QNX 6.5.0(SP1)和6.6.0(向后兼容)之间有什么区别? [英] What's the difference between QNX 6.5.0(SP1) and 6.6.0 (backwards compatibility)?

问题描述

找不到实际的发行说明，该发行说明指出了QNX 6.5.1和6.6.0之间的确切差异.我知道Photon不再受支持.

Couldn't find actual release notes that point out the exact difference between QNX 6.5.1 and 6.6.0. I know that Photon's not supported anymore.

到目前为止，我已经拥有SDP 6.6.0，但是可能我还需要我的软件才能在6.5.0上运行.那么，到6.5.0的实际向后兼容级别是多少?有人指出"6.6与6.5二进制兼容" [ 1 ]-有人可以用官方文件支持吗?

So far, I've got SDP 6.6.0 but it might be that I need my software also to run on 6.5.0. So what is the actual backward compatibility level to 6.5.0? Some state that "6.6 is binary compatible with 6.5" [1] - can anyone support this with official documents?

由于QNX遵循POSIX标准，因此我认为这些API是相同的，并且确实应该提供向后兼容性.因此，为6.6.0创建的程序基本上也应该在6.5.0上运行，对吧?

Since QNX follows the POSIX standard, I suppose that the APIs are the same and should be indeed provide backwards compatibility. So the programs created for 6.6.0 should basically also run on 6.5.0, right?

推荐答案

到目前为止发现的差异.

Differences I discovered so far.

• 使用SDP 6.6.0(i486-pc-nto-qnx6.6.0-g ++)并在QNX 6.5.0上运行软件:
  • 必须禁用gcc堆栈保护器:qcc .. -fno-stack-protector(另请参见 1 ]链接共享库SDP 6.6.0将使用libcpp.so.5，而QNX 6.5.0仅提供libcpp.so.4.
  • using SDP 6.6.0 (i486-pc-nto-qnx6.6.0-g++) and running software on QNX 6.5.0:
    • gcc stack protector has to be disabled: qcc .. -fno-stack-protector (see also here)
    • when using dlopen() [1] to link against shared libraries SDP 6.6.0 will use libcpp.so.5 while QNX 6.5.0 only provides libcpp.so.4.

    另外:我发现了一个论坛线程 Ryan Mansfield(我认为QNX编译器的主要维护者)说:

    Additionally: I found a forum thread where Ryan Mansfield (QNX compiler lead maintainer, I think) says:

    一个问题[一个]可能会试图使6.6.0二进制文件在6.5.0上运行， 是所有内容都是使用-fstack-protector构建的，它依赖于 libc 中的支持.该版本不在6.5.0 libc 中，但添加了IIRC 6.5.0SP1.

    One problem [one] might hit trying to get 6.6.0 binaries to run on 6.5.0, is that everything is built is with -fstack-protector, which relies on support in libc. This wasn't in the 6.5.0 libc but IIRC, 6.5.0SP1 added.

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