[PATCH v2] Stop build recurse into not-compiled directories

[Iulia Manda]

This patch stops the build from recursing into four directories (acpi, kprobes,
quota, vmw_vsock) where no file gets compiled in a tinyconfig build. This is
speeding up the compilation process.

Signed-off-by: Iulia Manda <iulia....@gmail.com>
---
Changes since v1:
- add missing CONFIG_ prefix

arch/x86/kernel/Makefile | 4 ++--
fs/Makefile | 2 +-
net/Makefile | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile
index 5d4502c..cb22548 100644
--- a/arch/x86/kernel/Makefile
+++ b/arch/x86/kernel/Makefile
@@ -48,7 +48,7 @@ obj-$(CONFIG_INTEL_TXT) += tboot.o
obj-$(CONFIG_ISA_DMA_API) += i8237.o
obj-$(CONFIG_STACKTRACE) += stacktrace.o
obj-y += cpu/
-obj-y += acpi/
+obj-$(CONFIG_ACPI) += acpi/
obj-y += reboot.o
obj-$(CONFIG_X86_MSR) += msr.o
obj-$(CONFIG_X86_CPUID) += cpuid.o
@@ -70,7 +70,7 @@ obj-$(CONFIG_KEXEC) += machine_kexec_$(BITS).o
obj-$(CONFIG_KEXEC) += relocate_kernel_$(BITS).o crash.o
obj-$(CONFIG_KEXEC_FILE) += kexec-bzimage64.o
obj-$(CONFIG_CRASH_DUMP) += crash_dump_$(BITS).o
-obj-y += kprobes/
+obj-$(CONFIG_KPROBES) += kprobes/
obj-$(CONFIG_MODULES) += module.o
obj-$(CONFIG_DOUBLEFAULT) += doublefault.o
obj-$(CONFIG_KGDB) += kgdb.o
diff --git a/fs/Makefile b/fs/Makefile
index bedff48..fcd62c0 100644
--- a/fs/Makefile
+++ b/fs/Makefile
@@ -48,7 +48,7 @@ obj-$(CONFIG_SYSCTL) += drop_caches.o

obj-$(CONFIG_FHANDLE) += fhandle.o

-obj-y += quota/
+obj-$(CONFIG_QUOTA) += quota/

obj-$(CONFIG_PROC_FS) += proc/
obj-$(CONFIG_KERNFS) += kernfs/
diff --git a/net/Makefile b/net/Makefile
index 38704bd..69eb208 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -68,7 +68,7 @@ obj-$(CONFIG_CEPH_LIB) += ceph/
obj-$(CONFIG_BATMAN_ADV) += batman-adv/
obj-$(CONFIG_NFC) += nfc/
obj-$(CONFIG_OPENVSWITCH) += openvswitch/
-obj-$(CONFIG_VSOCKETS) += vmw_vsock/
+obj-$(CONFIG_VSOCKETS) += vmw_vsock/
obj-$(CONFIG_NET_MPLS_GSO) += mpls/
obj-$(CONFIG_HSR) += hsr/
ifneq ($(CONFIG_NET_SWITCHDEV),)
--
1.7.10.4