On 2026/03/12 14:55, Martin Ziemer wrote:
> Found by pure coincidence, that gnuchessx builds the book even with
> input from /dev/null. (This broke the port in dpb)
> 
> Tested on amd64 by building with make < /dev/null and with dpb
> games/gnuchess.
> 
> Index: Makefile
> ===================================================================
> RCS file: /cvs/ports/games/gnuchess/Makefile,v
> diff -u -p -r1.56 Makefile
> --- Makefile	8 Sep 2025 10:35:20 -0000	1.56
> +++ Makefile	12 Mar 2026 13:40:15 -0000
> @@ -1,9 +1,7 @@
> -BROKEN=		post-build fails in dpb (or if stdin is redirected from /dev/null)
> -
>  COMMENT=	chess program
>  
>  DISTNAME=	gnuchess-6.3.0
> -REVISION=	0
> +REVISION=	1
>  DISTFILES=	${DISTNAME}.tar.gz book_1.02.pgn.gz
>  
>  CATEGORIES=	games
> @@ -27,7 +25,7 @@ CONFIGURE_STYLE= gnu
>  
>  post-build:
>  	cd ${WRKSRC}/src && ln -sf ../../book_1.02.pgn
> -	cd ${WRKSRC}/src && ./gnuchess --addbook book_1.02.pgn
> +	cd ${WRKSRC}/src && ./gnuchessx --addbook book_1.02.pgn
>  
>  post-install:
>  	${INSTALL_DATA_DIR} \
> 

gnuchessx fails to run unless gnuchess is available on the path.
It does run if you set PATH=./ (or just run ./gnuchess --xboard, like
gnuchessx does anyway), however if I do this with input redirecting
from /dev/null (either "make < /dev/null" or "./gnuchessx ... <
/dev/null" etc) it still fails in the same old way: prints "Chess"
then exits immediately, no output is generated.