Windows.h和clang（LLVM）

Question

我正在尝试使用clang编译一个包含windows.h的小项目，但是遇到了一些无法解决的错误。这些错误是什么原因引起的？是因为clang不支持所有必需的功能，还是我漏掉了什么呢？

In file included from C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/wind
ows.h:155:
In file included from C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/wind
ef.h:177:
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winnt.h(12857) :  warning:

  expression result unused [-Wunused-value]
UNREFERENCED_PARAMETER(CallbackEnviron);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winnt.h:12857:28: note: in
stantiated from:
UNREFERENCED_PARAMETER(CallbackEnviron);
                       ^~~~~~~~~~~~~~~

In file included from C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/wind
ows.h:156:
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2326) :  error:

  invalid operands to binary expression ('LONGLONG' (aka 'double') and
  'LONGLONG')
                                      Old & Value,
                                      ~~~ ^ ~~~~~
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2327) :  error:

  expected ')'
                                      Old) != Old);
                                           ^
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2325) :  note:
  to match this '('
} while (InterlockedCompareExchange64(Destination,
        ^
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2344) :  error:

  invalid operands to binary expression ('LONGLONG' (aka 'double') and
  'LONGLONG')
                                      Old | Value,
                                      ~~~ ^ ~~~~~
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2345) :  error:

  expected ')'
                                      Old) != Old);
                                           ^
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2343) :  note:
  to match this '('
} while (InterlockedCompareExchange64(Destination,
        ^
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2362) :  error:

  invalid operands to binary expression ('LONGLONG' (aka 'double') and
  'LONGLONG')
                                      Old ^ Value,
                                      ~~~ ^ ~~~~~
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2363) :  error:

  expected ')'
                                      Old) != Old);
                                           ^
C:\Program Files\Microsoft SDKs\Windows\v6.0A\Include/winbase.h(2361) :  note:
  to match this '('
} while (InterlockedCompareExchange64(Destination,
        ^

...and a lot more...

- mort

Answer 1

您可能需要定义一个与clang兼容的UNREFERENCED_PARAMETER宏版本。像这样的东西应该可以帮助您：https://web.archive.org/web/20130425151054/http://sourcefrog.net/weblog/software/languages/C/unused.html 此外，似乎对于clang，类型LONGLONG被定义为double，并且您无法在浮点数上执行二进制算术运算（and、or、not等）。您需要确保将其typedef为适当的整数类型。

根据windows.h、winbase.h和winnt.h的结构有些不同，您可以自己创建包装器，以使其通过。否则，请尝试找到与gcc兼容的windows.h版本，并使用它。Clang应该与之兼容。

祝您好运！

- harald

---

这对于我的小项目来说太繁琐了。但还是谢谢你的帮助！ - mort

@EyadMohammedOsama，谢谢，已更新链接至存档版本。 - harald