lua-language-server @2.5.2: error: unknown type name 'ldiv_t'; did you mean 'dev_t'?

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/ports-10.13_x86_64-builder/builds/131671/steps/install-port/logs/stdio

In file included from /opt/local/include/LegacySupport/stdlib.h:34:
/opt/local/include/libcxx/v1/stdlib.h:142:34: error: unknown type name 'ldiv_t'; did you mean 'dev_t'?
inline _LIBCPP_INLINE_VISIBILITY ldiv_t div(long __x, long __y) _NOEXCEPT {
                                 ^
/usr/include/sys/_types/_dev_t.h:31:31: note: 'dev_t' declared here
typedef __darwin_dev_t        dev_t;    /* device number */ 
                              ^