clang+libc++ is the only supported way by Google nowadays.
libstdc++ is too old and already fails to build some C++11 apps
e.g. missing std::to_string().
android-g++ mkspec still uses libstdc++ and g++.
Use -isystem to include system headers instead of QMAKE_INCDIR_POST (-I).
Task-number: QTBUG-60455
Change-Id: Iba8b04594c2e5e2832e6cf480e4e52ff31ad4106
Reviewed-by: Sérgio Martins <sergio.martins@kdab.com>
Reviewed-by: Eskil Abrahamsen Blomfeldt <eskil.abrahamsen-blomfeldt@qt.io>
For clang -Os is very similar to -O2 and doesn't really reduce size much.
-Oz is usually what you want to use with clang for code reduction.
Now clang binaries are only 9% bigger than gcc's, instead of 22%.
Change-Id: Ib0ba560be26db68aeb21c13df4b151b7fbd81431
Reviewed-by: BogDan Vatra <bogdan@kdab.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
adding shared install paths to QMAKE_{INCDIR,LIBDIR} in the spec has the
tiny side effect that they are searched _first_, which is generally a
really bad idea - they should be _last_.
for that purpose, make QMAKE_{INCDIR,LIBDIR}_POST live up to their names
(i.e., search them actually last) and migrate all affected specs to use
them.
Task-number: QTBUG-40825
Change-Id: Ie0de81c3cc49e193186d2fedd7d6c77590c8ef79
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
