--- a/tests/lib/libm/Makefile	Sun Sep 07 04:08:23 2025 +0000
+++ b/tests/lib/libm/Makefile	Sun Sep 07 19:20:57 2025 +1000
@@ -9,6 +9,10 @@ COPTS+=	-mfloat-ieee -mieee-with-inexact
 .endif
 COPTS+=	-fno-builtin
 
+.if ${MACHINE} == "m68k"
+CPPFLAGS+= -O0
+.endif
+
 CPPFLAGS.t_fenv.c+=	-D__TEST_FENV
 CPPFLAGS.t_fe_round.c+=	-D__TEST_FENV
 CPPFLAGS.t_ilogb.c+=	-D__TEST_FENV