windows: bump minimum to Vista (from XP)

After this patch curl requires targeting Vista or newer, and a toolchain
with Vista support.

Supported MSVC compilers (VS2010+) all support Vista:
- VS2012+ target Win8 (or later) by default.
- VS2010 targets Win7 by default.

Supported mingw-w64 versions (v3+) all support Vista:
- mingw-w64 v9+ target Win10 by default.
- mingw-w64 v8 and older target Server 2003 (~XP) by default.
  After this patch it may be necessary to override the default Windows
  target version to Vista (or newer) via:
  autotools: `CPPFLAGS=-D_WIN32_WINNT=0x0600`
  cmake: `-DCURL_TARGET_WINDOWS_VERSION=0x0600`
- mingw-w64 v6+ allow changing the default at toolchain build-time.

Notes:
- For non-MSVC, non-mingw-w64 toolchains, `if_nametoindex` needs to be
  allowlisted in `curl_setup.h`, if they do support it.

Fixes #17985 (discussion)
Closes #18009
This commit is contained in:
Viktor Szakats 2025-07-24 03:06:39 +02:00
parent 6c8956c1cb
commit b17ef873ae
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27 changed files with 136 additions and 611 deletions

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@ -36,7 +36,7 @@ We aim to support these or later versions.
- nghttp2 1.15.0 (2016-09-25)
- OpenLDAP 2.0 (2000-08-01)
- OpenSSL 3.0.0 (2021-09-07)
- Windows XP 5.1 (2001-08-24 - 2009-04-14)
- Windows Vista 6.0 (2006-11-08 - 2012-04-10)
- wolfSSL 3.4.6 (2017-09-22)
- zlib 1.2.5.2 (2011-12-11)
- zstd 1.0 (2016-08-31)