Cannot compile using cc1.

[Tejas Joshi]

I have gcc source code, stage1-build and test directories as siblings
and I've been trying to compile test.c in test/ using:

../stage1-build/gcc/cc1 test.c

but getting error as:

In file included from test.c:1:
/usr/include/stdio.h:27:10: fatal error: bits/libc-header-start.h: No
such file or directory
27 | #include <bits/libc-header-start.h>
   |          ^~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

It does compile when stdio.h is not included using #include.
Source code configures and make runs without error.
Any solution or explanation?
Thanks.