Statically link libwinpthread-1.dll in gdbserver

Hi,

I am trying to produce a statically linked gdbserver (except the distribution DLL from Windows). I have everything in except for libwinpthread-1.dll. I
guess gdbserver should be linked with libwinpthread.a but how to tell the build system to do so?

I am using this command line to configure:
../binutils-gdb/configure --enable-static --with-static-standard-libraries --disable-gdb --host=x86_64-w64-mingw32

and then followed by
make

Using objdump, I see that the following DLL are needed by the binary
KERNEL32.dll
msvcrt.dll
libwinpthread-1.dll
USER32.dll
WS2_32.dll

As you can see from the command line, I am using mingw-w64. I am using the stock Ubuntu 20.04 package for it, which includes the following library files for pthread
-rw-r--r-- 1 root root 388692 Nov 15  2019 libpthread.a
-rw-r--r-- 1 root root  88994 Nov 15  2019 libpthread.dll.a
-rwxr-xr-x 1 root root 621013 Nov 15  2019 libwinpthread-1.dll
-rw-r--r-- 1 root root 388692 Nov 15  2019 libwinpthread.a
-rw-r--r-- 1 root root  88994 Nov 15  2019 libwinpthread.dll.a