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https://github.com/crosstool-ng/crosstool-ng.git
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b090e0f74d
Convert absolute targets to relative so that they are valid on the host, too. The procedure is very similar to uclibc, so it is moved into a common function. Signed-off-by: Alexey Neyman <stilor@att.net>
458 lines
18 KiB
Bash
458 lines
18 KiB
Bash
# This file declares functions to install the uClibc C library
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# Copyright 2007 Yann E. MORIN
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# Licensed under the GPL v2. See COPYING in the root of this package
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# This is a constant because it does not change very often.
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# We're in 2010, and are still using data from 7 years ago.
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uclibc_locales_version=030818
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uclibc_locale_tarball="uClibc-locale-${uclibc_locales_version}"
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if [ "${CT_LIBC_UCLIBC_NG}" = "y" ]; then
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uclibc_name="uClibc-ng"
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libc_src="http://downloads.uclibc-ng.org/releases/${CT_LIBC_VERSION}"
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else
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uclibc_name="uClibc"
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libc_src="http://www.uclibc.org/downloads
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http://www.uclibc.org/downloads/old-releases"
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fi
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# Download uClibc
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do_libc_get() {
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if [ "${CT_LIBC_UCLIBC_CUSTOM}" = "y" ]; then
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CT_GetCustom "${uclibc_name}" "${CT_LIBC_UCLIBC_CUSTOM_VERSION}" \
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"${CT_LIBC_UCLIBC_CUSTOM_LOCATION}"
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else
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CT_GetFile "${uclibc_name}-${CT_LIBC_VERSION}" ${libc_src}
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fi
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# uClibc locales
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if [ "${CT_LIBC_UCLIBC_LOCALES_PREGEN_DATA}" = "y" ]; then
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CT_GetFile "${uclibc_locale_tarball}" ${libc_src}
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fi
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return 0
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}
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# Extract uClibc
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do_libc_extract() {
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CT_Extract "${uclibc_name}-${CT_LIBC_VERSION}"
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CT_Patch "${uclibc_name}" "${CT_LIBC_VERSION}"
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# uClibc locales
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# Extracting pregen locales ourselves is kinda
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# broken, so just link it in place...
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if [ "${CT_LIBC_UCLIBC_LOCALES_PREGEN_DATA}" = "y" \
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-a ! -f "${CT_SRC_DIR}/.${uclibc_locale_tarball}.extracted" ]; then
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CT_Pushd "${CT_SRC_DIR}/${uclibc_name}-${CT_LIBC_VERSION}/extra/locale"
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CT_DoExecLog ALL ln -s "${CT_TARBALLS_DIR}/${uclibc_locale_tarball}.tgz" .
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CT_Popd
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touch "${CT_SRC_DIR}/.${uclibc_locale_tarball}.extracted"
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fi
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return 0
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}
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# Build and install headers and start files
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do_libc_start_files() {
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# Start files and Headers should be configured the same way as the
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# final libc, but built and installed differently.
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do_libc_backend libc_mode=startfiles
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}
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# This function builds and install the full C library
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do_libc() {
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do_libc_backend libc_mode=final
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}
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# Common backend for 1st and 2nd passes.
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do_libc_backend() {
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local libc_mode
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local arg
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for arg in "$@"; do
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eval "${arg// /\\ }"
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done
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case "${libc_mode}" in
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startfiles) CT_DoStep INFO "Installing C library headers & start files";;
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final) CT_DoStep INFO "Installing C library";;
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*) CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";;
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esac
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CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}"
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CT_IterateMultilibs do_libc_backend_once multilib libc_mode="${libc_mode}"
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CT_Popd
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CT_EndStep
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}
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# Common backend for 1st and 2nd passes, once per multilib.
