dateconv.cc:51:35: error: cannot convert ‘tm*’ to ‘const char*’

[oyilmaz2020]

I've been trying to install sartools on cygwin. I entered into the file and typed "make". Here is what popped up after it makes:

$ make
g++ -O3 -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -c -o dateconv.o dateconv.cc
dateconv.cc: In function ‘int main(int, char**)’:
dateconv.cc:51:35: error: cannot convert ‘tm*’ to ‘const char*’
51 | strftime(indatestring,informat,&tm_tmp);
| ^~~~~~~
| |
| tm
In file included from /usr/include/pthread.h:14,
from /usr/lib/gcc/x86_64-pc-cygwin/10/include/c++/x86_64-pc-cygwin/bits/gthr-default.h:35,
from /usr/lib/gcc/x86_64-pc-cygwin/10/include/c++/x86_64-pc-cygwin/bits/gthr.h:148,
from /usr/lib/gcc/x86_64-pc-cygwin/10/include/c++/ext/atomicity.h:35,
from /usr/lib/gcc/x86_64-pc-cygwin/10/include/c++/bits/ios_base.h:39,
from /usr/lib/gcc/x86_64-pc-cygwin/10/include/c++/ios:42,
from /usr/lib/gcc/x86_64-pc-cygwin/10/include/c++/ostream:38,
from /usr/lib/gcc/x86_64-pc-cygwin/10/include/c++/iostream:39,
from dateconv.cc:9:
/usr/include/time.h:67:49: note: initializing argument 3 of ‘size_t strftime(char*, size_t, const char*, const tm*)’
67 | size_t _maxsize, const char *__restrict _fmt,
| ~~~~~~~~~~~~~~~~~~~~~~~^~~~
make: *** [Makefile:161: dateconv.o] Error 1

Hope you can help me out.