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steps.mk
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Jun 13 23:38:37 2010 +0200 (2010-06-13)
changeset 1983 198a5a6e5239
parent 1876 a6a4beab3125
child 2099 1bb063c8a0ca
permissions -rw-r--r--
cc/gcc: baremetal requires a two-pass process

Here, we implement a highly ugly hack. I'm not proud of that one...

To build the libstdc++ library, the compiler requires the C library. In
case we build for non-baremetal, this is normally handled by the final
step, later.

But in the case of bare-metal, we never go through the final step (because
it does not work, and it seems complex enough to make it work), so the
baremetal compilers are issued out of the core step. 
     1 # Makefile for each steps

     2 # Copyright 2006 Yann E. MORIN <yann.morin.1998@anciens.enib.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 # Please keep the last line with a '\' and keep the following empy line:

    18 # it helps when diffing and merging.

    19 CT_STEPS := libc_check_config   \

    20             kernel_headers      \

    21             gmp                 \

    22             mpfr                \

    23             ppl                 \

    24             cloog               \

    25             mpc                 \

    26             libelf              \

    27             binutils            \

    28             elf2flt             \

    29             sstrip              \

    30             cc_core_pass_1      \

    31             libc_headers        \

    32             libc_start_files    \

    33             cc_core_pass_2      \

    34             libc                \

    35             cc                  \

    36             libc_finish         \

    37             gmp_target          \

    38             mpfr_target         \

    39             libelf_target       \

    40             binutils_target     \

    41             debug               \

    42             test_suite          \

    43             finish              \

    44 

    45 # Make the list available to sub-processes (scripts/crosstool-NG.sh needs it)

    46 export CT_STEPS

    47 

    48 # Print the steps list

    49 PHONY += list-steps

    50 list-steps:

    51 	@echo  'Available build steps, in order:'

    52 	@for step in $(CT_STEPS); do    \

    53 	     echo "  - $${step}";       \

    54 	 done

    55 	@echo  'Use "<step>" as action to execute only that step.'

    56 	@echo  'Use "+<step>" as action to execute up to that step.'

    57 	@echo  'Use "<step>+" as action to execute from that step onward.'

    58 

    59 # ----------------------------------------------------------

    60 # This part deals with executing steps

    61 

    62 $(CT_STEPS):

    63 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$@ STOP=$@ build

    64 

    65 $(patsubst %,+%,$(CT_STEPS)):

    66 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) STOP=$(patsubst +%,%,$@) build

    67 

    68 $(patsubst %,%+,$(CT_STEPS)):

    69 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$(patsubst %+,%,$@) build
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