steps.mk
author Daniel Price <daniel.price@gmail.com>
Tue Nov 20 16:59:17 2012 -0800 (2012-11-20)
changeset 3126 333d3e40cbd1
parent 3117 2b64e1b502cd
child 3162 e51eb0a614c7
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 # Makefile for each steps
     2 # Copyright 2006 Yann E. MORIN <yann.morin.1998@free.fr>
     3 
     4 # ----------------------------------------------------------
     5 # This is the steps help entry
     6 
     7 help-build::
     8 	@echo  '  list-steps         - List all build steps'
     9 
    10 help-env::
    11 	@echo  '  STOP=step          - Stop the build just after this step (list with list-steps)'
    12 	@echo  '  RESTART=step       - Restart the build just before this step (list with list-steps)'
    13 
    14 # ----------------------------------------------------------
    15 # The steps list
    16 
    17 # The _for_build steps are noop for native and cross,
    18 # but are actual steps for canadian and cross-native.
    19 # Please keep the last line with a '\' and keep the following empy line:
    20 # it helps when diffing and merging.
    21 CT_STEPS := libc_check_config        \
    22             companion_libs_for_build \
    23             binutils_for_build       \
    24             companion_libs_for_host  \
    25             binutils_for_host        \
    26             cc_core_pass_1           \
    27             kernel_headers           \
    28             libc_start_files         \
    29             cc_core_pass_2           \
    30             libc                     \
    31             cc_for_build             \
    32             cc_for_host              \
    33             libc_finish              \
    34             libelf_for_target        \
    35             binutils_for_target      \
    36             debug                    \
    37             test_suite               \
    38             finish                   \
    39 
    40 # Keep an empty line above this comment, so the last
    41 # back-slash terminated line works as expected.
    42 
    43 # Make the list available to sub-processes (scripts/crosstool-NG.sh needs it)
    44 export CT_STEPS
    45 
    46 # Print the steps list
    47 PHONY += list-steps
    48 list-steps:
    49 	@echo  'Available build steps, in order:'
    50 	@for step in $(CT_STEPS); do    \
    51 	     echo "  - $${step}";       \
    52 	 done
    53 	@echo  'Use "<step>" as action to execute only that step.'
    54 	@echo  'Use "+<step>" as action to execute up to that step.'
    55 	@echo  'Use "<step>+" as action to execute from that step onward.'
    56 
    57 # ----------------------------------------------------------
    58 # This part deals with executing steps
    59 
    60 $(CT_STEPS):
    61 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$@ STOP=$@ build
    62 
    63 $(patsubst %,+%,$(CT_STEPS)):
    64 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) STOP=$(patsubst +%,%,$@) build
    65 
    66 $(patsubst %,%+,$(CT_STEPS)):
    67 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$(patsubst %+,%,$@) build