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https://github.com/crosstool-ng/crosstool-ng.git
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b8e64a0c08
This commit adds support for the avr-libc C library. According to the project page at http://www.nongnu.org/avr-libc , the avr-libc package provides a subset of the standard C library for Atmel AVR 8-bit RISC microcontrollers. In addition, the library provides the basic startup code needed by most applications. Support for this library in crosstool-ng is only enabled for the AVR 8-bit target. The avr-libc manual and most distributions build the AVR 8-bit gcc toolchain with the "avr" (non-canonical) target. Some experimentation also led to the conclusion that other (canonical) targets are not very well supported, so we force the "avr" target for crosstool-ng as well. The manual also recommends building avr-libc after the final gcc build. To accomplish this with crosstool-ng, a new do_libc_post_cc step is added, in which currently only avr-libc performs its build, and is a no-op for the other libc options. Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
68 lines
2.3 KiB
Makefile
68 lines
2.3 KiB
Makefile
# Makefile for each steps
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# Copyright 2006 Yann E. MORIN <yann.morin.1998@free.fr>
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# ----------------------------------------------------------
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# This is the steps help entry
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help-build::
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@echo ' list-steps - List all build steps'
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help-env::
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@echo ' STOP=step - Stop the build just after this step (list with list-steps)'
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@echo ' RESTART=step - Restart the build just before this step (list with list-steps)'
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# ----------------------------------------------------------
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# The steps list
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# The _for_build steps are noop for native and cross,
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# but are actual steps for canadian and cross-native.
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# Please keep the last line with a '\' and keep the following empy line:
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# it helps when diffing and merging.
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CT_STEPS := libc_check_config \
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companion_libs_for_build \
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binutils_for_build \
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companion_libs_for_host \
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binutils_for_host \
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cc_core_pass_1 \
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kernel_headers \
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libc_start_files \
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cc_core_pass_2 \
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libc \
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cc_for_build \
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cc_for_host \
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libc_post_cc \
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libelf_for_target \
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binutils_for_target \
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debug \
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test_suite \
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finish \
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# Keep an empty line above this comment, so the last
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# back-slash terminated line works as expected.
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# Make the list available to sub-processes (scripts/crosstool-NG.sh needs it)
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export CT_STEPS
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# Print the steps list
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PHONY += list-steps
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list-steps:
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@echo 'Available build steps, in order:'
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@for step in $(CT_STEPS); do \
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echo " - $${step}"; \
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done
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@echo 'Use "<step>" as action to execute only that step.'
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@echo 'Use "+<step>" as action to execute up to that step.'
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@echo 'Use "<step>+" as action to execute from that step onward.'
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# ----------------------------------------------------------
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# This part deals with executing steps
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$(CT_STEPS):
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$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$@ STOP=$@ build
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$(patsubst %,+%,$(CT_STEPS)):
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$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) STOP=$(patsubst +%,%,$@) build
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$(patsubst %,%+,$(CT_STEPS)):
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$(SILENT)$(MAKE) -rf $(CT_NG) V=$(V) RESTART=$(patsubst %+,%,$@) build
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