On Wed, Sep 7, 2022 at 9:02 PM Grigory Kirillov <t...@bk.ru> wrote: > > Recently one OpenBSD user of little project of mine got caught up in > a problem - they couldn't compile it from source because wide character > functions of the ncurses library weren't declared. After a long > investigation I finally found out that these functions require > _XOPEN_SOURCE_EXTENDED macro being defined. On my machine that wasn't > a problem because on my Linux system ncurses header also checks for > _XOPEN_SOURCE macro which value has to be greater than or equal to 500 > and I was already compiling it with this macro with a value of 700. > > My request here is to put up a `#define _XOPEN_SOURCE_EXTENDED` line to > the OpenBSD man page for curs_addwstr.3 I think this will make it > easier for other people to compile ncurses with wide character functions > especially for someone who's trying to resolve issues for someone else > while being on a different system... > > Also it would be cool if ncurses header provided in OpenBSD were > checking value of the _XOPEN_SOURCE macro (because > _XOPEN_SOURCE_EXTENDED is equal to _XOPEN_SOURCE with the value of 500 > or greater (according to my feature_test_macros(7) man page) and I also > hope that this is a standard behavior).
>From what I can see, this macro is obsolete, so it should probably not be recommended in the man page: "Use of _XOPEN_SOURCE_EXTENDED in new source code should be avoided. Since defining _XOPEN_SOURCE with a value of 500 or more has the same effect as defining _XOPEN_SOURCE_EXTENDED, the latter (obsolete) feature test macro is generally not described in the SYNOPSIS in man pages."
