This patch should be obviously correct.
diff -urN linux-2.4.0t13p1/arch/i386/Makefile linux/arch/i386/Makefile
--- linux-2.4.0t13p1/arch/i386/Makefile Thu Dec 14 20:54:41 2000
+++ linux/arch/i386/Makefile Thu Dec 14 21:04:34 2000
@@ -91,7 +91,7 @@
ifdef CONFIG_MATH_EMULATION
SUBDIRS += arch/i386/math-emu
-SUBDIRS += arch/i386/math-emu/math.o
+DRIVERS += arch/i386/math-emu/math.o
endif
arch/i386/kernel: dummy
--
Brian Gerst