Fork#39766: Support gratuitous GCC dependencies
Open Date: 2019-11-15 19:44
Last Update: 2020-04-27 11:23
URL for this Ticket:
https://osdn.net//projects/mingw/ticket/39766
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Last Changes/Comment on this Ticket:
2020-04-27 11:23 Updated by: keith
* Status Update from Open to Closed
* Resolution Update from Accepted to Fixed
Comment:
As of the release of wsl-5.3, all gratuitously assumed features needed to
support building of GCC-9.2.0 have been incorporated, for mingw32.
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Ticket Status:
Reporter: keith
Owner: keith
Type: Feature Request
Status: Closed
Priority: 5 - Medium
MileStone: WSL-5.3 (closed)
Component: WSL
Severity: 5 - Medium
Resolution: Fixed
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Ticket details:
MS-Windows builds of GCC-9.x gratuitously require Microsoft's non-standard
_get_errno() and _set_errno() functions, which are not supported by MSVCRT.DLL
prior to Windows-Vista. Additionally, this same GCC version introduces a
dependency on a ftruncate64() function, which, as ftruncate() is mapped to
Microsoft's _chsize(), could be mapped to Microsoft's _chsize_s(); however,
like the two non-standard errno accessors, _chsize_s() is unsupported, without
introducing dependencies on non-free Microsoft DLLs, prior to Windows-Vista.
Such gratuitous GCC dependencies are incompatible with MinGW.org's policy of
continuing legacy support for pre-Vista Windows versions.
The attached patch offers work-arounds for each of these gratuitous GCC
dependencies, extending support to pre-Vista Windows, while still linking with
MSVCRT.DLL.
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