Index: lib/libopenbsd/Makefile
===================================================================
--- lib/libopenbsd/Makefile
+++ lib/libopenbsd/Makefile
@@ -8,6 +8,12 @@
 	ohash.c
 INTERNALLIB=
 
+.if defined(BOOTSTRAPPING) && ${.MAKE.OS} != "FreeBSD"
+# getdtablecount.c won't compile during bootstrap for Linux, but it seems like
+# it is not used by any of the cross tools so just skipping it works fine
+SRCS:=${SRCS:Ngetdtablecount.c}
+.endif
+
 CFLAGS+= -I${.CURDIR}
 
 WARNS=	3