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package/linux-headers: add help text for manual header selection

PATCH New Mark Corbin 2 participants 4 messages Aug 23, 2018 – Aug 24, 2018

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Mark Corbin

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#0 lore raw

PATCH v2 1/3 package/linux-headers: add help text for manual header selection

Add kconfig help text that explains how to manually specify an official Linux version to use for the kernel headers.

Signed-off-by Mark Corbin <[email protected]>
---
 package/linux-headers/Config.in.host | 8 ++++++++
 1 file changed, 8 insertions(+)
package/linux-headers/Config.in.host +8 -0
index adac3f6398..5c20c997f9 100644
@@ -77,6 +77,14 @@ config BR2_KERNEL_HEADERS_4_17
 
 config BR2_KERNEL_HEADERS_VERSION
 	bool "Manually specified Linux version"
+	help
+	  This option allows you to use a specific official version from
+	  kernel.org, like 2.6.x, 2.6.x.y, 3.x.y, ...
+
+	  Note: you cannot use this option to select a _longterm_ 2.6
+	  kernel, because these kernels are not located at the standard
+	  URL at kernel.org. Instead, select "Custom tarball" and
+	  specify the right URL directly.
 
 endchoice
Signature · 1 line
2.17.1
author
#1 lore raw

PATCH v2 2/3 linux: add hash file

Added a hash file for the Linux kernel. Hashes have been copied from the appropriate sha256sums.asc files on kernel.org. The Linux hash file is also shared with the linux-headers package via a symbolic link.

Signed-off-by Mark Corbin <[email protected]>

---
Changes v1 -> v2:
- use sha256 hashes from kernel.org instead of calculating values locally (Baruch)

---
 linux/linux.hash                         | 14 ++++++++++++++
 package/linux-headers/linux-headers.hash |  1 +
 2 files changed, 15 insertions(+)
 create mode 100644 linux/linux.hash
 create mode 120000 package/linux-headers/linux-headers.hash
linux/linux.hash new file +14 -0
new file mode 100644
index 0000000000..5691d7f8af
@@ -0,0 +1,14 @@
+# From https://www.kernel.org/pub/linux/kernel/v4.x/sha256sums.asc
+sha256 4d8b5e3772771b60c9c6d875af8e59fbcd34d4291827c110501611da09b79b0f  linux-4.17.18.tar.xz
+sha256 41026d713ba4f7a5e9d514b876ce4ed28a1d993c0c58b42b2a2597d6a0e83021  linux-4.16.18.tar.xz
+sha256 3f89cd717e0d497ba4818e145a33002f4c15032e355c1ad6d3d7f31f122caf41  linux-4.15.18.tar.xz
+sha256 a38061ca4c864d11a72beb3dc5918a99f13372fe9ee35508d004fdfabd460413  linux-4.14.66.tar.xz
+sha256 b025f3fc40801aff1a2d3438d50be56502eb5bf51a7094e85b5205fa71bec731  linux-4.13.16.tar.xz
+sha256 86ab3f45b1aff5f8a9ec72c232bccf5a314edb2a09fb8664c5902b03edacfd27  linux-4.12.14.tar.xz
+sha256 2e37d4e18094f66b8bd632cac0a3c08a39a14a1ada4a1c78a5e336c4d3036192  linux-4.11.12.tar.xz
+sha256 1ae7056b5b6a3fb653b065503afeb514afc870e103b0f857d0d13a6d06fd66ee  linux-4.10.17.tar.xz
+sha256 8d12ceab9f8cbfd0555c881b35ed4384cf3ea8e223d894c030b04786005e5071  linux-4.9.123.tar.xz
+sha256 5fea8c318626de61e99869eb6dde77e8af2419c5cf6f346280da4be1ab8089e8  linux-4.4.151.tar.xz
+sha256 6ad9389e55e0ea57768eae173747058a4487fa3630e10a7999cfec9f945e559c  linux-4.1.52.tar.xz
+# From https://www.kernel.org/pub/linux/kernel/v3.x/sha256sums.asc
+sha256 ad96d797571496c969aa71bf5d08e9d2a8c84458090d29a120f1b2981185a99e  linux-3.2.102.tar.xz
package/linux-headers/linux-headers.hash new file +1 -0
new file mode 120000
index 0000000000..04970e97c1
@@ -0,0 +1 @@
+../../linux/linux.hash
\ No newline at end of file
Signature · 1 line
2.17.1
author
#2 lore raw

PATCH v2 3/3 package/linux-headers: add support for custom headers

In reply to Mark Corbin

Add support for building toolchains against custom headers. Allows the selection of a manual version, custom tarball or custom git repository for the kernel headers. This enables toolchains to be built against custom kernel headers without having to build a full kernel.

