[Bug libstdc++/113398] no longer usable with -ffreestanding
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113398 Hans-Peter Nilsson changed: What|Removed |Added CC||hp at gcc dot gnu.org --- Comment #3 from Hans-Peter Nilsson --- Huh! I found this out the hard way, and thought it was just another clang++/gcc incompatibility; I had no idea it was this "recent". Cf. https://github.com/ARM-software/ethos-n-driver-stack (at the moment compiling only with ARMs clang-derivate). The code under firmware/control_unit there (targetting a cortex-m7) uses -ffreestanding (the clang option) but makes use of enough to "break" it. FWIW, hacking off the --freestanding for gcc works as long as you also set up enough of a "hosted" environment. (There's also firmware/ple for a cortex-m33, but that code is truly freestanding AFAIU - except for using main.) Interesting that it "worked" with gcc-12. I cooked up something with a recent gcc+binutils+newlib though. Just an example of live freestanding code out there, using , right or wrong.
[Bug libstdc++/113398] no longer usable with -ffreestanding
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113398 Jonathan Wakely changed: What|Removed |Added CC||arsen at gcc dot gnu.org --- Comment #2 from Jonathan Wakely --- We could consider a macro that disables the error, which would mean "give me the full library even if it might not work, give it to me straight, like a pear cider that's made from 100% pears". For std::string we're still missing std::allocator (in gcc-13 but not trunk), several of the __throw_xxx functions, and the strtol, strtof etc. functions used for std::stoi, std::stof etc.
[Bug libstdc++/113398] no longer usable with -ffreestanding
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113398 --- Comment #1 from Jonathan Wakely --- In file included from /home/jwakely/gcc/13/include/c++/13.2.1/string:38, from free.cc:1: /home/jwakely/gcc/13/include/c++/13.2.1/bits/requires_hosted.h:34:4: error: #error "This header is not available in freestanding mode." 34 | # error "This header is not available in freestanding mode." |^