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do_libc_backend_once() {
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local libc_mode
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local multi_dir multi_os_dir multi_root multi_flags multi_index multi_count
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local multilib_dir startfiles_dir
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local jflag=${CT_LIBC_UCLIBC_PARALLEL:+${JOBSFLAGS}}
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local -a make_args
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local extra_cflags f cfg_cflags cf
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local hdr_install_subdir
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for arg in "$@"; do
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eval "${arg// /\\ }"
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done
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CT_DoStep INFO "Building for multilib ${multi_index}/${multi_count}: '${multi_flags}'"
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# Simply copy files until uClibc has the ability to build out-of-tree
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CT_DoLog EXTRA "Copying sources to build dir"
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CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/${uclibc_name}-${CT_LIBC_VERSION}/." .
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multilib_dir="lib/${multi_os_dir}"
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startfiles_dir="${multi_root}/usr/${multilib_dir}"
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CT_SanitizeVarDir multilib_dir startfiles_dir
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# Construct make arguments:
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# - uClibc uses the CROSS environment variable as a prefix to the compiler
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# tools to use. Since it requires core pass-1, thusly named compiler is
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# already available.
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# - Note about CFLAGS: In uClibc, CFLAGS are generated by Rules.mak,
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# depending on the configuration of the library. That is, they are tailored
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# to best fit the target. So it is useless and seems to be a bad thing to
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# use LIBC_EXTRA_CFLAGS here.
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# - We do _not_ want to strip anything for now, in case we specifically
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# asked for a debug toolchain, thus the STRIPTOOL= assignment.
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make_args=( CROSS_COMPILE="${CT_TARGET}-" \
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PREFIX="${multi_root}/" \
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MULTILIB_DIR="${multilib_dir}" \
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LOCALE_DATA_FILENAME="${uclibc_locale_tarball}.tgz" \
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STRIPTOOL=true \
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${CT_LIBC_UCLIBC_VERBOSITY} \
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)
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# Force the date of the pregen locale data, as the
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# newer ones that are referenced are not available
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CT_DoLog EXTRA "Applying configuration"
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# Use the default config if the user did not provide one.
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if [ -z "${CT_LIBC_UCLIBC_CONFIG_FILE}" ]; then
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CT_LIBC_UCLIBC_CONFIG_FILE="${CT_LIB_DIR}/contrib/uClibc-defconfigs/${uclibc_name}.config"
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fi
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manage_uClibc_config "${CT_LIBC_UCLIBC_CONFIG_FILE}" .config "${multi_flags}"
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CT_DoExecLog ALL make "${make_args[@]}" olddefconfig
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# Now filter the multilib flags. manage_uClibc_config did the opposite of
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# what Rules.mak in uClibc would do: by the multilib's CFLAGS, it determined
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# the applicable configuration options. We don't want to pass the same options
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# in the UCLIBC_EXTRA_CFLAGS again (on some targets, the options do not correctly
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# override each other). On the other hand, we do not want to lose the options
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# that are not reflected in the .config.
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extra_cflags="-pipe"
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{ echo "include Rules.mak"; echo "show-cpu-flags:"; printf '\t@echo $(CPU_CFLAGS)\n'; } \
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> .show-cpu-cflags.mk
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cfg_cflags=$( make "${make_args[@]}" \
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--no-print-directory -f .show-cpu-cflags.mk show-cpu-flags )
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CT_DoExecLog ALL rm -f .show-cpu-cflags.mk
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CT_DoLog DEBUG "CPU_CFLAGS detected by uClibc: ${cfg_cflags[@]}"
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for f in ${multi_flags}; do
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for cf in ${cfg_cflags}; do
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if [ "${f}" = "${cf}" ]; then
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f=
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break
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fi
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done
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if [ -n "${f}" ]; then
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extra_cflags+=" ${f}"
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fi
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done
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CT_DoLog DEBUG "Filtered multilib CFLAGS: ${extra_cflags}"
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make_args+=( UCLIBC_EXTRA_CFLAGS="${extra_cflags}" )
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# uClibc does not have a way to select the installation subdirectory for headers,
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# it is always $(DEVEL_PREFIX)/include. Also, we're reinstalling the headers
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# at the final stage (see the note below), we may already have the subdirectory
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# in /usr/include.
