
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	  echo "# Generated file, do not edit!!!";                              \
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	  echo "";                                                              \
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	  for entry in $(5); do                                                 \
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	    file="$(4)/$${entry}.in";                                           \
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	    _entry=$$(echo "$${entry}" |$(sed) -r -s -e 's/[-.+]/_/g;');        \
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	    echo "menuconfig $(3)_$${_entry}";                                  \
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	    echo "    bool";                                                    \
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	    echo "    prompt \"$${entry}\"";                                    \
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	    sed -r -e '/^## depends on /!d; s/^## /    /;' $${file} 2>/dev/null;\
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	    sed -r -e '/^## select /!d; s/^## /    /;' $${file} 2>/dev/null;    \
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	    if grep -E '^## help' $${file} >/dev/null 2>&1; then                        \
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	      echo "    help";                                                          \
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	      sed -r -e '/^## help ?/!d; s/^## help ?/      /;' $${file} 2>/dev/null;   \
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	    fi;                                                                         \
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	    echo "";                                                            \
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	    echo "if $(3)_$${_entry}";                                          \
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	    echo "source \"$${file}\"";                                         \
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	    echo "endif";                                                       \
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	    echo "";                                                            \
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	  done;                                                                 \
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	 ) >$(1)
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endef
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#-----------------------------------------------------------
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# The rules for the generated config files
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# WARNING! If a .in file disapears between two runs, that will NOT be detected!
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config.gen/arch.in: $(ARCH_CONFIG_FILES) $(ARCH_CONFIG_FILES_2)
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	$(call build_gen_choice_in,$@,Target Architecture,ARCH,config/arch,Y,$(ARCHS))
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config.gen/kernel.in: $(KERNEL_CONFIG_FILES) $(KERNEL_CONFIG_FILES_2)
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	$(call build_gen_choice_in,$@,Target OS,KERNEL,config/kernel,Y,$(KERNELS))
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config.gen/cc.in: $(CC_CONFIG_FILES) $(CC_CONFIG_FILES_2)
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	$(call build_gen_choice_in,$@,C compiler,CC,config/cc,,$(CCS))
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config.gen/libc.in: $(LIBC_CONFIG_FILES) $(LIBC_CONFIG_FILES_2)
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	$(call build_gen_choice_in,$@,C library,LIBC,config/libc,Y,$(LIBCS))
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config.gen/debug.in: $(DEBUG_CONFIG_FILES)
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	$(call build_gen_menu_in,$@,Debug,DEBUG,config/debug,$(DEBUGS))
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#-----------------------------------------------------------
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# Cleaning up the mess...
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clean::
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	@$(ECHO) "  CLEAN config"
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	$(SILENT)rm -f config 2>/dev/null || true
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	@$(ECHO) "  CLEAN config.gen"
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	$(SILENT)rm -rf config.gen