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| author |   Erico Nunes <nunes.erico@gmail.com> | 2015-06-21 23:53:06 (GMT) |
|---|---|---|
| committer | Erico Nunes <nunes.erico@gmail.com> | 2015-06-21 23:53:06 (GMT) |
| commit | b8e64a0c08ea2c3b2940d8e7154970f0dc610ed5 (patch) | |
| tree | f03abeb0de40df3a4ae192eb16e2ded7f73cd10f /config/toolchain.in | |
| parent | 230dc12285842a51e0a2a95137ae4eae675b97d3 (diff) | |
avr-libc: add support for avr-libc C library
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>
Diffstat (limited to 'config/toolchain.in')
| -rw-r--r-- | config/toolchain.in | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/config/toolchain.in b/config/toolchain.in index 5048e91..361c6bd 100644 --- a/config/toolchain.in +++ b/config/toolchain.in @@ -99,6 +99,7 @@ comment "Tuple completion and aliasing" config TARGET_VENDOR string prompt "Tuple's vendor string" + depends on !LIBC_avr_libc default "unknown" help Vendor part of the target tuple. |