Enable extra debug codepaths, like asserts and extra output. If you want to get meaningful backtraces see https://wiki.gentoo.org/wiki/Project:Quality_Assurance/Backtraces
| Package | “debug” Flag Description |
|---|---|
| app-arch/innoextract | Enable debug logging and the --debug command-line option |
| app-cdr/dvdisaster | Enable memory debugging. |
| app-editors/nano | Enable debug messages and assert warnings. Note that these will all be sent straight to stderr rather than some logging facility. |
| app-misc/rlwrap | Enable debug |
| app-portage/eix | Build with upstream's CXXFLAGS/LDFLAGS for debugging support; not recommended for normal use. |
| dev-java/jfreesvg | Enable debugging during compilation. |
| dev-lang/crystal | Build each module as a separate object file. Speeds build up. |
| dev-lang/spidermonkey | Enable assertions to allow for easier debugging of programs that link to spidermonkey -- note this will often crash software on regular end-user systems |
| dev-libs/actor-framework | Raises log-level to DEBUG, enables runtime checks and address sanitizer |
| dev-libs/boost | Build and install only the debug version of the Boost libraries. Only enable this flag if you're developing against boost. |
| dev-libs/libevent | Support runtime debug mode and malloc hooks (for programmers) |
| dev-libs/openct | Add debug output to the driver library for pcsc-lite. |
| dev-perl/perl-headers | Add source locations in generated .ph files to assist with debugging when errors occur |
| dev-tcltk/expect-lite | pull in packages needed for runtime interactive debugger |
| dev-util/google-perftools | Build a set of libraries with debug support (so-called debugalloc). These are available by default but are not needed unless you're actually developing using tcmalloc. |
| games-emulation/zsnes | Enable the builtin debugger |
| games-rpg/arx-libertatis | Enable asserts and debug logging. |
| mail-filter/dspam | Enable debugging support (don't enable this unless something needs testing!) |
| mail-filter/zdkimfilter | Log process and signal information. Also leave the child process running for gdb examination. |
| media-tv/mythtv | Instructs Qt to use the 'debug' target instead of 'release' target. If your MythTV is crashing or you need a backtrace, you need to compile it with this option otherwise the debugging data is useless. |
| net-mail/vchkuser | Enables debug messages to syslog |
| net-misc/ptpd | Enable debugging informations |
| net-misc/stargazer | Enable extra debug codepaths, like asserts and extra output. |
| net-vpn/wireguard | Enable verbose debug reporting in dmesg of various WireGuard peer and device information. |
| net-wireless/spectools | Build the raw output client for spectools. (for developers) |
| sys-apps/timer_entropyd | Enable printf debugging and logging to the syslog at DEBUG level |
| sys-auth/pam_u2f | Enable debug messages using the pam logging macros. |
| sys-auth/pambase | Enable debug information logging on syslog(3) for all the modules supporting this in the system authentication and system login stacks. |
| sys-block/parted | Enable debugging as encouraged by upstream: [The default configuration] includes --enable-debug (by default), which contains many assertions. Obviously, these "waste" space, but in the past, they have caught potentially dangerous bugs before they would have done damage, so we think it's worth it. Also, it means we get more bug reports ;) |
| sys-kernel/dracut | Module installing additional tools like strace, file editor, ssh and more |
| sys-libs/glibc | When USE=hardened, allow fortify/stack violations to dump core (SIGABRT) and not kill self (SIGKILL) |
| sys-process/fcron | Enable debug code and output. Since version 3.0.5 this will no longer force foreground execution, and fcron will be able to run as a service properly. |
| www-servers/monkeyd | Enable lots of debugging info |