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| author | Tor Arne Vestbø <tor.arne.vestbo@qt.io> | 2019-12-08 23:47:10 +0100 |
|---|---|---|
| committer | Tor Arne Vestbø <tor.arne.vestbo@qt.io> | 2019-12-10 00:48:07 +0100 |
| commit | c3bd5ffdc8a3b459f18ba6e35fca93e29f3b0ab0 (patch) | |
| tree | 24d4c1350b6a08d35396377e83301bda3b4addb4 /src/corelib/global/qconfig-bootstrapped.h | |
| parent | 191ac31598ccc9d7c8a2c83730755714f903b7ca (diff) | |
Don't wrap feature detection macros with QT_HAS_FOO() variants
Using wrappers for these macros is problematic when for example passing the
-frewrite-includes flag to preprocess sources before shipping off to distcc
or Icecream. It will also start producing warnings when compilers implement
http://eel.is/c++draft/cpp.cond#7.sentence-2. See for example
https://reviews.llvm.org/D49091
Both https://clang.llvm.org/docs/LanguageExtensions.html and the SD-6 document at
https://isocpp.org/std/standing-documents/sd-6-sg10-feature-test-recommendations
recommend defining '__has_foo(x) 0' as a fallback for compilers without the
macros, so that's what we go for.
Change-Id: I0298cd3b4a6ff6618821e34642a5ddd6728be767
Reviewed-by: Alex Richardson <arichardson.kde@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/corelib/global/qconfig-bootstrapped.h')
| -rw-r--r-- | src/corelib/global/qconfig-bootstrapped.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/corelib/global/qconfig-bootstrapped.h b/src/corelib/global/qconfig-bootstrapped.h index e6ad80525a..c6f071bc3f 100644 --- a/src/corelib/global/qconfig-bootstrapped.h +++ b/src/corelib/global/qconfig-bootstrapped.h @@ -75,13 +75,13 @@ # define QT_FEATURE_alloca_malloc_h -1 #endif #define QT_CRYPTOGRAPHICHASH_ONLY_SHA1 -#define QT_FEATURE_cxx11_random (QT_HAS_INCLUDE(<random>) ? 1 : -1) +#define QT_FEATURE_cxx11_random (__has_include(<random>) ? 1 : -1) #define QT_NO_DATASTREAM #define QT_FEATURE_datestring 1 #define QT_FEATURE_datetimeparser -1 #define QT_FEATURE_easingcurve -1 #define QT_FEATURE_etw -1 -#define QT_FEATURE_getauxval (QT_HAS_INCLUDE(<sys/auxv.h>) ? 1 : -1) +#define QT_FEATURE_getauxval (__has_include(<sys/auxv.h>) ? 1 : -1) #define QT_FEATURE_getentropy -1 #define QT_NO_GEOM_VARIANT #define QT_FEATURE_hijricalendar -1 |