./configure is wrong? in mingW64

[DSDR999]

when i run the ./congfigure , it is shown
configure: loading site script /etc/config.site
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.exe
checking for suffix of executables... .exe
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C11 features... none needed
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for a BSD-compatible install... /usr/bin/install -c
checking for ranlib... ranlib
checking for error_at_line... no
checking build system type... x86_64-w64-mingw32
checking host system type... x86_64-w64-mingw32
checking for GNU libc compatible malloc... yes
checking for GNU libc compatible realloc... yes
checking for main in -lc... no
configure: error: Could not use standard C library
i have upload the config.log

But i have successfully generated fftw3 in the same setting.
config.log