hunspell error

$ make
make  all-recursive
make[1]: Entering directory '/cygdrive/c/Users/Owner-1/Downloads/hunspell-1.6.1/hunspell-1.6.1'
Making all in intl
make[2]: Entering directory '/cygdrive/c/Users/Owner-1/Downloads/hunspell-1.6.1/hunspell-1.6.1/intl'
gcc -c -DLOCALEDIR=\"/usr/local/share/locale\" -DLOCALE_ALIAS_PATH=\"/usr/local/share/locale\" -DLIBDIR=\"/usr/local/lib\" -DBUILDING_LIBINTL -DBUILDING_DLL -DIN_LIBINTL -DENABLE_RELOCATABLE=1 -DIN_LIBRARY -DINSTALLDIR=\"/usr/local/lib\" -DNO_XMALLOC -Dset_relocation_prefix=libintl_set_relocation_prefix -Drelocate=libintl_relocate -DDEPENDS_ON_LIBICONV=1 -DHAVE_CONFIG_H -I. -I. -I..  -g -O2 -fvisibility=hidden  xsize.c
In file included from xsize.c:3:0:
xsize.h:31:3: error: #error "Please include config.h first."
  #error "Please include config.h first."
   ^~~~~
xsize.h:33:1: error: unknown type name ‘_GL_INLINE_HEADER_BEGIN’
 _GL_INLINE_HEADER_BEGIN
 ^~~~~~~~~~~~~~~~~~~~~~~
xsize.h:59:14: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘size_t’
 XSIZE_INLINE size_t
              ^~~~~~
xsize.c:2:22: error: unknown type name ‘_GL_EXTERN_INLINE’
 #define XSIZE_INLINE _GL_EXTERN_INLINE
                      ^
xsize.h:70:1: note: in expansion of macro ‘XSIZE_INLINE’
 XSIZE_INLINE size_t
 ^~~~~~~~~~~~
In file included from xsize.c:3:0:
xsize.h:74:1: warning: ‘__pure__’ attribute ignored [-Wattributes]
 xsum3 (size_t size1, size_t size2, size_t size3)
 ^~~~~
xsize.h:70:14: error: ‘size_t’ redeclared as different kind of symbol
 XSIZE_INLINE size_t
              ^~~~~~
In file included from xsize.h:22:0,
                 from xsize.c:3:
/usr/lib/gcc/x86_64-pc-cygwin/6.4.0/include/stddef.h:216:23: note: previous declaration of ‘size_t’ was here
 typedef __SIZE_TYPE__ size_t;
                       ^~~~~~
In file included from xsize.c:3:0:
xsize.h:74:1: error: expected ‘,’ or ‘;’ before ‘xsum3’
 xsum3 (size_t size1, size_t size2, size_t size3)
 ^~~~~
xsize.c:2:22: error: unknown type name ‘_GL_EXTERN_INLINE’
 #define XSIZE_INLINE _GL_EXTERN_INLINE
                      ^
xsize.h:80:1: note: in expansion of macro ‘XSIZE_INLINE’
 XSIZE_INLINE size_t
 ^~~~~~~~~~~~
In file included from xsize.c:3:0:
xsize.h:84:1: warning: ‘__pure__’ attribute ignored [-Wattributes]
 xsum4 (size_t size1, size_t size2, size_t size3, size_t size4)
 ^~~~~
xsize.h:84:1: error: expected ‘,’ or ‘;’ before ‘xsum4’
xsize.c:2:22: error: unknown type name ‘_GL_EXTERN_INLINE’
 #define XSIZE_INLINE _GL_EXTERN_INLINE
                      ^
xsize.h:90:1: note: in expansion of macro ‘XSIZE_INLINE’
 XSIZE_INLINE size_t
 ^~~~~~~~~~~~
In file included from xsize.c:3:0:
xsize.h:94:1: warning: ‘__pure__’ attribute ignored [-Wattributes]
 xmax (size_t size1, size_t size2)
 ^~~~
xsize.h:94:1: error: expected ‘,’ or ‘;’ before ‘xmax’
xsize.c:3:0: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ at end of input
 #include "xsize.h"

make[2]: *** [Makefile:249: xsize.o] Error 1
make[2]: Leaving directory '/cygdrive/c/Users/Owner-1/Downloads/hunspell-1.6.1/hunspell-1.6.1/intl'
make[1]: *** [Makefile:531: all-recursive] Error 1
make[1]: Leaving directory '/cygdrive/c/Users/Owner-1/Downloads/hunspell-1.6.1/hunspell-1.6.1'
make: *** [Makefile:438: all] Error 2