--- src/VBox/Runtime/Makefile.kmk.orig	2026-10-19 18:50:52 UTC
+++ src/VBox/Runtime/Makefile.kmk
@@ -233,6 +233,9 @@ $(IPRT_OUT_DIR)/oiddb.h.ts +| $(IPRT_OUT_DIR)/oiddb.h:
 	$(QUIET)$(oiddb2c_1_TARGET) "$@" $(filter %.cfg,$^)
 	$(QUIET)$(CP) --changed -fv "$@" "$(IPRT_OUT_DIR)/oiddb.h"
 
+# Set the defines that utf8-posix.cpp needs. It's used by several targets.
+#
+r3/posix/utf8-posix.cpp_DEFS.freebsd = $(VBOX_ICONV_DEFS)
 
 #
 # Unicode Specification reader used to regenerate unidata-*.cpp.
@@ -1523,6 +1526,7 @@ RuntimeBaseR3_SOURCES.freebsd = \
 	generic/RTProcDaemonize-generic.cpp \
 	generic/RTProcIsRunningByName-generic.cpp \
 	generic/RTThreadGetNativeState-generic.cpp \
+	generic/system-page-size-generic.cpp \
 	r3/freebsd/fileaio-freebsd.cpp \
 	r3/freebsd/RTFileQuerySectorSize-freebsd.cpp \
 	r3/freebsd/mp-freebsd.cpp \
@@ -3092,6 +3096,8 @@ VBoxRT_LDFLAGS.win             = /MANIFEST \
 	/delayload:oleaut32.dll \
 	/delayload:advapi32.dll \
 	/delayload:mpr.dll
+VBoxRT_LDFLAGS.freebsd		= \
+	-Wl,--allow-multiple-definition
 # We could alias symbols on linux this way:
 #ifn1of ($(KBUILD_TARGET), darwin os2 solaris win)
 # if "$(substr $(VBOX_GCC_std),-2)" >= "17"