Review Request 121761: Fix build on FreeBSD

[Alex Richardson]

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https://git.reviewboard.kde.org/r/121761/
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Review request for Plasma and Raphael Kubo da Costa.


Repository: plasma-workspace


Description
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Add missing errno.h include

Wrap Linux-only signals in #ifdef Q_OS_LINUX

Fix build with X11 not installed to /usr


Diffs
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  drkonqi/detachedprocessmonitor.cpp 85a87874c6e9ce47856a01195b42aef9f3a4991a 
  drkonqi/systeminformation.cpp 8f5fc7fe789a4bbe23f178e7e940ba1d1a1b59db 
  ksmserver/CMakeLists.txt 84a8aa393dfb6ed4671094d1fccbb3c79c53f9af 
  ksmserver/screenlocker/greeter/authenticator.cpp ad60f0bd0076cd9c8c3875f13dc92b5da253bb1a 
  ksmserver/screenlocker/greeter/autotests/killtest.cpp 6f2ef114459b5d641e357f3a817b82e7af2e72a3 
  libkworkspace/CMakeLists.txt 53ce6108bd91f87108206fca02ac303dadf069e1 

Diff: https://git.reviewboard.kde.org/r/121761/diff/


Testing
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compiles, still compiles on linux


Thanks,

Alex Richardson

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