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add AFL_DEBUG to docs/env

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van Hauser
2020-02-20 12:54:24 +01:00
parent 76e0381db8
commit 04e93d9e3b
1 changed files with 5 additions and 0 deletions
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5
docs/env_variables.md
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@ -10,6 +10,11 @@
Because they can't directly accept command-line options, the compile-time Because they can't directly accept command-line options, the compile-time
tools make fairly broad use of environmental variables: tools make fairly broad use of environmental variables:
- Most afl tools do not print any ouput if stout/stderr are redirected.
If you want to have the output into a file then set the AFL_DEBUG
environment variable.
This is sadly necessary for various build processes which fail otherwise.
- Setting AFL_HARDEN automatically adds code hardening options when invoking - Setting AFL_HARDEN automatically adds code hardening options when invoking
the downstream compiler. This currently includes -D_FORTIFY_SOURCE=2 and the downstream compiler. This currently includes -D_FORTIFY_SOURCE=2 and
-fstack-protector-all. The setting is useful for catching non-crashing -fstack-protector-all. The setting is useful for catching non-crashing