[Buildroot] [PATCH 2/2] linux: only depend on host-lzop if needed

Yann E. MORIN yann.morin.1998 at free.fr
Sun Jan 26 13:56:27 UTC 2014


From: "Yann E. MORIN" <yann.morin.1998 at free.fr>

There is no reason to always depend on host-lzop, even when the kernel
compression is not LZO.

Since LZO is not the default compression option in the kernel (and there
is not sign that will change in the foreseeable future), it will always
appear in a condif file, whether it is a complete config file or it is
only a defconfig.

So, only depend on host-lzop if the LZO compression is enabled in the
kernel config file (either the defconfig or the custom config file).

Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
---
 linux/linux.mk | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/linux/linux.mk b/linux/linux.mk
index ab25fe9..f34bea1 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -38,7 +38,7 @@ endif
 LINUX_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH))
 
 LINUX_INSTALL_IMAGES = YES
-LINUX_DEPENDENCIES  += host-kmod host-lzop
+LINUX_DEPENDENCIES  += host-kmod
 
 ifeq ($(BR2_LINUX_KERNEL_UBOOT_IMAGE),y)
 	LINUX_DEPENDENCIES += host-uboot-tools
@@ -163,6 +163,10 @@ else ifeq ($(BR2_LINUX_KERNEL_USE_CUSTOM_CONFIG),y)
 KERNEL_SOURCE_CONFIG = $(BR2_LINUX_KERNEL_CUSTOM_CONFIG_FILE)
 endif
 
+ifeq ($(call KCONFIG_GET_OPT,CONFIG_KERNEL_LZO,$(call qstrip,$(KERNEL_SOURCE_CONFIG))),y)
+LINUX_DEPENDENCIES += host-lzop
+endif
+
 define LINUX_CONFIGURE_CMDS
 	cp $(KERNEL_SOURCE_CONFIG) $(KERNEL_ARCH_PATH)/configs/buildroot_defconfig
 	$(TARGET_MAKE_ENV) $(MAKE1) $(LINUX_MAKE_FLAGS) -C $(@D) buildroot_defconfig
-- 
1.8.1.2




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