On Tue, Jan 02, 2024 at 11:13:58AM +0100, Theo Buehler wrote:
> The following games will no longer build once robert updates libcxx and
> friends because they use std::unary_function or std::binary_function,
> which were deprecated in C++11 and removed in C++17.
> 
> An ugly workaround is to re-enable these to fix the build as in the diff
> below. Another ugly workaround is to switch to a build with C++ <= 14.
> 
> Please check if upstream has fixed this already and do either one of
> 1. update the port
> 2. backport the fix
> 3. remove the annotations in the affected functions and test
> 4. if you don't like the below, figure out a better fix.
> 
> Thanks

Here's a better diff. I may have done amnesia before I noticed that
search in tmux was broken...

Index: games/amnesia-tdd/Makefile
===================================================================
RCS file: /cvs/ports/games/amnesia-tdd/Makefile,v
diff -u -p -r1.7 Makefile
--- games/amnesia-tdd/Makefile	30 Apr 2023 19:05:02 -0000	1.7
+++ games/amnesia-tdd/Makefile	2 Jan 2024 12:44:42 -0000
@@ -39,6 +39,8 @@ LIB_DEPENDS =	audio/libogg \
 CONFIGURE_ARGS =	-DSYSTEMWIDE_RESOURCES=ON \
 			-DSYSTEMWIDE_RESOURCES_LOCATION="${PREFIX}/share/amnesia-tdd"
 
+CXXFLAGS +=	-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION
+
 WRKSRC =	${WRKDIST}/amnesia/src
 
 post-install:
Index: games/crack-attack/Makefile
===================================================================
RCS file: /cvs/ports/games/crack-attack/Makefile,v
diff -u -p -r1.30 Makefile
--- games/crack-attack/Makefile	26 Sep 2023 09:41:33 -0000	1.30
+++ games/crack-attack/Makefile	28 Dec 2023 02:03:58 -0000
@@ -30,6 +30,8 @@ CONFIGURE_STYLE=gnu
 CONFIGURE_ENV=	CPPFLAGS="-I${X11BASE}/include -I${LOCALBASE}/include" \
 		LDFLAGS="-L${LOCALBASE}/lib"
 
+CXXFLAGS +=	-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION
+
 post-install:
 	${INSTALL_DATA_DIR} ${PREFIX}/share/applications ${PREFIX}/share/pixmaps
 	cd ${WRKSRC}/data; \
Index: games/manaplus/Makefile
===================================================================
RCS file: /cvs/ports/games/manaplus/Makefile,v
diff -u -p -r1.106 Makefile
--- games/manaplus/Makefile	26 Sep 2023 09:41:38 -0000	1.106
+++ games/manaplus/Makefile	2 Jan 2024 10:03:56 -0000
@@ -41,6 +41,8 @@ CONFIGURE_ARGS =	--without-librt \
 			--with-sdl2 \
 			--without-internalsdlgfx
 
+CXXFLAGS +=	-D_LIBCPP_ENABLE_CXX17_REMOVED_UNARY_BINARY_FUNCTION
+
 FAKE_FLAGS +=	desktopdir=${PREFIX}/share/applications/
 
 AUTOCONF_VERSION =	2.69