Christian Ehrlicher said: >> and while this works on Win32, it breaks on linux because Q_DECL_EXPORT >> doesn't evaluate to default-visibility (don't know the gcc command for >> that) but to nothing. At least on a "default-built" qt-copy. >> > It's not the fault of Q_DECL_EXPORT but Q_DECL_IMPORT which is defined to > nothing on linux.
That's not a problem on ELF/x86, but I do wonder how it compiles at all under 64-bit. Symbols marked "hidden" tell the compiler it can generate shorter calls, instead of emitting a relocation to a full 64-bit jump. On x86-64, that would be a 32-bit RIP-relative call; on Itanium, it would probably be a one of the weird lengths, like 21- or 25-bit jump. (Itanium can encode short immediates in a single 41-bit instruction, but a full 64-bit displacement requires three instructions, 128 bits) -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 _______________________________________________ Kde-buildsystem mailing list Kde-buildsystem@kde.org https://mail.kde.org/mailman/listinfo/kde-buildsystem