This directory contains tools for developers working on this repository.
github-merge.sh
-----------------
+==================
A small script to automate merging pull-requests securely and sign them with GPG.
git config githubmerge.testcmd "make -j4 check" (adapt to whatever you want to use for testing)
git config --global user.signingkey mykeyid (if you want to GPG sign)
-## fix-copyright-headers.py
+fix-copyright-headers.py
+===========================
Every year newly updated files need to have its copyright headers updated to reflect the current year.
If you run this script from src/ it will automatically update the year on the copyright header for all
```// Copyright (c) 2009-2013 The Bitcoin developers```
would be changed to:
-```// Copyright (c) 2009-2014 The Bitcoin developers```
\ No newline at end of file
+```// Copyright (c) 2009-2014 The Bitcoin developers```
+
+symbol-check.py
+==================
+
+A script to check that the (Linux) executables produced by gitian only contain
+allowed gcc, glibc and libstdc++ version symbols. This makes sure they are
+still compatible with the minimum supported Linux distribution versions.
+
+Example usage after a gitian build:
+
+ find ../gitian-builder/build -type f -executable | xargs python contrib/devtools/symbol-check.py
+
+If only supported symbols are used the return value will be 0 and the output will be empty.
+
+If there are 'unsupported' symbols, the return value will be 1 a list like this will be printed:
+
+ .../64/test_bitcoin: symbol memcpy from unsupported version GLIBC_2.14
+ .../64/test_bitcoin: symbol __fdelt_chk from unsupported version GLIBC_2.15
+ .../64/test_bitcoin: symbol std::out_of_range::~out_of_range() from unsupported version GLIBCXX_3.4.15
+ .../64/test_bitcoin: symbol _ZNSt8__detail15_List_nod from unsupported version GLIBCXX_3.4.15
+
--- /dev/null
+#!/usr/bin/python
+# Copyright (c) 2014 Wladimir J. van der Laan
+# Distributed under the MIT/X11 software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+'''
+A script to check that the (Linux) executables produced by gitian only contain
+allowed gcc, glibc and libstdc++ version symbols. This makes sure they are
+still compatible with the minimum supported Linux distribution versions.
+
+Example usage:
+
+ find ../gitian-builder/build -type f -executable | xargs python contrib/devtools/symbol-check.py
+'''
+from __future__ import division, print_function
+import subprocess
+import re
+import sys
+
+# Debian 6.0.9 (Squeeze) has:
+#
+# - g++ version 4.4.5 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=g%2B%2B)
+# - libc version 2.11.3 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=libc6)
+# - libstdc++ version 4.4.5 (https://packages.debian.org/search?suite=default§ion=all&arch=any&searchon=names&keywords=libstdc%2B%2B6)
+#
+# Ubuntu 10.04.4 (Lucid Lynx) has:
+#
+# - g++ version 4.4.3 (http://packages.ubuntu.com/search?keywords=g%2B%2B&searchon=names&suite=lucid§ion=all)
+# - libc version 2.11.1 (http://packages.ubuntu.com/search?keywords=libc6&searchon=names&suite=lucid§ion=all)
+# - libstdc++ version 4.4.3 (http://packages.ubuntu.com/search?suite=lucid§ion=all&arch=any&keywords=libstdc%2B%2B&searchon=names)
+#
+# Taking the minimum of these as our target.
+#
+# According to GNU ABI document (http://gcc.gnu.org/onlinedocs/libstdc++/manual/abi.html) this corresponds to:
+# GCC 4.4.0: GCC_4.4.0
+# GCC 4.4.2: GLIBCXX_3.4.13, CXXABI_1.3.3
+# (glibc) GLIBC_2_11
+#
+MAX_VERSIONS = {
+'GCC': (4,4,0),
+'CXXABI': (1,3,3),
+'GLIBCXX': (3,4,13),
+'GLIBC': (2,11)
+}
+READELF_CMD = '/usr/bin/readelf'
+CPPFILT_CMD = '/usr/bin/c++filt'
+
+class CPPFilt(object):
+ '''
+ Demangle C++ symbol names.
+
+ Use a pipe to the 'c++filt' command.
+ '''
+ def __init__(self):
+ self.proc = subprocess.Popen(CPPFILT_CMD, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+
+ def __call__(self, mangled):
+ self.proc.stdin.write(mangled + '\n')
+ return self.proc.stdout.readline().rstrip()
+
+ def close(self):
+ self.proc.stdin.close()
+ self.proc.stdout.close()
+ self.proc.wait()
+
+def read_symbols(executable, imports=True):
+ '''
+ Parse an ELF executable and return a list of (symbol,version) tuples
+ for dynamic, imported symbols.
+ '''
+ p = subprocess.Popen([READELF_CMD, '--dyn-syms', '-W', executable], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
+ (stdout, stderr) = p.communicate()
+ if p.returncode:
+ raise IOError('Could not read symbols for %s: %s' % (executable, stderr.strip()))
+ syms = []
+ for line in stdout.split('\n'):
+ line = line.split()
+ if len(line)>7 and re.match('[0-9]+:$', line[0]):
+ (sym, _, version) = line[7].partition('@')
+ is_import = line[6] == 'UND'
+ if version.startswith('@'):
+ version = version[1:]
+ if is_import == imports:
+ syms.append((sym, version))
+ return syms
+
+def check_version(max_versions, version):
+ if '_' in version:
+ (lib, _, ver) = version.rpartition('_')
+ else:
+ lib = version
+ ver = '0'
+ ver = tuple([int(x) for x in ver.split('.')])
+ if not lib in max_versions:
+ return False
+ return ver <= max_versions[lib]
+
+if __name__ == '__main__':
+ cppfilt = CPPFilt()
+ retval = 0
+ for filename in sys.argv[1:]:
+ for sym,version in read_symbols(filename, True):
+ if version and not check_version(MAX_VERSIONS, version):
+ print('%s: symbol %s from unsupported version %s' % (filename, cppfilt(sym), version))
+ retval = 1
+
+ exit(retval)
+
+
projects / VerusCoin.git / commitdiff