[Bug libstdc++/80196] fenv_t not declared

[roman.morokutti at googlemail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80196

--- Comment #1 from Roman <roman.morokutti at googlemail dot com> ---
I configured the build as follows:

/home/roman/gcc-source/configure

Best regards,
Roman