diff --git a/Makefrag.am b/Makefrag.am
index ea612275..69ac31a1 100644
--- a/Makefrag.am
+++ b/Makefrag.am
@@ -122,6 +122,18 @@ EXTRA_DIST += \
 	ipc/notify.defs
 
 
+#
+# SMP implementation (APIC, ACPI, etc)
+#
+
+libkernel_a_SOURCES += \
+	i386/i386at/acpi_parse_apic.h \
+	i386/i386at/acpi_parse_apic.c \
+	i386/i386/apic.h \
+	i386/i386/apic.c \
+	kern/smp.h \
+	kern/smp.c
+
 #
 # `kernel' implementation (tasks, threads, trivia, etc.).
 #