[swift-users] SwiftPM: import ncurses -> conflicting types

[Bouke Haarsma]

Hi all,

I'm trying to build something with ncurses. There's this outdated 
tutorial: 
http://dev.iachieved.it/iachievedit/ncurses-with-swift-on-linux/. In 
order to build, a system module map was provided here: 
https://github.com/iachievedit/CNCURSES. This assumes 
`/usr/include/ncurses.h`, which is not available on MacOS 10.12. So 
I've installed ncurses through homebrew and updated the modulemap: 
https://github.com/Bouke/CNCurses. Sadly though, it doesn't work and I 
can't figure out how to get it working.

> brew install homebrew/dupes/ncurses

Module map:

> module CNCurses [system] {
>     header "/usr/local/Cellar/ncurses/6.0_2/include/ncurses.h"
>     link "ncurses"
>     export *
> }

I'm building with the following command, the flags taken from the 
package provided ncurses.pc:

> swift build \
> 	-Xcc -D_DARWIN_C_SOURCE \
> 	-Xcc -I/usr/local/Cellar/ncurses/6.0_2/include \
> 	-Xcc -I/usr/local/Cellar/ncurses/6.0_2/include/ncursesw \
> 	-Xlinker -L/usr/local/Cellar/ncurses/6.0_2/lib

This produces the following error message (shortened):

> Compile Swift Module 'TermDraw' (1 sources)
> <module-includes>:1:9: note: in file included from <module-includes>:1:
> #import "/usr/local/Cellar/ncurses/6.0_2/include/ncurses.h"
>         ^
> /usr/local/Cellar/ncurses/6.0_2/include/ncurses.h:60:10: error: 
> 'ncursesw/ncurses_dll.h' file not found with <angled> include; use 
> "quotes" instead
> #include <ncursesw/ncurses_dll.h>
>          ^
> <module-includes>:1:9: note: in file included from <module-includes>:1:
> #import "/usr/local/Cellar/ncurses/6.0_2/include/ncurses.h"
>         ^
> /usr/local/Cellar/ncurses/6.0_2/include/ncurses.h:653:45: error: 
> conflicting types for 'keyname'
> extern NCURSES_EXPORT(NCURSES_CONST char *) keyname (int);              
> /* implemented */
>                                             ^
> /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.12.sdk/usr/include/curses.h:598:45: 
> note: previous declaration is here
> extern NCURSES_EXPORT(NCURSES_CONST char *) keyname (int);              
> /* implemented */
>                                             ^
> <module-includes>:1:9: note: in file included from <module-includes>:1:
> #import "/usr/local/Cellar/ncurses/6.0_2/include/ncurses.h"
>         ^

(and goes on for quite a few other conflicting types)

Any help on getting this to build is greatly appreciated. Example code 
can be found here: https://github.com/Bouke/TermDraw

---
Thanks,
Bouke