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authorThiago Macieira <thiago.macieira@intel.com>2016-04-13 12:36:28 -0700
committerThiago Macieira <thiago.macieira@intel.com>2016-05-08 04:25:27 +0000
commite1d0da65261077bfd720887d6e6216497abb4c5f (patch)
treef307c4d70ee6574c762b1943922482974aa07fbd /header.LGPL-ONLY
parent1c2210b7b1ecae021d46c8e5a3cb4a53986067c4 (diff)
Fix Clang -Wexpansion-to-defined warning by deprecating QT_SUPPORTS
The C and C++ standards say it's undefined whether the preprocessor supports macros that expand to defined() will operate as an ifdef. Clang 3.9 started complaining about that fact. One solution was to change QT_SUPPORTS to check for zero or one, which means we need to change the #defines QT_NO_xxx to #define QT_NO_xxx 1. The C standard says we don't need to #define to 0, as an unknown token is interpreted as zero. However, that might produce a warning (GCC with -Wundef), so changing the macro this way is not recommended. Instead, we deprecate the macro and replace the uses with #ifdef/ndef. Change-Id: Id75834dab9ed466e94c7ffff1444874d5680b96a Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'header.LGPL-ONLY')
0 files changed, 0 insertions, 0 deletions