boost_system only contains a dummy_exported_function for backward
compatibility. This library stub was removed in Boost 1.89, so do
not forcibly link against it.
Upstream fixed this in a slightly larger commit that also removed
use of some deprecated Qt classes, so the better fix would be to
update to 2025_10_23, which I leave to the maintainer to handle.
Index: Makefile
===================================================================
RCS file: /cvs/ports/x11/twmn/Makefile,v
diff -u -p -r1.2 Makefile
--- Makefile 18 Nov 2024 14:47:41 -0000 1.2
+++ Makefile 20 Jan 2026 06:16:42 -0000
@@ -4,7 +4,7 @@ V = 1.2pl20220125
GH_ACCOUNT = sboli
GH_PROJECT = twmn
GH_COMMIT = 58ca77dde5a007ef0edb7c6e2312310adaf68c7d
-REVISION = 0
+REVISION = 1
DISTNAME = ${GH_PROJECT}-${V}
@@ -18,7 +18,7 @@ PERMIT_PACKAGE = Yes
MODULES = devel/qmake x11/qt5
WANTLIB += ${COMPILER_LIBCXX} GL c m GL Qt5DBus Qt5Core Qt5Gui
-WANTLIB += Qt5Network Qt5Widgets boost_program_options boost_system
+WANTLIB += Qt5Network Qt5Widgets boost_program_options
LIB_DEPENDS = devel/boost
Index: patches/patch-twmnc_twmnc_pro
===================================================================
RCS file: patches/patch-twmnc_twmnc_pro
diff -N patches/patch-twmnc_twmnc_pro
--- /dev/null 1 Jan 1970 00:00:00 -0000
+++ patches/patch-twmnc_twmnc_pro 20 Jan 2026 06:22:48 -0000
@@ -0,0 +1,14 @@
+Fix build with Boost 1.89
+
+Index: twmnc/twmnc.pro
+--- twmnc/twmnc.pro.orig
++++ twmnc/twmnc.pro
+@@ -8,7 +8,7 @@ TARGET = twmnc
+ DEPENDPATH += .
+ INCLUDEPATH += .
+ DESTDIR = ../bin/
+-LIBS += -lboost_program_options -lboost_system -lpthread
++LIBS += -lboost_program_options -lpthread
+ target.path += /usr/local/bin
+ INSTALLS += target
+ # Input
