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gcc --versionshow 11.x or 12.x)? My guess is that some step in the build is using gcc-11 (which lacks the-ftrivial-auto-var-initoption) rather than gcc-12CCenvironment variablegcc --versionisgcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0. So my default is 11. How do I change that? Is it possible to temporarily make that change only during the dmks build, in case switching from 11 to 12 has other ramifications?CC=gcc-12orCC=/usr/bin/gcc-12to the conf file. If that fails, then you could (at least temporarily) symlink/usr/bin/gcctogcc-12either via theupdate-alternativesmechanism or (as a last resort) manually.