steps.mk
author Johannes Stezenbach <js@sig21.net>
Tue Oct 30 00:22:25 2012 +0000 (2012-10-30)
changeset 3097 5c67476c7342
parent 2935 4a563f872440
child 3115 1c68438f44f7
permissions -rw-r--r--
scripts/functions: fix endless loop in debug-shell with IO redirection

CT_DEBUG_INTERACTIVE is disabled when stdin, stdout or
stderr are redirected, but the check is only done at
the start of the build and doesn't catch when individual
build commands use redirection. When stdin is redirected
it will cause the debug shell to exit immediately, causing
and endless loop. Thus, save the stdin/our/err file handles
and restore them before invoking the debug shell.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
Message-Id: <20121030102225.GA8303@sig21.net>
Patchwork-Id: 195409
     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