Hi, I just noticed this on Linux, after building Qt 5.12.6 with clang 5.0.2 :
``` > cat /opt/local/libexec/qt512/mkspecs/qconfig.pri QT_ARCH = x86_64 QT_BUILDABI = x86_64-little_endian-lp64 QT.global.enabled_features = shared rpath c++11 c++14 c++1z c99 c11 thread future concurrent pkg-config QT.global.disabled_features = cross_compile framework appstore-compliant debug_and_release simulator_and_device build_all force_asserts separate_debug_info static QT_CONFIG += shared rpath release c++11 c++14 c++1z concurrent dbus reduce_exports release_tools stl CONFIG += shared release QT_VERSION = 5.12.6 QT_MAJOR_VERSION = 5 QT_MINOR_VERSION = 12 QT_PATCH_VERSION = 6 QT_GCC_MAJOR_VERSION = 3 QT_GCC_MINOR_VERSION = 2 QT_GCC_PATCH_VERSION = 1 QT_CLANG_MAJOR_VERSION = 5 QT_CLANG_MINOR_VERSION = 0 QT_CLANG_PATCH_VERSION = 2 QT_EDITION = OpenSource ``` This was after I got this error from an attempt to build QtWebEngine 5.12.6 with /usr/bin/c++ which points to GCC 8: ``` Using gcc version 4.2, but at least gcc version 5 is required to build Qt WebEngine. QtWebEngine will not be built. ``` I think that what happens here is that Qt records the GCC version that is reported by clang, which has long been way too old. This kind of information shouldn't be hardcoded at the time Qt is built but determined on the fly by qmake, if not only because system compilers can be upgraded independently from the Qt installation. Not to mention Qt installs from the official installers; I see this in mine: ``` > cat /opt/Qt/5/5.12.4/gcc_64/mkspecs/qconfig.pri QT_ARCH = x86_64 QT_BUILDABI = x86_64-little_endian-lp64 QT.global.enabled_features = shared rpath c++11 c++14 c99 c11 thread future concurrent pkg-config separate_debug_info QT.global.disabled_features = cross_compile framework appstore-compliant debug_and_release simulator_and_device build_all c++1z force_asserts static QT_CONFIG += shared rpath release c++11 c++14 concurrent dbus reduce_exports reduce_relocations separate_debug_info stl CONFIG += shared release QT_VERSION = 5.12.4 QT_MAJOR_VERSION = 5 QT_MINOR_VERSION = 12 QT_PATCH_VERSION = 4 QT_GCC_MAJOR_VERSION = 5 QT_GCC_MINOR_VERSION = 3 QT_GCC_PATCH_VERSION = 1 QT_EDITION = OpenSource QT_LICHECK = QT_RELEASE_DATE = 2019-06-13 ``` which is just wrong even if there should be less unforeseen effects when building with a newer version of the same compiler (in an ideal world). R. _______________________________________________ Development mailing list [email protected] https://lists.qt-project.org/listinfo/development
