https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109926
--- Comment #1 from cqwrteur <unlvsur at live dot com> ---
/home/cqwrteur/toolchains_build/gcc_build/x86_64-w64-mingw32/i586-msdosdjgpp/artifacts/hostbuild/x86_64-w64-mingw32/gcc/i586-msdosdjgpp/libstdc++-v3/include/fenv.h:36:16:
fatal error: fenv.h: No such file or directory
36 | # include_next <fenv.h>
| ^~~~~~~~
compilation terminated.
make[4]: *** [Makefile:1928: i586-msdosdjgpp/bits/stdc++.h.gch/O2g.gch] Error 1
make[4]: Leaving directory
'/home/cqwrteur/toolchains_build/gcc_build/x86_64-w64-mingw32/i586-msdosdjgpp/artifacts/hostbuild/x86_64-w64-mingw32/gcc/i586-msdosdjgpp/libstdc++-v3/include'
make[3]: *** [Makefile:576: all-recursive] Error 1
