Here is a summary of the commands to show the warnings:
apt-get install -y -q gcc-mingw-w64-x86-64
update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix
The first install command shows these message excerpts:
# apt-get install -y -q gcc-mingw-w64-x86-64
...
Setting up gcc-mingw-w64-x86-64-posix-runtime (10.3.0-14ubuntu1+24.3) ...
Setting up gcc-mingw-w64-x86-64-posix (10.3.0-14ubuntu1+24.3) ...
update-alternatives: using /usr/bin/x86_64-w64-mingw32-gcc-posix to provide /usr/bin/x86_64-w64-mingw32-gcc (x86_64-w64-mingw32-gcc) in auto mode
Setting up gcc-mingw-w64-x86-64-win32 (10.3.0-14ubuntu1+24.3) ...
update-alternatives: using /usr/bin/x86_64-w64-mingw32-gcc-win32 to provide /usr/bin/x86_64-w64-mingw32-gcc (x86_64-w64-mingw32-gcc) in auto mode
Setting up gcc-mingw-w64-x86-64 (10.3.0-14ubuntu1+24.3) ...
update-alternatives: warning: forcing reinstallation of alternative /usr/bin/x86_64-w64-mingw32-gcc-win32 because link group x86_64-w64-mingw32-gcc is broken
update-alternatives: warning: skip creation of /usr/bin/x86_64-w64-mingw32-gcc-8 because associated file /usr/bin/x86_64-w64-mingw32-gcc-8.3-win32 (of link group x86_64-w64-mingw32-gcc) doesn't exist
Processing triggers for libc-bin (2.35-0ubuntu3.1) ...
The second manual update-alternatives command shows these messages:
# update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix
update-alternatives: using /usr/bin/x86_64-w64-mingw32-gcc-posix to provide /usr/bin/x86_64-w64-mingw32-gcc (x86_64-w64-mingw32-gcc) in manual mode
update-alternatives: warning: skip creation of /usr/bin/x86_64-w64-mingw32-gcc-8 because associated file /usr/bin/x86_64-w64-mingw32-gcc-8.3-posix (of link group x86_64-w64-mingw32-gcc) doesn't exist
Note that this release uses GCC 10, not 8.3, so it should be seeking the associated file:
/usr/bin/x86_64-w64-mingw32-gcc-10-posix
Other info:
# lsb_release -rd
Description: Ubuntu 22.04.2 LTS
Release: 22.04
