If you encounter “gccgo: error: ../x86_64-pc-linux-gnu/libgo/libgotool.a: No such file or directory”

.....
.....
/home/user1/gcc-10.4.0/host-x86_64-pc-linux-gnu/gcc/gccgo -B/home/user1/gcc-10.4.0/host-x86_64-pc-linux-gnu/gcc/ -B/usr/x86_64-pc-linux-gnu/bin/ -B/usr/x86_64-pc-linux-gnu/lib/ -isystem /usr/x86_64-pc-linux-gnu/include -isystem /usr/x86_64-pc-linux-gnu/sys-include   -g -O2 -I ../x86_64-pc-linux-gnu/libgo -static-libstdc++ -static-libgcc  -L ../x86_64-pc-linux-gnu/libgo -L ../x86_64-pc-linux-gnu/libgo/.libs -o go ../.././gotools/../libgo/go/cmd/go/alldocs.go ../.././gotools/../libgo/go/cmd/go/go11.go ../.././gotools/../libgo/go/cmd/go/main.go ../x86_64-pc-linux-gnu/libgo/libgotool.a  
gccgo: error: ../x86_64-pc-linux-gnu/libgo/libgotool.a: No such file or directory
make[2]: *** [Makefile:821: go] Error 1
make[2]: Leaving directory '/home/user1/gcc-10.4.0/host-x86_64-pc-linux-gnu/gotools'
make[1]: *** [Makefile:14649: all-gotools] Error 2
make[1]: Leaving directory '/home/user1/gcc-10.4.0'
make: *** [Makefile:997: all] Error 2

The issue can be easily resolved by not building gcc in the same directory as the source code. At GCC Home

% ./contrib/download_prerequisites
% mkdir build
% ../configure --prefix=/usr/local/gcc-10.4.0 --disable-multilib --enable-languages=all
% make -j 8
% make install