runtime目录下的库是从aarch64-none-linux-gnu/libc下整理拷贝的。

lib.tar.bz2的结构如下：

lib/
lib64 -> lib
lib/ld-linux-aarch64.so.1
lib/ld-2.33.so
lib/libthread_db-1.0.so
lib/librt.so.1
lib/libutil.so
lib/libnss_db-2.33.so
lib/libitm.so.1.0.0
lib/libnss_dns.so
lib/libatomic.so.1
lib/libSegFault.so
lib/libgfortran.so.5
lib/libgcc_s.so.1
lib/libdl-2.33.so
lib/libgfortran.so.5.0.0
lib/libBrokenLocale.so.1
lib/libm-2.33.so
lib/libasan.so
lib/libBrokenLocale-2.33.so
lib/libc.so.6
lib/libgomp.so.1
lib/librt-2.33.so
lib/librt.so
lib/libnsl-2.33.so
lib/libasan.so.6
lib/libpthread.so
lib/libatomic.so
lib/libpthread-2.33.so
lib/libgomp.so.1.0.0
lib/libdl.so.2
lib/libtsan.so
lib/libnss_db.so.2
lib/libanl.so
lib/libc.so
lib/libnss_compat.so
lib/libnsl.so.1
lib/libc-2.33.so
lib/libutil-2.33.so
lib/libanl-2.33.so
lib/libm.so.6
lib/libmemusage.so
lib/libdl.so
lib/liblsan.so
lib/libubsan.so.1.0.0
lib/libnss_files.so
lib/libresolv.so.2
lib/libnss_dns.so.2
lib/liblsan.so.0.0.0
lib/libBrokenLocale.so
lib/liblsan.so.0
lib/libstdc++.so.6.0.28
lib/audit/
lib/audit/sotruss-lib.so
lib/libcrypt.so
lib/libcrypt.so.1
lib/libstdc++.so.6
lib/libatomic.so.1.2.0
lib/libgomp.so
lib/libasan.so.6.0.0
lib/libpthread.so.0
lib/libnss_hesiod.so
lib/libnss_files-2.33.so
lib/libnss_hesiod.so.2
lib/libtsan.so.0
lib/libstdc++.so
lib/libcrypt-2.33.so
lib/libthread_db.so.1
lib/libresolv.so
lib/libnss_compat-2.33.so
lib/libthread_db.so
lib/libgcc_s.so
lib/libgfortran.so
lib/libubsan.so
lib/libnss_dns-2.33.so
lib/libnss_hesiod-2.33.so
lib/libresolv-2.33.so
lib/libnss_files.so.2
lib/libnss_compat.so.2
lib/libpcprofile.so
lib/libnss_db.so
lib/libanl.so.1
lib/libutil.so.1
lib/libtsan.so.0.0.0
lib/libubsan.so.1
lib/libinproctrace.so