steps.mk
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Jan 03 22:57:25 2012 +0100 (2012-01-03)
changeset 2936 2dfea349d307
parent 2935 4a563f872440
child 3115 1c68438f44f7
permissions -rw-r--r--
cc/gcc: build core compilers for canadian

Currently, we rely on an existing external cross-compiler targetting
the target, to build the C library.

This can pause quite a few problems if that compiler is different from
the one we are building, because it could introduce some ABI issues.

This patch removes this dependency, by building the core compilers
as we do for standard cross, and also by building the binutils and
gcc, for running on the build machine.

This means we no longer need to offer the cross-sompiler selection in
the menuconfig.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
     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             gmp_for_build       \
    23             mpfr_for_build      \
    24             ppl_for_build       \
    25             cloog_for_build     \
    26             mpc_for_build       \
    27             libelf_for_build    \
    28             binutils_for_build  \
    29             elf2flt_for_build   \
    30             gmp_for_host        \
    31             mpfr_for_host       \
    32             ppl_for_host        \
    33             cloog_for_host      \
    34             mpc_for_host        \
    35             libelf_for_host     \
    36             binutils_for_host   \
    37             elf2flt_for_host    \
    38             sstrip_for_host     \
    39             cc_core_pass_1      \
    40             kernel_headers      \
    41             libc_start_files    \
    42             cc_core_pass_2      \
    43             libc                \
    44             cc_for_build        \
    45             cc_for_host         \
    46             libc_finish         \
    47             libelf_for_target   \
    48             binutils_for_target \
    49             debug               \
    50             test_suite          \
    51             finish              \
    52 
    53 # Keep an empty line above this comment, so the last
    54 # back-slash terminated line works as expected.
    55 
    56 # Make the list available to sub-processes (scripts/crosstool-NG.sh needs it)
    57 export CT_STEPS
    58 
    59 # Print the steps list
    60 PHONY += list-steps
    61 list-steps:
    62 	@echo  'Available build steps, in order:'
    63 	@for step in $(CT_STEPS); do    \
    64 	     echo "  - $${step}";       \
    65 	 done
    66 	@echo  'Use "<step>" as action to execute only that step.'
    67 	@echo  'Use "+<step>" as action to execute up to that step.'
    68 	@echo  'Use "<step>+" as action to execute from that step onward.'
    69 
    70 # ----------------------------------------------------------
    71 # This part deals with executing steps
    72 
    73 $(CT_STEPS):
    74 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$@ STOP=$@ build
    75 
    76 $(patsubst %,+%,$(CT_STEPS)):
    77 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) STOP=$(patsubst +%,%,$@) build
    78 
    79 $(patsubst %,%+,$(CT_STEPS)):
    80 	$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$(patsubst %+,%,$@) build