diff options
Diffstat (limited to 'scripts/build/libc/musl.sh')
| -rw-r--r-- | scripts/build/libc/musl.sh | 113 |
1 files changed, 73 insertions, 40 deletions
diff --git a/scripts/build/libc/musl.sh b/scripts/build/libc/musl.sh index 2699d795..2a0c04fd 100644 --- a/scripts/build/libc/musl.sh +++ b/scripts/build/libc/musl.sh @@ -16,10 +16,6 @@ do_libc_extract() { CT_Patch "musl" "${CT_LIBC_VERSION}" } -do_libc_check_config() { - : -} - # Build and install headers and start files do_libc_start_files() { # Start files and Headers should be configured the same way as the @@ -36,36 +32,51 @@ do_libc_post_cc() { : } +do_libc_backend() { + local libc_mode + local arg + + for arg in "$@"; do + eval "${arg// /\\ }" + done + + case "${libc_mode}" in + startfiles) CT_DoStep INFO "Installing C library headers & start files";; + final) CT_DoStep INFO "Installing C library";; + *) CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";; + esac + + CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}" + CT_IterateMultilibs do_libc_backend_once multilib libc_mode="${libc_mode}" + CT_Popd + CT_EndStep +} + # This backend builds the C library # Usage: do_libc_backend param=value [...] # Parameter : Definition : Type : Default # libc_mode : 'startfiles' or 'final' : string : (none) -do_libc_backend() { +do_libc_backend_once() { local libc_mode local -a extra_cflags local -a extra_config local src_dir="${CT_SRC_DIR}/${CT_LIBC}-${CT_LIBC_VERSION}" - local libc_headers libc_startfiles libc_full + local multi_dir multi_os_dir multi_root multi_flags multi_index multi_count + local multilib_dir + local hdr_install_subdir + local arg f l for arg in "$@"; do eval "${arg// /\\ }" done - case "${libc_mode}" in - startfiles) - CT_DoStep INFO "Installing C library headers & start files" - libc_headers=y - libc_startfiles=y - libc_full= - ;; - final) - CT_DoStep INFO "Installing C library" - libc_headers= - libc_startfiles= - libc_full=y - ;; - *) CT_Abort "Unsupported (or unset) libc_mode='${libc_mode}'";; - esac + CT_DoStep INFO "Building for multilib ${multi_index}/${multi_count}: '${multi_flags}'" + + multilib_dir="/usr/lib/${multi_os_dir}" + CT_SanitizeVarDir multilib_dir + CT_DoExecLog ALL mkdir -p "${multi_root}${multilib_dir}" + + extra_cflags=( ${multi_flags} ) # From buildroot: # gcc constant folding bug with weak aliases workaround @@ -84,42 +95,64 @@ do_libc_backend() { extra_config+=( "--enable-optimize=${CT_LIBC_MUSL_OPTIMIZE}" ) - CT_mkdir_pushd "${CT_BUILD_DIR}/build-libc-${libc_mode}" + # Same problem as with uClibc: different variants sometimes have + # incompatible headers. + CT_DoArchMUSLHeaderDir hdr_install_subdir "${multi_flags}" + if [ -n "${hdr_install_subdir}" ]; then + extra_config+=( "--includedir=/usr/include/${hdr_install_subdir}" ) + fi # NOTE: musl handles the build/host/target a little bit differently # then one would expect: # build : not used - # host : the machine building musl + # host : same as --target # target : the machine musl runs on - CT_DoExecLog CFG \ - CFLAGS="${extra_cflags[@]}" \ - CROSS_COMPILE="${CT_TARGET}-" \ - ${src_dir}/configure \ - --host="${CT_TARGET}" \ - --target="${CT_TARGET}" \ - --prefix="/usr" \ - --disable-gcc-wrapper \ + CT_DoExecLog CFG \ + CFLAGS="${extra_cflags[*]}" \ + CROSS_COMPILE="${CT_TARGET}-" \ + ${src_dir}/configure \ + --host="${multi_target}" \ + --target="${multi_target}" \ + --prefix="/usr" \ + --libdir="${multilib_dir}" \ + --disable-gcc-wrapper \ "${extra_config[@]}" - if [ "${libc_headers}" = "y" ]; then + if [ "${libc_mode}" = "startfiles" ]; then CT_DoLog EXTRA "Installing C library headers" - CT_DoExecLog ALL ${make} DESTDIR="${CT_SYSROOT_DIR}" install-headers - fi - if [ "${libc_startfiles}" = "y" ]; then + CT_DoExecLog ALL ${make} DESTDIR="${multi_root}" install-headers CT_DoLog EXTRA "Building C library start files" - CT_DoExecLog ALL ${make} DESTDIR="${CT_SYSROOT_DIR}" \ + CT_DoExecLog ALL ${make} DESTDIR="${multi_root}" \ obj/crt/crt1.o obj/crt/crti.o obj/crt/crtn.o CT_DoLog EXTRA "Installing C library start files" - CT_DoExecLog ALL cp -av obj/crt/crt*.o "${CT_SYSROOT_DIR}/usr/lib" + CT_DoExecLog ALL cp -av obj/crt/crt*.o "${multi_root}${multilib_dir}" CT_DoExecLog ALL ${CT_TARGET}-gcc -nostdlib \ - -nostartfiles -shared -x c /dev/null -o "${CT_SYSROOT_DIR}/usr/lib/libc.so" + -nostartfiles -shared -x c /dev/null -o "${multi_root}${multilib_dir}/libc.so" fi - if [ "${libc_full}" = "y" ]; then + if [ "${libc_mode}" = "final" ]; then + CT_DoLog EXTRA "Cleaning up start files" + CT_DoExecLog ALL rm -f "${multi_root}${multilib_dir}/crt1.o" \ + "${multi_root}${multilib_dir}/crti.o" \ + "${multi_root}${multilib_dir}/crtn.o" \ + "${multi_root}${multilib_dir}/libc.so" + CT_DoLog EXTRA "Building C library" CT_DoExecLog ALL ${make} ${JOBSFLAGS} CT_DoLog EXTRA "Installing C library" - CT_DoExecLog ALL ${make} DESTDIR="${CT_SYSROOT_DIR}" install + CT_DoExecLog ALL ${make} DESTDIR="${multi_root}" install + + # Convert /lib/ld-* symlinks to relative paths so that they are valid + # both on the host and on the target. + for f in ${multi_root}/ld-musl-*; do + [ -L "${f}" ] || continue + l=$( readlink ${f} ) + case "${l}" in + ${multilib_dir}/*) + CT_DoExecLog ALL ln -sf "../${l}" "${f}" + ;; + esac + done fi CT_EndStep |