qnx 700 compile fail

[GarfiledXu]

latest version, compiled on android arm-64 pass
complied on qnx 700 arm fail!
complie output:
inc/include/ghc/filesystem.hpp:164:22: fatal error: langinfo.h: No such file or directory
i can't find this header : laninfo.h

if i try to note this include, will ouput error info:
/ghc/filesystem.hpp:2467:43: error: '::nl_langinfo' has not been declared
_simple_insensitive(::nl_langin

[gulrak]

Sadly I have no access to any QNX system or development setup, so I'm depending on others to help. As it is (afaik) not a free system, I can't setup a VM to support it on my own. I'm willing to incorporate a PR though.