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2015-06-21avr-libc: add support for avr-libc C libraryErico Nunes1-0/+4
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>
2014-09-11libc/musl: Add config option for extra developer warningsBryan Hundven1-0/+4
This commit adds a configuration knob for enabling extra developer warnings to be enabled during the musl-libc build. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2014-09-11libc/musl: Add config option for debugging infoBryan Hundven1-0/+4
This option enables a configuration knob for adding debugging info. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2014-09-11libc/musl: Add options for optimizationBryan Hundven1-1/+5
This commit adds configuration knobs for optimizing musl-libc. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
2014-08-08libc/musl: add musl-libc supportBryan Hundven1-0/+103
This patch adds initial support for musl-libc. Musl-libc versions currently supported: * 1.0.3 (Stable) * 1.1.3 (Previous Mainline) * 1.1.4 (Mainline) Futher improvements are needed. * gcc-4.9.x has issues (Might be fixed in musl-1.1.4). * Multilib support is needed. * Checks to make sure paths are correct. * Move to 2-step gcc build. 3-step build is not necessary. Signed-off-by: Bryan Hundven <bryanhundven@gmail.com> [yann.morin.1998@free.fr: removed the gcc musl patch, to be added later; removed dead code do_get_arch()] Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>