Cherry-picked from: bitcoin/bitcoin 3272e34f
and bitcoin/bitcoin cc25f892
and bitcoin/bitcoin a33381ac
Conflicts resolved:
- removed ci script and guix file changes that we don't have
- removed changes to libxcb
- squashed commits as cc25f892 was a fixup
- rewrote the change to depends/README
Co-authored-by: fanquake <fanquake@gmail.com>
Co-authored-by: W. J. van der Laan <laanwj@protonmail.com>
Ubuntu 16.04 "xenial xerus" does not come with Python 2.x by default.
It is possible to install a python-2.7 package, but this has its own
problem: no `python` or `python2` symlink (see #7717).
This fixes the following scripts to work with python 3:
- `make check` (bctest,py, bitcoin-util-test.py)
- `make translate` (extract_strings_qt.py)
- `make symbols-check` (symbol-check.py)
- `make security-check` (security-check.py)
Explicitly call the python commands using $(PYTHON) instead
of relying on the interpreter line at the top of the scripts.
Perform the following ELF security checks:
- PIE: Check for position independent executable (PIE), allowing for address space randomization
- NX: Check that no sections are writable and executable (including the stack)
- RELRO: Check for read-only relocations, binding at startup
- Canary: Check for use of stack canary
Also add a check to symbol-check.py that checks that only the subset of
allowed libraries is imported (to avoid incompatibilities).
Add 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.
