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hardened-c++

Langue: en

Autres versions - même langue

Version: 332315 (ubuntu - 24/10/10)

Section: 1 (Commandes utilisateur)

NAME

hardened-c++ - g++ wrapper to enforce hardening toolchain improvements

SYNOPSIS

export DEB_BUILD_HARDENING=1

g++ ...

DESCRIPTION

The hardened-c++ wrapper is normally used by calling g++ as usual when DEB_BUILD_HARDENING is set to 1. It will configure the necessary toolchain hardening features. By default, all features are enabled. If a given feature does not work correctly and needs to be disabled, the corresponding environment variables mentioned below can be set to 0.

ENVIRONMENT

DEB_BUILD_HARDENING=1
Enable hardening features.
DEB_BUILD_HARDENING_DEBUG=1
Print the full resulting g++ command line to STDERR before calling g++.
DEB_BUILD_HARDENING_STACKPROTECTOR=0
Disable stack overflow protection. See README.Debian for details.
DEB_BUILD_HARDENING_RELRO=0
Disable read-only linker sections. See README.Debian for details.
DEB_BUILD_HARDENING_FORTIFY=0
Don't fortify several standard functions. See README.Debian for details.
DEB_BUILD_HARDENING_PIE=0
Don't build position independent executables. See README.Debian for details.
DEB_BUILD_HARDENING_FORMAT=0
Disable unsafe format string usage errors. See README.Debian for details.

NOTES

System-wide settings can be added to /etc/hardening-wrapper.conf, one per line.

The real g++ symlinks are renamed g++.real, and a diversion is registered with dpkg-divert(1). Thus hardened-c++'s idea of the default g++ is dictated by whatever package installed /usr/bin/g++.

SEE ALSO

hardened-ld(1) g++(1)
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