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From: "unlvsur at live dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug libstdc++/100057] There are no freestanding C++
Date: Tue, 13 Apr 2021 00:29:20 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D100057

--- Comment #2 from cqwrteur <unlvsur at live dot com> ---
Then #if 0 the header.

checking for stdalign.h... no
checking for the value of EOF... configure: error: computing EOF failed
make[1]: *** [Makefile:13313: configure-target-libstdc++-v3] Error 1
make[1]: Leaving directory '/home/cqwrteur/myhome/gcc2_elf_build'
make: *** [Makefile:965: all] Error 2

It cannot find EOF.

So yes, libstdc++ requires stdio, even in a freestanding environment lol. I
love this :)=