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CT_DoArchUClibcHeaderDir hdr_install_subdir "${multi_flags}"
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if [ -n "${hdr_install_subdir}" ]; then
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CT_DoExecLog ALL cp -a "${multi_root}/usr/include" "${multi_root}/usr/include.saved"
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fi
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if [ "${libc_mode}" = "startfiles" ]; then
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CT_DoLog EXTRA "Building headers"
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CT_DoExecLog ALL make "${make_args[@]}" headers
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# Ensure the directory for installing multilib-specific binaries exists.
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CT_DoExecLog ALL mkdir -p "${startfiles_dir}"
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CT_DoLog EXTRA "Installing headers"
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CT_DoExecLog ALL make "${make_args[@]}" install_headers
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# The check might look bogus, but it is the same condition as is used
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# by GCC build script to enable/disable shared library support.
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if [ "${CT_THREADS}" = "nptl" ]; then
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CT_DoLog EXTRA "Building start files"
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CT_DoExecLog ALL make ${jflag} "${make_args[@]}" \
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lib/crt1.o lib/crti.o lib/crtn.o
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# From: http://git.openembedded.org/cgit.cgi/openembedded/commit/?id=ad5668a7ac7e0436db92e55caaf3fdf782b6ba3b
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# libm.so is needed for ppc, as libgcc is linked against libm.so
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# No problem to create it for other archs.
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CT_DoLog EXTRA "Building dummy shared libs"
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CT_DoExecLog ALL "${CT_TARGET}-${CT_CC}" -nostdlib -nostartfiles \
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-shared ${multi_flags} -x c /dev/null -o libdummy.so
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CT_DoLog EXTRA "Installing start files"
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CT_DoExecLog ALL install -m 0644 lib/crt1.o lib/crti.o lib/crtn.o \
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"${startfiles_dir}"
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CT_DoLog EXTRA "Installing dummy shared libs"
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CT_DoExecLog ALL install -m 0755 libdummy.so "${startfiles_dir}/libc.so"
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CT_DoExecLog ALL install -m 0755 libdummy.so "${startfiles_dir}/libm.so"
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fi # CT_THREADS == nptl
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fi # libc_mode == startfiles
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if [ "${libc_mode}" = "final" ]; then
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CT_DoLog EXTRA "Cleaning up startfiles"
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CT_DoExecLog ALL rm -f "${startfiles_dir}/crt1.o" \
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"${startfiles_dir}/crti.o" \
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"${startfiles_dir}/crtn.o" \
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"${startfiles_dir}/libc.so" \
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"${startfiles_dir}/libm.so"
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CT_DoLog EXTRA "Building C library"
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CT_DoExecLog ALL make "${make_args[@]}" pregen
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CT_DoExecLog ALL make ${jflag} "${make_args[@]}" all
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# YEM-FIXME:
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# - we want to install 'runtime' files, eg. lib*.{a,so*}, crti.o and
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# such files, except the headers as they already are installed
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# - "make install_dev" installs the headers, the crti.o... and the
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# static libs, but not the dynamic libs
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# - "make install_runtime" installs the dynamic libs only
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# - "make install" calls install_runtime and install_dev
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# - so we're left with re-installing the headers... Sigh...
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CT_DoLog EXTRA "Installing C library"
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CT_DoExecLog ALL make "${make_args[@]}" install install_utils
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fi # libc_mode == final
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# Now, if installing headers into a subdirectory, put everything in its place.
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# Remove the header subdirectory if it existed already.
