So far we did bind the definition of Q_COMPILER_VARIADIC_MACROS to C++11 (so gcc, clang will not define it in default gnu++98 standard). However, variadic macros are a feature of the gcc preprocessor since version 2.97, and are enabled in the default configurations on gcc, clang, icc. This might cause warnings and errors though if one enables additional warnings in gcc, clang (e.g. by -pedantic). Anyhow, as a precedent qglobal.h already relies on 'long long' ... The warning can be disabled by adding '-Wno-variadic-macros'. [ChangeLog][Compiler Specific Changes] Variadic macros are now enabled more liberally for gcc, clang, icc. If you have warnings (because you e.g. compile with -pedantic), disable them by -Wno-variadic-macros. Change-Id: Ie979b85809508ad70cab75e6981f20496429f463 Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>