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| author | Erico Nunes <nunes.erico@gmail.com> | 2015-06-21 20:53:06 -0300 |
|---|---|---|
| committer | Erico Nunes <nunes.erico@gmail.com> | 2015-06-21 20:53:06 -0300 |
| commit | b8e64a0c08ea2c3b2940d8e7154970f0dc610ed5 (patch) | |
| tree | f03abeb0de40df3a4ae192eb16e2ded7f73cd10f /config/libc | |
| parent | 230dc12285842a51e0a2a95137ae4eae675b97d3 (diff) | |
| download | crosstool-ng-b8e64a0c08ea2c3b2940d8e7154970f0dc610ed5.tar.gz crosstool-ng-b8e64a0c08ea2c3b2940d8e7154970f0dc610ed5.tar.bz2 crosstool-ng-b8e64a0c08ea2c3b2940d8e7154970f0dc610ed5.zip | |
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/libc')
| -rw-r--r-- | config/libc/avr-libc.in | 51 | ||||
| -rw-r--r-- | config/libc/avr-libc.in.2 | 8 |
2 files changed, 59 insertions, 0 deletions
diff --git a/config/libc/avr-libc.in b/config/libc/avr-libc.in new file mode 100644 index 00000000..968ca6be --- /dev/null +++ b/config/libc/avr-libc.in @@ -0,0 +1,51 @@ +# avr-libc options + +## depends on ARCH_avr +## depends on ! LINUX && ! WINDOWS && BARE_METAL +## +## select LIBC_SUPPORT_THREADS_NONE +## +## help The AVR Libc package provides a subset of the standard C library for +## help Atmel AVR 8-bit RISC microcontrollers. In addition, the library +## help provides the basic startup code needed by most applications. + +choice + bool + prompt "avr-libc version" +# Don't remove next line +# CT_INSERT_VERSION_BELOW + +config LIBC_AVR_LIBC_V_1_8_1 + bool + prompt "1.8.1" + +config LIBC_AVR_LIBC_V_1_8_0 + bool + prompt "1.8.0" + +config LIBC_AVR_LIBC_CUSTOM + bool + prompt "Custom avr-libc" + depends on EXPERIMENTAL + +endchoice + +if LIBC_AVR_LIBC_CUSTOM + +config LIBC_AVR_LIBC_CUSTOM_LOCATION + string + prompt "Full path to custom avr-libc source" + default "" + help + Enter the path to the directory (or tarball) of your source for avr-libc, + or leave blank to use default CT_CUSTOM_LOCATION_ROOT_DIR/avr-libc + +endif # LIBC_AVR_LIBC_CUSTOM + +config LIBC_VERSION + string +# Don't remove next line +# CT_INSERT_VERSION_STRING_BELOW + default "1.8.1" if LIBC_AVR_LIBC_V_1_8_1 + default "1.8.0" if LIBC_AVR_LIBC_V_1_8_0 + default "custom" if LIBC_AVR_LIBC_CUSTOM diff --git a/config/libc/avr-libc.in.2 b/config/libc/avr-libc.in.2 new file mode 100644 index 00000000..89a182fe --- /dev/null +++ b/config/libc/avr-libc.in.2 @@ -0,0 +1,8 @@ +# avr-libc second-part options + +config LIBC_AVR_LIBC_EXTRA_CONFIG_ARRAY + string + prompt "Extra config for avr-libc" + default "" + help + Extra flags to pass onto ./configure when configuring the avr-libc. |