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if [ -n "${hdr_install_subdir}" ]; then
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CT_DoExecLog ALL mv "${multi_root}/usr/include" "${multi_root}/usr/include.new"
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CT_DoExecLog ALL mv "${multi_root}/usr/include.saved" "${multi_root}/usr/include"
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CT_DoExecLog ALL rm -rf "${multi_root}/usr/include/${hdr_install_subdir}"
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CT_DoExecLog ALL mv "${multi_root}/usr/include.new" "${multi_root}/usr/include/${hdr_install_subdir}"
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fi
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CT_EndStep
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}
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# Initialises the .config file to sensible values
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# $1: original file
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# $2: modified file
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manage_uClibc_config() {
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src="$1"
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dst="$2"
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flags="$3"
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# Start with fresh files
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CT_DoExecLog ALL cp "${src}" "${dst}"
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case "${CT_ARCH_ENDIAN}" in
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big)
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CT_KconfigDisableOption "ARCH_LITTLE_ENDIAN" "${dst}"
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CT_KconfigDisableOption "ARCH_WANTS_LITTLE_ENDIAN" "${dst}"
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CT_KconfigEnableOption "ARCH_BIG_ENDIAN" "${dst}"
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CT_KconfigEnableOption "ARCH_WANTS_BIG_ENDIAN" "${dst}"
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;;
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little)
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CT_KconfigDisableOption "ARCH_BIG_ENDIAN" "${dst}"
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CT_KconfigDisableOption "ARCH_WANTS_BIG_ENDIAN" "${dst}"
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CT_KconfigEnableOption "ARCH_LITTLE_ENDIAN" "${dst}"
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CT_KconfigEnableOption "ARCH_WANTS_LITTLE_ENDIAN" "${dst}"
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;;
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esac
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if [ "${CT_ARCH_USE_MMU}" = "y" ]; then
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CT_KconfigEnableOption "ARCH_USE_MMU" "${dst}"
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else
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CT_KconfigDisableOption "ARCH_USE_MMU" "${dst}"
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fi
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if [ "${CT_SHARED_LIBS}" = "y" ]; then
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CT_KconfigEnableOption "HAVE_SHARED" "${dst}"
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else
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CT_KconfigDisableOption "HAVE_SHARED" "${dst}"
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fi
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# Accomodate for old and new uClibc version, where the
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# way to select between hard/soft float has changed
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case "${CT_ARCH_FLOAT}" in
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hard|softfp)
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CT_KconfigEnableOption "UCLIBC_HAS_FPU" "${dst}"
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CT_KconfigEnableOption "UCLIBC_HAS_FLOATS" "${dst}"
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;;
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soft)
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CT_KconfigDisableOption "UCLIBC_HAS_FPU" "${dst}"
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CT_KconfigEnableOption "UCLIBC_HAS_FLOATS" "${dst}"
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CT_KconfigEnableOption "DO_C99_MATH" "${dst}"
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;;
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esac
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if [ "${CT_LIBC_UCLIBC_FENV}" = "y" ]; then
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CT_KconfigEnableOption "UCLIBC_HAS_FENV" "${dst}"
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else
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CT_KconfigDisableOption "UCLIBC_HAS_FENV" "${dst}"
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fi
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if [ "${CT_LIBC_UCLIBC_RPC}" = "y" ]; then
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CT_KconfigEnableOption "UCLIBC_HAS_RPC" "${dst}"
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else
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CT_KconfigDisableOption "UCLIBC_HAS_RPC" "${dst}"
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fi
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# We always want ctor/dtor
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CT_KconfigEnableOption "UCLIBC_CTOR_DTOR" "${dst}"
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# Change paths to work with crosstool-NG
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#
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# DEVEL_PREFIX is left as '/usr/' because it is post-pended to $PREFIX,
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# which is the correct value of ${PREFIX}/${TARGET}.
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CT_KconfigSetOption "DEVEL_PREFIX" "\"/usr/\"" "${dst}"
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CT_KconfigSetOption "RUNTIME_PREFIX" "\"/\"" "${dst}"
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CT_KconfigSetOption "KERNEL_HEADERS" "\"${CT_HEADERS_DIR}\"" "${dst}"
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# Locales support
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# Note that the two PREGEN_LOCALE and the XLOCALE lines may be missing
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# entirely if LOCALE is not set. If LOCALE was already set, we'll
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# assume the user has already made all the appropriate generation
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# arrangements. Note that having the uClibc Makefile download the
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# pregenerated locales is not compatible with crosstool; besides,
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# crosstool downloads them as part of getandpatch.sh.
