Hello, Jan-Benedict, On Jun 27, 2022, Jan-Benedict Glaw <jbg...@lug-owl.de> wrote:
> For me, this patch broke building a basic cross compiler using Debian > sid's "gcc-snapshot" package as the build/host compiler Thanks for reporting the problem you've encountered, and for your interest. AFAIK the general recommendation for building GCC is to either bootstrap it, using a native compiler that meets the build documented requirements, or use the same precompiled version of the compiler that you wish to cross-build. IIRC, this latter requirement is particularly important for canadian crosses, but it applies as a general recommendation, and GNAT often takes advantage of that to use features that will be disregarded by stage1 (no optimization, no fatal warnings, limited runtime, etc), but that must be available in later stages and in cross builds, which is easy to satisfy by using the same compiler version, and which is a given when bootstrapping. Of course it isn't always the case that you will run into problems when deviating from these recommendations, so it's perfectly possible that you get lucky building it all using compilers that don't meet the recommendations to get started, but that's counting on luck, not on a reliable procedure. See note Prerequisites in the GCC Installation manual for more details. I hope this helps, -- Alexandre Oliva, happy hacker https://FSFLA.org/blogs/lxo/ Free Software Activist GNU Toolchain Engineer Disinformation flourishes because many people care deeply about injustice but very few check the facts. Ask me about <https://stallmansupport.org>
