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avr: add avr toolchain config sample

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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.

Some patches are required in avr-libc for a toolchain with gcc 5.x to
work. These patches are still not part of any avr-libc release version,
so the config sample currently forces 4.9.x to avoid requiring to clone
avr-libc trunk.

References:
    https://savannah.nongnu.org/bugs/?44574
    https://gcc.gnu.org/gcc-5/changes.html

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
This commit is contained in:
Erico Nunes 2015-06-21 20:53:18 -03:00
parent b8e64a0c08
commit 6da2fde11e
2 changed files with 7 additions and 0 deletions
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samples/avr/crosstool.config Normal file
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CT_ARCH_avr=y
CT_CC_GCC_V_4_9_2=y
CT_DEBUG_gdb=y
CT_ISL_V_0_12_2=y

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samples/avr/reported.by Normal file
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reporter_name="Erico Nunes"
reporter_url="https://github.com/enunes"
reporter_comment="EXPERIMENTAL AVR 8-bit toolchain"