Try to fix the build of four of my ports against Clang 16

It now defaults to ISO C++17 which does not allow `register'
storage class specifier [-Wregister].

Reported by:	pkg-fallout

audio/deadbeef/Makefile

@@ -206,11 +206,10 @@ PLIST_SUB+=		MP3="@comment "
 PLIST_SUB+=		MP3=""
 .endif
 
-.if ${OPSYS} == FreeBSD && ${OSVERSION} >= 1400091
-CPPFLAGS+=  -Dregister=
-.endif
-
 post-patch:
+	@${REINPLACE_CMD} -e 's,register ,,' \
+		${WRKSRC}/plugins/adplug/adplug/rix.cpp \
+		${WRKSRC}/plugins/adplug/libbinio/binio.cpp
 # Do not link to libsupc++ which may be PIC-unsafe (breaks 64-bit arches)
 	@${REINPLACE_CMD} -e 's, -lsupc++,,' \
 		${WRKSRC}/plugins/adplug/Makefile.in \

devel/smooth/Makefile

@@ -23,6 +23,8 @@ USE_XORG=	x11
 MAKE_ARGS=	config="systemlibcpuid systemlibwebp"
 
 post-extract:
+	@${REINPLACE_CMD} -e 's,register ,,' \
+		${WRKSRC}/classes/gui/dialogs/colordlg.cpp
 # Prevent accidental build/use of bundled libraries' code/headers
 	@${RM} -r ${WRKSRC}/libraries/fribidi ${WRKSRC}/libraries/lib* \
 		${WRKSRC}/libraries/v8 ${WRKSRC}/libraries/zlib

graphics/fotoxx/Makefile

@@ -22,7 +22,7 @@ RUN_DEPENDS=	xdg-open:devel/xdg-utils \
 USES=		desktop-file-utils gmake gnome jpeg pkgconfig
 USE_GNOME=	cairo glib20 gdkpixbuf2 gtk30
 ALL_TARGET=	fotoxx
-CXXFLAGS+=	-Wno-writable-strings
+CXXFLAGS+=	-Wno-register -Wno-writable-strings
 
 WRKSRC=		${WRKDIR}/${PORTNAME}
 

misc/swissfileknife/Makefile

@@ -26,6 +26,7 @@ post-patch:
 		|| defined(__FreeBSD__),' \
 			${WRKSRC}/sfk.cpp ${WRKSRC}/sfkext.cpp
 	@${REINPLACE_CMD} -e '/_STDINT_H/,+6d' ${WRKSRC}/sfkmatch.hpp
+	@${REINPLACE_CMD} -e 's,^ *register,   ,' ${WRKSRC}/sfkpack.cpp
 
 post-install-DOCS-on:
 	@${MKDIR} ${STAGEDIR}${DOCSDIR}