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CT_KconfigDeleteOption "UCLIBC_DOWNLOAD_PREGENERATED_LOCALE" "${dst}"
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case "${CT_LIBC_UCLIBC_LOCALES}:${CT_LIBC_UCLIBC_LOCALES_PREGEN_DATA}" in
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:*)
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;;
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y:)
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CT_KconfigEnableOption "UCLIBC_HAS_LOCALE" "${dst}"
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CT_KconfigDeleteOption "UCLIBC_PREGENERATED_LOCALE_DATA" "${dst}"
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CT_KconfigDeleteOption "UCLIBC_DOWNLOAD_PREGENERATED_LOCALE_DATA" \
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"${dst}"
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CT_KconfigDeleteOption "UCLIBC_HAS_XLOCALE" "${dst}"
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;;
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y:y)
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CT_KconfigEnableOption "UCLIBC_HAS_LOCALE" "${dst}"
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CT_KconfigEnableOption "UCLIBC_PREGENERATED_LOCALE_DATA" "${dst}"
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CT_KconfigDeleteOption "UCLIBC_DOWNLOAD_PREGENERATED_LOCALE_DATA" \
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"${dst}"
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CT_KconfigDeleteOption "UCLIBC_HAS_XLOCALE" "${dst}"
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;;
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esac
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# WCHAR support
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if [ "${CT_LIBC_UCLIBC_WCHAR}" = "y" ]; then
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CT_KconfigEnableOption "UCLIBC_HAS_WCHAR" "${dst}"
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else
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CT_KconfigDisableOption "UCLIBC_HAS_WCHAR" "${dst}"
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fi
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# IPv6 support
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if [ "${CT_LIBC_UCLIBC_IPV6}" = "y" ]; then
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CT_KconfigEnableOption "UCLIBC_HAS_IPV6" "${dst}"
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else
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CT_KconfigDisableOption "UCLIBC_HAS_IPV6" "${dst}"
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fi
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# Force on options needed for C++ if we'll be making a C++ compiler.
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# I'm not sure locales are a requirement for doing C++... Are they?
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if [ "${CT_CC_LANG_CXX}" = "y" ]; then
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CT_KconfigEnableOption "DO_C99_MATH" "${dst}"
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CT_KconfigEnableOption "UCLIBC_HAS_GNU_GETOPT" "${dst}"
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fi
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# Stack Smash Protection (SSP)
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if [ "${CT_CC_GCC_LIBSSP}" = "y" ]; then
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CT_KconfigEnableOption "UCLIBC_HAS_SSP" "${dst}"
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CT_KconfigEnableOption "UCLIBC_BUILD_SSP" "${dst}"
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else
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CT_KconfigDisableOption "UCLIBC_HAS_SSP" "${dst}"
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CT_KconfigDisableOption "UCLIBC_BUILD_SSP" "${dst}"
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fi
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# Push the threading model
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CT_KconfigDisableOption "UCLIBC_HAS_THREADS" "${dst}"
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CT_KconfigDisableOption "LINUXTHREADS_OLD" "${dst}"
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CT_KconfigDisableOption "LINUXTHREADS_NEW" "${dst}"
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CT_KconfigDisableOption "UCLIBC_HAS_THREADS_NATIVE" "${dst}"
