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kconfig/kconfig.mk
author Daniel Price <daniel.price@gmail.com>
Tue Nov 20 16:59:17 2012 -0800 (2012-11-20)
changeset 3126 333d3e40cbd1
parent 2999 4ccfca658d9b
child 3167 15f57d843296
permissions -rw-r--r--
scripts: refine static linking check to better guide the user

The current mechanism to check if static linking is possible, and the mesage
displayed on failure, can be puzzling to the unsuspecting user.

Also, the current implementation is not using the existing infrastructure,
and is thus difficult to enhance with new tests.

So, switch to using the standard CT_DoExecLog infra, and use four tests to
check for the host compiler:
- check we can run it
- check it can build a trivial program
- check it can statically link that program
- check if it statically link with libstdc++

That should cover most of the problems. Hopefully.

(At the same time, fix a typo in a comment)

Signed-off-by: Daniel Price <daniel.price@gmail.com>
[yann.morin.1998@free.fr: split original patch for self-contained changes]
[yann.morin.1998@free.fr: use steps to better see gcc's output]
[yann.morin.1998@free.fr: commit log]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Message-Id: <163f86b5216fc08c672a.1353459722@nipigon.dssd.com>
Patchwork-Id: 200536 
     1 # ===========================================================================

     2 # crosstool-NG configuration targets

     3 # These targets are used from top-level makefile

     4 

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

     6 # The configurators rules

     7 

     8 configurators = menuconfig nconfig oldconfig defconfig olddefconfig

     9 PHONY += $(configurators)

    10 

    11 $(configurators): config_files

    12 

    13 # We need CONF for savedefconfig in scripts/saveSample.sh

    14 export CONF  := $(CT_LIB_DIR)/kconfig/conf

    15 MCONF := $(CT_LIB_DIR)/kconfig/mconf

    16 NCONF := $(CT_LIB_DIR)/kconfig/nconf

    17 

    18 menuconfig:

    19 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

    20 	$(SILENT)$(MCONF) $(KCONFIG_TOP)

    21 

    22 nconfig:

    23 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

    24 	$(SILENT)$(NCONF) $(KCONFIG_TOP)

    25 

    26 oldconfig: .config

    27 	@$(ECHO) "  CONF  $(KCONFIG_TOP)"

    28 	$(SILENT)$(CONF) --silent$@ $(KCONFIG_TOP)

    29 

    30 defconfig: .config

    31 	@$(ECHO) '  GEN   $@'

    32 	$(SILENT)$(CONF) --savedefconfig=$${CONFIG-defconfig} $(KCONFIG_TOP)

    33 

    34 olddefconfig:

    35 	@$(ECHO) '  CONF  $@'

    36 	$(SILENT)$(CONF) --defconfig=$${CONFIG-defconfig} $(KCONFIG_TOP)

    37 

    38 # Always be silent, the stdout an be >.config

    39 extractconfig:

    40 	@$(awk) 'BEGIN { dump=0; }                                                  \

    41 	         dump==1 && $$0~/^\[.....\][[:space:]]+(# |)CT_/ {                  \

    42 	             $$1="";                                                        \

    43 	             gsub("^[[:space:]]","");                                       \

    44 	             print;                                                         \

    45 	         }                                                                  \

    46 	         $$0~/Dumping user-supplied crosstool-NG configuration: done in/ {  \

    47 	             dump=0;                                                        \

    48 	         }                                                                  \

    49 	         $$0~/Dumping user-supplied crosstool-NG configuration$$/ {         \

    50 	             dump=1;                                                        \

    51 	         }'

    52 

    53 #-----------------------------------------------------------

    54 # Help text used by make help

    55 

    56 help-config::

    57 	@echo  '  menuconfig         - Update current config using a menu based program'

    58 	@echo  '  oldconfig          - Update current config using a provided .config as base'

    59 	@echo  '  extractconfig      - Extract to stdout the configuration items from a'

    60 	@echo  '                       build.log file piped to stdin'

    61 	@echo  '  defconfig          - Save current config as a mini-defconfig to $${CONFIG}'

    62 	@echo  '  olddefconfig       - Update config from a mini-defconfig $${CONFIG}'

    63 	@echo  '                       (default: $${CONFIG}=./defconfig)'
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