Update contrib/devtools/symbol-check.py
Signed-off-by: Daira Hopwood <daira@jacaranda.org>
This commit is contained in:
Daira Hopwood
str4d
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#!/usr/bin/env python
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# Copyright (c) 2014 Wladimir J. van der Laan
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# Copyright (c) 2016-2019 The Zcash developers
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# Copyright (c) 2016-2020 The Zcash developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or https://www.opensource.org/licenses/mit-license.php .
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'''
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A script to check that the (Linux) executables produced by gitian only contain
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allowed gcc, glibc and libstdc++ version symbols. This makes sure they are
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still compatible with the minimum supported Linux distribution versions.
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allowed gcc and glibc version symbols. This makes sure they are still compatible
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with the minimum supported Linux distribution versions.
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Example usage:
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@ -18,55 +18,73 @@ import re
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import sys
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import os
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# Debian 6.0.9 (Squeeze) has:
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# Ubuntu 16.04 LTS (Xenial Xerus; End of Standard Support April 2021, EOL April 2022) has:
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#
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# - g++ version 4.4.5 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=g%2B%2B)
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# - libc version 2.11.3 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=libc6)
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# - libstdc++ version 4.4.5 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=libstdc%2B%2B6)
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# - g++ version 4.5.3 (https://packages.ubuntu.com/search?suite=all&searchon=names&keywords=g%2B%2B)
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# - libc6 version 2.23 (https://packages.ubuntu.com/search?suite=all&searchon=names&keywords=libc6)
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#
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# Ubuntu 10.04.4 (Lucid Lynx) has:
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# Debian 9 (Stretch; EOL 2020-07-06, LTS EOL in 2022) has:
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#
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# - g++ version 4.4.3 (http://packages.ubuntu.com/search?keywords=g%2B%2B&searchon=names&suite=lucid§ion=all)
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# - libc version 2.11.1 (http://packages.ubuntu.com/search?keywords=libc6&searchon=names&suite=lucid§ion=all)
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# - libstdc++ version 4.4.3 (http://packages.ubuntu.com/search?suite=lucid§ion=all&arch=any&keywords=libstdc%2B%2B&searchon=names)
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# - g++ version 6.3.0 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=g%2B%2B)
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# - libc6 version 2.24 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=libc6)
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#
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# Taking the minimum of these as our target.
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# CentOS 8 (Full update EOL May 2024, Maintenance EOL 2029-05-31) has:
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#
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# According to GNU ABI document (http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html) this corresponds to:
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# GCC 4.4.0: GCC_4.4.0
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# GCC 4.4.2: GLIBCXX_3.4.13, CXXABI_1.3.3
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# (glibc) GLIBC_2_11
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# - g++ version 8.3.1 (http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/ search for libgcc)
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# - libc6 version 2.28 (http://mirror.centos.org/centos/8/BaseOS/x86_64/os/Packages/ search for glibc)
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#
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# Arch is a rolling release, and as of October 2020 has packages for:
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#
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# - g++ version 8.4.0 / 9.3.0 / 10.2.0 (https://www.archlinux.org/packages/?q=gcc)
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# - libc6 version 2.32 (https://www.archlinux.org/packages/?q=glibc)
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#
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# We take the minimum of these as our target. In practice, if we build on Xenial without
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# upgrading GCC or libc, then we should get a binary that works for all these systems, and
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# later ones.
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#
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# According to the GNU ABI document (http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html) this corresponds to:
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# GCC 4.5.3: GCC_4.5.0, GLIBCXX_3.4.14, CXXABI_1.3.4
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# libc6: GLIBC_2_23
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# We statically link libc++ and libc++abi in our builds. Set this to allow dynamic linking to libstdc++.
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ALLOW_DYNAMIC_LIBSTDCXX = False
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MAX_VERSIONS = {
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'GCC': (4,4,0),
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'CXXABI': (1,3,3),
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'GLIBCXX': (3,4,13),
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'GLIBC': (2,11)
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'GCC': (4,5,0),
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'GLIBC': (2,23),
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}
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if ALLOW_DYNAMIC_LIBSTDCXX:
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MAX_VERSIONS.update({
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'GLIBCXX': (3,4,14),
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'CXXABI': (1,3,4),
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})
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# See here for a description of _IO_stdin_used:
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# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=634261#109
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# Ignore symbols that are exported as part of every executable
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IGNORE_EXPORTS = {
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'_edata', '_end', '_init', '__bss_start', '_fini', '_IO_stdin_used'
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'_edata', '_end', '_init', '__bss_start', '_fini', '_IO_stdin_used'
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}
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READELF_CMD = os.getenv('READELF', '/usr/bin/readelf')
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CPPFILT_CMD = os.getenv('CPPFILT', '/usr/bin/c++filt')
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# Allowed NEEDED libraries
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ALLOWED_LIBRARIES = {
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# zcashd
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'libgcc_s.so.1', # GCC base support
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'libc.so.6', # C library
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'libstdc++.so.6', # C++ standard library
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'libpthread.so.0', # threading
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'libanl.so.1', # DNS resolve
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'libm.so.6', # math library
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'librt.so.1', # real-time (clock)
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'libgomp.so.1', # OpenMP support library
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'ld-linux-x86-64.so.2', # 64-bit dynamic linker
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'ld-linux.so.2', # 32-bit dynamic linker
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'libdl.so.2' # programming interface to dynamic linker
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# zcashd
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'libgcc_s.so.1', # GCC support library (also used by clang)
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'libc.so.6', # C library
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'libpthread.so.0', # threading
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'libanl.so.1', # DNS resolver
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'libm.so.6', # math library
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'librt.so.1', # real-time (POSIX compatibility)
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'ld-linux-x86-64.so.2', # 64-bit dynamic linker
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'ld-linux.so.2', # 32-bit dynamic linker
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'libdl.so.2' # programming interface to dynamic linker
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}
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if ALLOW_DYNAMIC_LIBSTDCXX:
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ALLOWED_LIBRARIES.add('libstdc++.so.6') # C++ standard library
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class CPPFilt(object):
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'''
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@ -138,6 +156,7 @@ if __name__ == '__main__':
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cppfilt = CPPFilt()
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retval = 0
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for filename in sys.argv[1:]:
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print("Checking %s..." % (filename,))
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# Check imported symbols
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for sym,version in read_symbols(filename, True):
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if version and not check_version(MAX_VERSIONS, version):
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@ -154,7 +173,12 @@ if __name__ == '__main__':
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if library_name not in ALLOWED_LIBRARIES:
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print('%s: NEEDED library %s is not allowed' % (filename, library_name))
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retval = 1
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print()
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if retval == 0:
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print("Everything OK")
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else:
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print("Note: this script is intended to ensure that Gitian builds meet our compatibility policy.")
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print("The above warnings do not necessarily mean the program(s) will not work on your system.")
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exit(retval)
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