[Bug other/109522] New: Spurious "cc1: error: no include path in which to search for stdc-predef.h" building a cross compiler

["xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109522

            Bug ID: 109522
           Summary: Spurious "cc1: error: no include path in which to
                    search for stdc-predef.h" building a cross compiler
           Product: gcc
           Version: 13.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: other
          Assignee: unassigned at gcc dot gnu.org
          Reporter: xry111 at gcc dot gnu.org
  Target Milestone: ---

Build a cross compiler (with target libc not installed yet):

../gcc/configure --target=loongarch64-linux-gnu --disable-multilib
--with-system-zlib && make gcc

Then a spurious message is outputted for macro_list:

echo | /home/xry111/git-repos/gcc-la/./gcc/xgcc
-B/home/xry111/git-repos/gcc-la/./gcc/  -E -dM - | \
  sed -n -e 's/^#define \([^_][a-zA-Z0-9_]*\).*/\1/p' \
         -e 's/^#define \(_[^_A-Z][a-zA-Z0-9_]*\).*/\1/p' | \
  sort -u > tmp-macro_list
cc1: error: no include path in which to search for stdc-predef.h
/bin/sh ../../gcc/gcc/../move-if-change tmp-macro_list macro_list

Though the macro_list file is created successfully, the message can lead people
to think something is wrong.