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build: Opt out from using mingw-w64's replacement printf(), etc.

Simon McVittie requested to merge smcv/dbus:mingw-w64-printf into master

  • build: Opt out from using mingw-w64's replacement printf(), etc.

    The Windows code in dbus is careful to use Windows-specific equivalents of the Standard C features that are not implemented by msvcrt.dll, so we don't need to substitute a Standard C printf implementation.

    This avoids compiler warnings/errors when gcc expects us to be using Microsoft printf syntax (ms_printf attribute), but newer versions of mingw-w64 expect us to be using GNU or Standard C printf syntax (gnu_printf attribute) as a result of __USE_MINGW_ANSI_STDIO being enabled by default if not otherwise specified.

    Resolves: #380 (closed)

  • CI: Use current Debian stable release for mingw-w64 builds

    Now that we have resolved the failure to build with newer mingw-w64, we don't need to hold these back to Debian 10 'buster' and can upgrade to the current stable release, Debian 11 'bullseye'.

  • CI: Make most gcc warnings fatal for CMake builds

    This makes sure we notice problems early.

Edited by Simon McVittie

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