diff --git a/src/cpu/intel/Makefile.inc b/src/cpu/intel/Makefile.inc
index afe5cd3c79..d986c6350d 100644
--- a/src/cpu/intel/Makefile.inc
+++ b/src/cpu/intel/Makefile.inc
@@ -2,9 +2,8 @@
 # Therefore:
 # ONLY include Makefile.inc from socket directories!
 
-subdirs-y += speedstep
-subdirs-y += socket_mFCPGA478
-subdirs-y += socket_PGA370
+subdirs-$(CONFIG_CPU_INTEL_SOCKET_MFCPGA478) += socket_mFCPGA478
+subdirs-$(CONFIG_CPU_INTEL_SOCKET_PGA370) += socket_PGA370
 
 #socket_mPGA478
 #socket_mPGA479M
diff --git a/src/cpu/intel/socket_PGA370/Makefile.inc b/src/cpu/intel/socket_PGA370/Makefile.inc
index 46a851a3d5..b56585e889 100644
--- a/src/cpu/intel/socket_PGA370/Makefile.inc
+++ b/src/cpu/intel/socket_PGA370/Makefile.inc
@@ -18,17 +18,16 @@
 ## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301 USA
 ##
 
-ifeq ($(CONFIG_CPU_INTEL_SOCKET_PGA370),y)
-	obj-y += socket_PGA370.o
-	subdirs-y += ../model_6xx
-	subdirs-y += ../../x86/tsc
-	subdirs-y += ../../x86/mtrr
-	subdirs-y += ../../x86/fpu
-	subdirs-y += ../../x86/mmx
-	subdirs-y += ../../x86/sse
-	subdirs-y += ../../x86/lapic
-	subdirs-y += ../../x86/cache
-	subdirs-y += ../../x86/smm
-	subdirs-y += ../microcode
-endif
+obj-y += socket_PGA370.o
+subdirs-y += ../model_6xx
+subdirs-y += ../../x86/tsc
+subdirs-y += ../../x86/mtrr
+subdirs-y += ../../x86/fpu
+subdirs-y += ../../x86/mmx
+subdirs-y += ../../x86/sse
+subdirs-y += ../../x86/lapic
+subdirs-y += ../../x86/cache
+subdirs-y += ../../x86/smm
+subdirs-y += ../microcode
+
 
diff --git a/src/cpu/intel/socket_mFCPGA478/Makefile.inc b/src/cpu/intel/socket_mFCPGA478/Makefile.inc
index 808dd4ffd1..5da270215a 100644
--- a/src/cpu/intel/socket_mFCPGA478/Makefile.inc
+++ b/src/cpu/intel/socket_mFCPGA478/Makefile.inc
@@ -1,17 +1,17 @@
-ifeq ($(CONFIG_CPU_INTEL_SOCKET_MFCPGA478),y)
-	obj-y += socket_mFCPGA478.o
-	subdirs-y += ../model_69x
-	subdirs-y += ../model_6dx
-	subdirs-y += ../model_6ex
-	subdirs-y += ../model_6fx
-	subdirs-y += ../../x86/tsc
-	subdirs-y += ../../x86/mtrr
-	subdirs-y += ../../x86/fpu
-	subdirs-y += ../../x86/mmx
-	subdirs-y += ../../x86/sse
-	subdirs-y += ../../x86/lapic
-	subdirs-y += ../../x86/cache
-	subdirs-y += ../../x86/smm
-	subdirs-y += ../microcode
-	subdirs-y += ../hyperthreading
-endif
+obj-y += socket_mFCPGA478.o
+subdirs-y += ../model_69x
+subdirs-y += ../model_6dx
+subdirs-y += ../model_6ex
+subdirs-y += ../model_6fx
+subdirs-y += ../../x86/tsc
+subdirs-y += ../../x86/mtrr
+subdirs-y += ../../x86/fpu
+subdirs-y += ../../x86/mmx
+subdirs-y += ../../x86/sse
+subdirs-y += ../../x86/lapic
+subdirs-y += ../../x86/cache
+subdirs-y += ../../x86/smm
+subdirs-y += ../microcode
+subdirs-y += ../hyperthreading
+subdirs-y += ../speedstep
+
diff --git a/src/cpu/intel/speedstep/Makefile.inc b/src/cpu/intel/speedstep/Makefile.inc
index 4351d68c21..1c948af316 100644
--- a/src/cpu/intel/speedstep/Makefile.inc
+++ b/src/cpu/intel/speedstep/Makefile.inc
@@ -1,5 +1 @@
-ifeq ($(CONFIG_HAVE_ACPI_TABLES), y)
-ifeq ($(CONFIG_CPU_INTEL_SOCKET_MFCPGA478), y)
-	obj-y += acpi.o
-endif
-endif
+obj-$(CONFIG_HAVE_ACPI_TABLES) += acpi.o