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case "${CT_THREADS}:${CT_LIBC_UCLIBC_LNXTHRD}" in
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none:)
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;;
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linuxthreads:)
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# Newer version of uClibc-ng, no old/new dichotomy
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CT_KconfigEnableOption "UCLIBC_HAS_THREADS" "${dst}"
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CT_KconfigEnableOption "UCLIBC_HAS_LINUXTHREADS" "${dst}"
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;;
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linuxthreads:old)
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CT_KconfigEnableOption "UCLIBC_HAS_THREADS" "${dst}"
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CT_KconfigEnableOption "LINUXTHREADS_OLD" "${dst}"
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;;
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linuxthreads:new)
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CT_KconfigEnableOption "UCLIBC_HAS_THREADS" "${dst}"
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CT_KconfigEnableOption "LINUXTHREADS_NEW" "${dst}"
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;;
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nptl:)
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CT_KconfigEnableOption "UCLIBC_HAS_THREADS" "${dst}"
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CT_KconfigEnableOption "UCLIBC_HAS_THREADS_NATIVE" "${dst}"
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;;
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*)
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CT_Abort "Incorrect thread settings: CT_THREADS='${CT_THREAD}' CT_LIBC_UCLIBC_LNXTHRD='${CT_LIBC_UCLIBC_LNXTHRD}'"
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;;
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esac
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# Always build the libpthread_db
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CT_KconfigEnableOption "PTHREADS_DEBUG_SUPPORT" "${dst}"
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# Force on debug options if asked for
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CT_KconfigDisableOption "DODEBUG" "${dst}"
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CT_KconfigDisableOption "DODEBUG_PT" "${dst}"
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CT_KconfigDisableOption "DOASSERTS" "${dst}"
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CT_KconfigDisableOption "SUPPORT_LD_DEBUG" "${dst}"
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CT_KconfigDisableOption "SUPPORT_LD_DEBUG_EARLY" "${dst}"
|
|
CT_KconfigDisableOption "UCLIBC_MALLOC_DEBUGGING" "${dst}"
|
|
case "${CT_LIBC_UCLIBC_DEBUG_LEVEL}" in
|
|
0)
|
|
;;
|
|
1)
|
|
CT_KconfigEnableOption "DODEBUG" "${dst}"
|
|
;;
|
|
2)
|
|
CT_KconfigEnableOption "DODEBUG" "${dst}"
|
|
CT_KconfigEnableOption "DOASSERTS" "${dst}"
|
|
CT_KconfigEnableOption "SUPPORT_LD_DEBUG" "${dst}"
|
|
CT_KconfigEnableOption "UCLIBC_MALLOC_DEBUGGING" "${dst}"
|
|
;;
|
|
3)
|
|
CT_KconfigEnableOption "DODEBUG" "${dst}"
|
|
CT_KconfigEnableOption "DODEBUG_PT" "${dst}"
|
|
CT_KconfigEnableOption "DOASSERTS" "${dst}"
|
|
CT_KconfigEnableOption "SUPPORT_LD_DEBUG" "${dst}"
|
|
CT_KconfigEnableOption "SUPPORT_LD_DEBUG_EARLY" "${dst}"
|
|
CT_KconfigEnableOption "UCLIBC_MALLOC_DEBUGGING" "${dst}"
|
|
;;
|
|
esac
|
|
|
|
# Remove stripping: its the responsibility of the
|
|
# firmware builder to strip or not.
|
|
CT_KconfigDisableOption "DOSTRIP" "${dst}"
|
|
|
|
# Now allow architecture to tweak as it wants
|
|
CT_DoArchUClibcConfig "${dst}"
|
|
CT_DoArchUClibcCflags "${dst}" "${flags}"
|
|
}
|
|
|
|
do_libc_post_cc() {
|
|
# uClibc and GCC disagree where the dynamic linker lives. uClibc always
|
|
# places it in the MULTILIB_DIR, while gcc does that for *some* variants
|
|
# and expects it in /lib for the other. So, create a symlink from lib
|
|
# to the actual location, but only if that will not override the actual
|
|
# file in /lib. Thus, need to do this after all the variants are built.
|
|
# Moreover, need to do this after the final compiler is built: on targets
|
|
# that use elf2flt, the core compilers cannot find ld when running elf2flt.
|
|
CT_MultilibFixupLDSO
|
|
}
|