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config/config.mk
author Michael Hope <michael.hope@linaro.org>
Wed Oct 19 15:27:32 2011 +1300 (2011-10-19)
changeset 2739 f320e22f2cba
parent 2529 7e191964d8f2
child 2981 80151a249b85
permissions -rw-r--r--
arch: add softfp support

Some architectures support a mixed hard/soft floating point, where
the compiler emits hardware floating point instructions, but passes
the operands in core (aka integer) registers.

For example, ARM supports this mode (to come in the next changeset).

Add support for softfp cross compilers to the GCC and GLIBC
configuration. Needed for Ubuntu and other distros that are softfp.

Signed-off-by: Michael Hope <michael.hope@linaro.org>
[yann.morin.1998@anciens.enib.fr: split the original patch]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 # ===========================================================================

     2 # crosstool-NG genererated config files

     3 # These targets are used from top-level makefile

     4 

     5 #-----------------------------------------------------------

     6 # List all config files, wether sourced or generated

     7 

     8 # The top-level config file to be used be configurators

     9 KCONFIG_TOP = config/config.in

    10 

    11 # Build the list of all source config files

    12 STATIC_CONFIG_FILES = $(patsubst $(CT_LIB_DIR)/%,%,$(shell find $(CT_LIB_DIR)/config -type f \( -name '*.in' -o -name '*.in.2' \) 2>/dev/null))

    13 # ... and how to access them:

    14 $(STATIC_CONFIG_FILES): config

    15 

    16 # Build a list of per-component-type source config files

    17 ARCH_CONFIG_FILES     = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/arch/*.in))

    18 ARCH_CONFIG_FILES_2   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/arch/*.in.2))

    19 KERNEL_CONFIG_FILES   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/kernel/*.in))

    20 KERNEL_CONFIG_FILES_2 = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/kernel/*.in.2))

    21 CC_CONFIG_FILES       = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/cc/*.in))

    22 CC_CONFIG_FILES_2     = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/cc/*.in.2))

    23 LIBC_CONFIG_FILES     = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/libc/*.in))

    24 LIBC_CONFIG_FILES_2   = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/libc/*.in.2))

    25 DEBUG_CONFIG_FILES    = $(patsubst $(CT_LIB_DIR)/%,%,$(wildcard $(CT_LIB_DIR)/config/debug/*.in))

    26 

    27 # Build the list of generated config files

    28 GEN_CONFIG_FILES = config.gen/arch.in     \

    29                    config.gen/kernel.in   \

    30                    config.gen/cc.in       \

    31                    config.gen/libc.in     \

    32                    config.gen/debug.in

    33 # ... and how to access them:

    34 # Generated files depends on the gen_in_frags script because it has the

    35 # functions needed to build the genrated files, and thus they might need

    36 # re-generation if it changes.

    37 # They also depends on config.mk (this file) because it has the dependency

    38 # rules, and thus they might need re-generation if the deps change.

    39 $(GEN_CONFIG_FILES): config.gen                             \

    40                      $(CT_LIB_DIR)/scripts/gen_in_frags.sh  \

    41                      $(CT_LIB_DIR)/config/config.mk

    42 

    43 # Helper entry for the configurators

    44 PHONY += config_files

    45 config_files: $(STATIC_CONFIG_FILES) $(GEN_CONFIG_FILES)

    46 

    47 # Where to access to the source config files from

    48 config:

    49 	@$(ECHO) "  LN    config"

    50 	$(SILENT)ln -s $(CT_LIB_DIR)/config config

    51 

    52 # Where to store the generated config files into

    53 config.gen:

    54 	@$(ECHO) "  MKDIR config.gen"

    55 	$(SILENT)mkdir -p config.gen

    56 

    57 #-----------------------------------------------------------

    58 # Build list of per-component-type items to easily build generated files

    59 

    60 ARCHS   = $(patsubst config/arch/%.in,%,$(ARCH_CONFIG_FILES))

    61 KERNELS = $(patsubst config/kernel/%.in,%,$(KERNEL_CONFIG_FILES))

    62 CCS     = $(patsubst config/cc/%.in,%,$(CC_CONFIG_FILES))

    63 LIBCS   = $(patsubst config/libc/%.in,%,$(LIBC_CONFIG_FILES))

    64 DEBUGS  = $(patsubst config/debug/%.in,%,$(DEBUG_CONFIG_FILES))

    65 

    66 #-----------------------------------------------------------

    67 # The rules for the generated config files

    68 

    69 # WARNING! If a .in file disapears between two runs, that will NOT be detected!

    70 

    71 config.gen/arch.in: $(ARCH_CONFIG_FILES) $(ARCH_CONFIG_FILES_2)

    72 	@$(ECHO) '  IN    $(@)'

    73 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "Target Architecture" "ARCH" "config/arch" "Y" $(ARCHS)

    74 

    75 config.gen/kernel.in: $(KERNEL_CONFIG_FILES) $(KERNEL_CONFIG_FILES_2)

    76 	@$(ECHO) '  IN    $(@)'

    77 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "Target OS" "KERNEL" "config/kernel" "Y" $(KERNELS)

    78 

    79 config.gen/cc.in: $(CC_CONFIG_FILES) $(CC_CONFIG_FILES_2)

    80 	@$(ECHO) '  IN    $(@)'

    81 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "C compiler" "CC" "config/cc" "N" $(CCS)

    82 

    83 config.gen/libc.in: $(LIBC_CONFIG_FILES) $(LIBC_CONFIG_FILES_2)

    84 	@$(ECHO) '  IN    $(@)'

    85 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh choice "$@" "C library" "LIBC" "config/libc" "Y" $(LIBCS)

    86 

    87 config.gen/debug.in: $(DEBUG_CONFIG_FILES)

    88 	@$(ECHO) '  IN    $(@)'

    89 	$(SILENT)$(CT_LIB_DIR)/scripts/gen_in_frags.sh menu "$@" "Debug facilities" "DEBUG" "config/debug" $(DEBUGS)

    90 

    91 #-----------------------------------------------------------

    92 # Cleaning up the mess...

    93 

    94 clean::

    95 	@$(ECHO) "  CLEAN config"

    96 	$(SILENT)rm -f config 2>/dev/null || true

    97 	@$(ECHO) "  CLEAN config.gen"

    98 	$(SILENT)rm -rf config.gen
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