https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109926
--- Comment #4 from cqwrteur <unlvsur at live dot com> --- (In reply to Andrew Pinski from comment #2) > Where are the target header installed? The problem is that djgpp crx does not provide fenv.h libstdc++ provides a fenv.h, however, the build system cannot find it with canadian compilation.