[Buildroot] [PATCH 1/1 v4] Add kernel compression selection.
Sagaert Johan
sagaert.johan at proximus.be
Thu Apr 2 23:31:07 UTC 2015
This selection will ensure that the correct host tools
will be build used for the kernel compression method used.
Signed-off-by: Sagaert Johan <sagaert.johan at proximus.be>
---
V3->V4
Add selection menu in the kernel menu section.
This ensures only things needed are build.
V2->V3
Unconditionally build lz4.
The building overhead is negligible.
V1->V2
Only add the host-lz4 dependency when ARM is selected.
Don't touch host-lz4 package.
---
linux/Config.in | 28 ++++++++++++++++++++++++++++
linux/linux.mk | 13 ++++++++++++-
2 files changed, 40 insertions(+), 1 deletion(-)
diff --git a/linux/Config.in b/linux/Config.in
index a1113dd..e5372cb 100644
--- a/linux/Config.in
+++ b/linux/Config.in
@@ -247,6 +247,34 @@ config BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
endchoice
+#
+# Kernel compression format
+#
+
+choice
+ prompt "Kernel compression format"
+ help
+ This selection will just ensure that the correct host tools are build.
+ The actual compression for the kernel should be selected in the
+ kernel configuration menu.
+
+config BR2_LINUX_KERNEL_GZIP
+ bool "gzip compression"
+
+config BR2_LINUX_KERNEL_LZ4
+ bool "lz4 compression"
+
+config BR2_LINUX_KERNEL_LZMA
+ bool "lzma compression"
+
+config BR2_LINUX_KERNEL_LZO
+ bool "lzo compression"
+
+config BR2_LINUX_KERNEL_XZ
+ bool "xz compression"
+
+endchoice
+
config BR2_LINUX_KERNEL_IMAGE_TARGET_NAME
string "Kernel image target name"
depends on BR2_LINUX_KERNEL_IMAGE_TARGET_CUSTOM
diff --git a/linux/linux.mk b/linux/linux.mk
index 22fce35..67ea544 100644
--- a/linux/linux.mk
+++ b/linux/linux.mk
@@ -49,7 +49,18 @@ LINUX_PATCHES = $(call qstrip,$(BR2_LINUX_KERNEL_PATCH))
LINUX_PATCH = $(filter ftp://% http://% https://%,$(LINUX_PATCHES))
LINUX_INSTALL_IMAGES = YES
-LINUX_DEPENDENCIES += host-kmod host-lzop
+LINUX_DEPENDENCIES += host-kmod
+
+# host tools needed for kernel compression
+ifeq ($(BR2_LINUX_KERNEL_LZ4),y)
+LINUX_DEPENDENCIES += host-lz4
+else ifeq ($(BR2_LINUX_KERNEL_LZMA),y)
+LINUX_DEPENDENCIES += host-lzma
+else ifeq ($(BR2_LINUX_KERNEL_LZO),y)
+LINUX_DEPENDENCIES += host-lzop
+else ifeq ($(BR2_LINUX_KERNEL_XZ),y)
+LINUX_DEPENDENCIES += host-xz
+endif
ifeq ($(BR2_LINUX_KERNEL_UBOOT_IMAGE),y)
LINUX_DEPENDENCIES += host-uboot-tools
--
2.3.3
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