Unable to compile on windows

[aludayalu]

On make giffy

gcc main.c giffy.c -o giffy.exe
giffy.c: In function 'write_secret_message_symbols':
giffy.c:9:3: warning: implicit declaration of function 'flockfile' [-Wimplicit-function-declaration]
flockfile(giffy);
^~~~~~~~~
giffy.c:11:5: warning: implicit declaration of function 'putc_unlocked' [-Wimplicit-function-declaration]
putc_unlocked('_', giffy);
^~~~~~~~~~~~~
C:\Users\Aarav\AppData\Local\Temp\cceDbZfX.o:giffy.c:(.text+0xd): undefined reference to flockfile' C:\Users\Aarav\AppData\Local\Temp\cceDbZfX.o:giffy.c:(.text+0x29): undefined reference to putc_unlocked'
C:\Users\Aarav\AppData\Local\Temp\cceDbZfX.o:giffy.c:(.text+0x58): undefined reference to flockfile' C:\Users\Aarav\AppData\Local\Temp\cceDbZfX.o:giffy.c:(.text+0x7e): undefined reference to putc_unlocked'
collect2.exe: error: ld returned 1 exit status
make: *** [Makefile:2: giffy] Error 1