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Undefine _FORTIFY_SOURCE before defining it.

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This makes our compilation options checks in autoconf work better on
systems that already define _FORTIFY_SOURCE.

Fixes at least one case of bug 18841; bugfix on 0.2.3.17-beta. Patch
from "trudokal".
This commit is contained in:
Nick Mathewson
2016-05-11 12:15:37 -04:00
parent 368146370b
commit c662bef455
2 changed files with 8 additions and 1 deletions
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changes/bug18841.1
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o Major bugfixes (compilation):
- Correctly detect compiler flags on systems where _FORTIFY_SOURCE
is predefined. Previously, our use of -D_FORTIFY_SOURCE would
cause a compiler warning, thereby making other checks fail.
Fixes one case of bug 18841; bugfix on 0.2.3.17-beta. Patch from
"trudokal".