[Bug 53909] New: opengl32.dll can't be loaded if win32u.so is not initialized first

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=53909

Bug ID: 53909
           Summary: opengl32.dll can't be loaded if win32u.so is not
                    initialized first
           Product: Wine
           Version: unspecified
          Hardware: x86-64
                OS: Linux
            Status: NEW
          Keywords: regression
          Severity: normal
          Priority: P2
         Component: opengl
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail]
   Regression SHA1: 60eeb92ae0342a13e6e407a44d116b657b7e9ee5
      Distribution: ---

Created attachment 73457
  --> https://bugs.winehq.org/attachment.cgi?id=73457
test

We load unixlibs when corresponding PE file is mapped (and before its imports
are mapped). For unixlibs that link to win32u.so, we need win32u.so to be
loaded first, because system loader doesn't know where to find it. It's usually
good enough, we needed some workarounds for Vulkan [1], but it doesn't work for
opengl32.so. We may need to change ntdll's unixlib loading strategy or find a
workaround for opengl32. I attached a simple test.

[1] https://gitlab.winehq.org/wine/wine/-/merge_requests/547