diff --git a/drivers/Makefile b/drivers/Makefile
index 9c3e31674..8183e9105 100644
--- a/drivers/Makefile
+++ b/drivers/Makefile
@@ -10,14 +10,10 @@ SUBDIR=	at_wini bios_wini floppy log tty pci .WAIT ramdisk .WAIT memory
 
 .else
 
-.if ${COMPILER_TYPE} == "gnu"
-SUBDIR = acpi
-.endif
-
 # memory driver must be last for ramdisk image
 SUBDIR+= ahci amddev atl2 at_wini audio bios_wini dec21140A dp8390 dpeth \
 	e1000 filter floppy fxp hello lance log orinoco pci printer \
-	random readclock rtl8139 rtl8169 ti1225 tty \
+	random readclock rtl8139 rtl8169 ti1225 tty acpi \
 	.WAIT ramdisk .WAIT memory
 
 .endif
diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile
index c05037485..11beadb54 100644
--- a/drivers/acpi/Makefile
+++ b/drivers/acpi/Makefile
@@ -1,8 +1,8 @@
-.if ${COMPILER_TYPE} == "ack"
-all:
-	echo "Skipping ACPI driver, ACK compiler in use"
-.else
 # The ACPI driver is compilable only with a "gnu" type compiler
+.if ${COMPILER_TYPE} != "gnu"
+CC:=clang
+COMPILER_TYPE:=gnu
+.endif
 
 PROG=	acpi
 
@@ -150,5 +150,3 @@ MAN=
 BINDIR?= /usr/sbin
 
 .include <minix.service.mk>
-
-.endif
diff --git a/drivers/ramdisk/Makefile b/drivers/ramdisk/Makefile
index 1dcbcfad1..f96f35cd3 100644
--- a/drivers/ramdisk/Makefile
+++ b/drivers/ramdisk/Makefile
@@ -10,8 +10,7 @@ SCRIPTS=newroot
 PROGRAMS+= ahci ext2
 .endif
 
-# acpi is not compiled with ack
-.if ${COMPILER_TYPE} == "gnu" && ${MKACPI} != "no"
+.if ${MKACPI} != "no"
 PROGRAMS+= acpi
 .endif
 
@@ -166,15 +165,7 @@ rs.single: ../../etc/rs.single
 	install ${STRIPFLAG} ../../etc/$@ $@
 
 proto.gen: $(PROGRAMS) $(SCRIPTS) proto.sh ${PROTO}
+	for p in $(PROGRAMS); do file $$p | grep -q ELF && strip -s $$p; done
 	sh -e proto.sh ${PROTO} >proto.gen
 
-.if ${OBJECT_FMT} == "ELF"
-proto.gen: elfstrip
-
-.PHONY: elfstrip
-
-elfstrip: $(PROGRAMS)
-	strip -s $(PROGRAMS)
-.endif
-
 .include <minix.service.mk>
diff --git a/drivers/ramdisk/rc b/drivers/ramdisk/rc
index f0eeee9a4..1ea5d8ad2 100644
--- a/drivers/ramdisk/rc
+++ b/drivers/ramdisk/rc
@@ -5,9 +5,10 @@ exec >/dev/log
 exec 2>/dev/log
 exec </dev/null
 
-if [ -e /sbin/acpi ]
+ACPI=/sbin/acpi
+if [ -e $ACPI -a -n "`sysenv acpi`" ]
 then
-	/bin/service -c up /sbin/acpi
+	/bin/service -c up $ACPI
 fi
 /bin/service -c up /sbin/pci
 /bin/service -cn up /sbin/floppy -dev /dev/fd0