From c3bd5ffdc8a3b459f18ba6e35fca93e29f3b0ab0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= Date: Sun, 8 Dec 2019 23:47:10 +0100 Subject: 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 Reviewed-by: Thiago Macieira --- src/corelib/global/qglobal.cpp | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'src/corelib/global/qglobal.cpp') diff --git a/src/corelib/global/qglobal.cpp b/src/corelib/global/qglobal.cpp index 4ab5bd2edb..b662233d4e 100644 --- a/src/corelib/global/qglobal.cpp +++ b/src/corelib/global/qglobal.cpp @@ -92,7 +92,7 @@ # include #endif -#if defined(Q_OS_DARWIN) && QT_HAS_INCLUDE() +#if defined(Q_OS_DARWIN) && __has_include() # include # include #endif @@ -3041,7 +3041,7 @@ enum { */ QByteArray QSysInfo::machineUniqueId() { -#if defined(Q_OS_DARWIN) && QT_HAS_INCLUDE() +#if defined(Q_OS_DARWIN) && __has_include() char uuid[UuidStringLen + 1]; io_service_t service = IOServiceGetMatchingService(kIOMasterPortDefault, IOServiceMatching("IOPlatformExpertDevice")); QCFString stringRef = (CFStringRef)IORegistryEntryCreateCFProperty(service, CFSTR(kIOPlatformUUIDKey), kCFAllocatorDefault, 0); -- cgit v1.2.3