D16894: [ECM] use a macro to add compiler flags conditionally

[René J.V. Bertin]

rjvbb updated this revision to Diff 50451.
rjvbb added a comment.


  This follows David's suggestion, but using `QUERY_IF` instead of the suggested `TRY_IF` to make it clear that this parameter controls the querying of the compiler.
  I haven't yet tested the new logic exhaustively but the as far as I can tell the macro behaves as intended as used in the two compiler settings modules.
  
  I've simplified the `QUERY_IF` conditions in those modules to just "if APPLE". Querying systematically on APPLE seems reasonable because the likelihood that a non-clang compiler is used for building is very small and when  it happens we'd probably be dealing with a non-GNU compiler.

CHANGES SINCE LAST UPDATE
  https://phabricator.kde.org/D16894?vs=50399&id=50451

REVISION DETAIL
  https://phabricator.kde.org/D16894

AFFECTED FILES
  kde-modules/KDECompilerSettings.cmake
  kde-modules/KDEFrameworkCompilerSettings.cmake
  modules/ECMAddCompilerFlag.cmake

To: rjvbb, #build_system, kfunk
Cc: dfaure, kfunk, apol, kde-frameworks-devel, kde-buildsystem, #build_system, michaelh, ngraham, bruns
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