configure: WARNING: nl_types.h: present but cannot be compiled

[DeathRow]

$ autoconf --version
autoconf (GNU Autoconf) 2.59

Used In i686-pc-Cygwin Environment.

$ configure --enable-shared=yes --enable-static=yes
--enable-fast-install=yes --disable-nls --enable-http
--enable-xml-messages

checking whether the inttypes.h PRIxNN macros are broken... no
checking for ld used by GCC... /usr/i686-pc-cygwin/bin/ld.exe
checking if the linker (/usr/i686-pc-cygwin/bin/ld.exe) is GNU ld... yes
checking for shared library run path origin... done
checking argz.h usability... yes
checking argz.h presence... yes
checking for argz.h... yes
checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking locale.h usability... yes
checking locale.h presence... yes
checking for locale.h... yes
checking nl_types.h usability... no
checking nl_types.h presence... yes
configure: WARNING: nl_types.h: present but cannot be compiled
configure: WARNING: nl_types.h: check for missing prerequisite headers?
configure: WARNING: nl_types.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to address@hidden ##
configure: WARNING:     ## ------------------------------------ ##
checking for nl_types.h... yes
checking malloc.h usability... yes
checking malloc.h presence... yes
checking for malloc.h... yes
checking stddef.h usability... yes
checking stddef.h presence... yes


-- 
Thanks, DeathRow...