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* Fix QtCore compilation with clangThiago Macieira2015-09-211-4/+11
| | | | | | | | | | | | | | The .altmacro is not supported with Clang's integrated assembly. The worst part is that I had this fixed, but apparently I never pushed the update to Gerrit and then we staged the old version. This commit brings back the fixes. Incidentally, it also makes things work with freebsd-clang. Change-Id: Id2a5d90d07d7ee470fcb9ad9696a9a0f9ced7ea7 Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com> Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>
* Add a qt_version_tag symbol to QtCore that uses ELF versionsThiago Macieira2015-09-131-0/+62
This symbol will exist with different ELF versions, allowing us to know which version of Qt a given library or application was linked against. When this symbol gets used, automatic packaging tools will extract the dependency. The trick here is that the application uses qt_version_tag without knowing which version is current, but the linker resolves it to the current version and records that. For example, if this were used with Qt 5.5, RPM's find-requires on an application using QtCore would print: libQt5Core.so.5()(64bit) libQt5Core.so.5(Qt_5.5)(64bit) libQt5Core.so.5(Qt_5)(64bit) Whereas find-provides on QtCore would print: libQt5Core.so.5()(64bit) libQt5Core.so.5(libQt5Core.so.5)(64bit) libQt5Core.so.5(Qt_5.0)(64bit) libQt5Core.so.5(Qt_5.1)(64bit) libQt5Core.so.5(Qt_5.2)(64bit) libQt5Core.so.5(Qt_5.3)(64bit) libQt5Core.so.5(Qt_5.4)(64bit) libQt5Core.so.5(Qt_5.5)(64bit) libQt5Core.so.5(Qt_5)(64bit) Therefore, automatic dependency resolution would have the information it needs to conclude that the application requires Qt >= 5.5. Change-Id: I049a653beeb5454c9539ffff13e3fec9aeb50197 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com> Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>