Review Request: Fix underlinking in KDM

[Michael Palimaka]

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http://git.reviewboard.kde.org/r/104492/
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Review request for Build System.


Description
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When using the gold linker, building KDM with kerberos support fails due to underlinking: kdm/backend/krb5auth.c requires error_message() from libcom_err.

This patch adds a check for the library and passes it for linking when necessary.


Diffs
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  kdm/ConfigureChecks.cmake 0f969f73780e0b45edcb894084e0a3aaa8f72d69 
  kdm/backend/CMakeLists.txt e94a3b9c68b0da0b5f2ef794e2e67cc7f4c3db5f 

Diff: http://git.reviewboard.kde.org/r/104492/diff/


Testing
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Local compilation without issues, both with and without kerberos support enabled.


Thanks,

Michael Palimaka

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