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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>
72 lines
1.8 KiB
Bash
72 lines
1.8 KiB
Bash
# This file adds functions to build the avr-libc C library
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do_libc_get() {
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local libc_src
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libc_src="http://download.savannah.gnu.org/releases/avr-libc"
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if [ "${CT_LIBC_AVR_LIBC_CUSTOM}" = "y" ]; then
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CT_GetCustom "avr-libc" "${CT_LIBC_VERSION}" \
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"${CT_LIBC_AVR_LIBC_CUSTOM_LOCATION}"
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else # ! custom location
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CT_GetFile "avr-libc-${CT_LIBC_VERSION}" "${libc_src}"
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fi # ! custom location
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}
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do_libc_extract() {
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# If using custom directory location, nothing to do.
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if [ "${CT_LIBC_AVR_LIBC_CUSTOM}" = "y" ]; then
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# Abort if the custom directory is not found.
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if ! [ -d "${CT_SRC_DIR}/avr-libc-${CT_LIBC_VERSION}" ]; then
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CT_Abort "Directory not found: ${CT_SRC_DIR}/avr-libc-${CT_LIBC_VERSION}"
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fi
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return 0
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fi
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CT_Extract "avr-libc-${CT_LIBC_VERSION}"
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CT_Patch "avr-libc" "${CT_LIBC_VERSION}"
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}
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do_libc_check_config() {
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:
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}
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do_libc_configure() {
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CT_DoLog EXTRA "Configuring C library"
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CT_DoExecLog CFG \
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./configure \
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--build=${CT_BUILD} \
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--host=${CT_TARGET} \
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--prefix=${CT_PREFIX_DIR} \
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"${CT_LIBC_AVR_LIBC_EXTRA_CONFIG_ARRAY[@]}"
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}
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do_libc_start_files() {
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:
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}
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do_libc() {
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:
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}
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do_libc_post_cc() {
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CT_DoStep INFO "Installing C library"
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CT_DoLog EXTRA "Copying sources to build directory"
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CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/avr-libc-${CT_LIBC_VERSION}" \
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"${CT_BUILD_DIR}/build-libc-post-cc"
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cd "${CT_BUILD_DIR}/build-libc-post-cc"
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do_libc_configure
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CT_DoLog EXTRA "Building C library"
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CT_DoExecLog ALL make ${JOBSFLAGS}
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CT_DoLog EXTRA "Installing C library"
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CT_DoExecLog ALL make install
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CT_EndStep
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}
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