This is particularly useful for new architectures, such as RISC-V where updated kernel headers may not have made it into the mainline kernel yet.

Signed-off-by Mark Corbin <[email protected]>
---
 package/linux-headers/Config.in.host   | 40 ++++++++++-
 package/linux-headers/linux-headers.mk | 94 +++++++++++++++-----------
 2 files changed, 93 insertions(+), 41 deletions(-)
package/linux-headers/Config.in.host +39 -1
index 5c20c997f9..f8f78f90d1 100644
@@ -86,6 +86,23 @@ config BR2_KERNEL_HEADERS_VERSION
 	  URL at kernel.org. Instead, select "Custom tarball" and
 	  specify the right URL directly.
 
+config BR2_KERNEL_HEADERS_CUSTOM_TARBALL
+	bool "Custom tarball"
+	help
+	  This option allows you to specify a URL pointing to a kernel
+	  source tarball. This URL can use any protocol recognized by
+	  Buildroot, like http://, ftp://, file:// or scp://.
+
+	  When pointing to a local tarball using file://, you may want
+	  to use a make variable like $(TOPDIR) to reference the root of
+	  the Buildroot tree.
+
+config BR2_KERNEL_HEADERS_CUSTOM_GIT
+	bool "Custom Git repository"
+	help
+	  This option allows Buildroot to get the Linux kernel source
+	  code from a Git repository.
+
 endchoice
 
 config BR2_DEFAULT_KERNEL_VERSION

@@ -95,9 +112,27 @@ config BR2_DEFAULT_KERNEL_VERSION
 	  Specify the version you want to use.
 	  E.G.: 3.6.10
 
+config BR2_KERNEL_HEADERS_CUSTOM_TARBALL_LOCATION
+	string "URL of custom kernel tarball"
+	depends on BR2_KERNEL_HEADERS_CUSTOM_TARBALL
+
+if BR2_KERNEL_HEADERS_CUSTOM_GIT
+
+config BR2_KERNEL_HEADERS_CUSTOM_REPO_URL
+	string "URL of custom repository"
+
+config BR2_KERNEL_HEADERS_CUSTOM_REPO_VERSION
+	string "Custom repository version"
+	help
+	  Revision to use in the typical format used by
+	  Git/Mercurial/Subversion E.G. a sha id, a tag, branch, ..
+
+endif
+
 choice
 	bool "Custom kernel headers series"
-	depends on BR2_KERNEL_HEADERS_VERSION || BR2_KERNEL_HEADERS_AS_KERNEL
+	depends on BR2_KERNEL_HEADERS_VERSION || BR2_KERNEL_HEADERS_AS_KERNEL || \
+		   BR2_KERNEL_HEADERS_CUSTOM_TARBALL || BR2_KERNEL_HEADERS_CUSTOM_GIT
 	help
 	  Specify the kernel headers series you manually selected,
 	  above.

@@ -277,3 +312,6 @@ config BR2_DEFAULT_KERNEL_HEADERS
 	default "4.16.18"	if BR2_KERNEL_HEADERS_4_16
 	default "4.17.18"	if BR2_KERNEL_HEADERS_4_17
 	default BR2_DEFAULT_KERNEL_VERSION if BR2_KERNEL_HEADERS_VERSION
+	default "custom"	if BR2_KERNEL_HEADERS_CUSTOM_TARBALL
+	default BR2_KERNEL_HEADERS_CUSTOM_REPO_VERSION \
+		if BR2_KERNEL_HEADERS_CUSTOM_GIT
package/linux-headers/linux-headers.mk +54 -40

136 lines not on this page · raw message

Signature · 1 line
2.17.1
Applied
#3 lore raw

PATCH v2 1/3 package/linux-headers: add help text for manual header selection

In reply to Mark Corbin

Hello,

Quoted 7 lines · Mark Corbin

Add kconfig help text that explains how to manually specify an official Linux version to use for the kernel headers.

Signed-off-by Mark Corbin <[email protected]>
---
 package/linux-headers/Config.in.host | 8 ++++++++
 1 file changed, 8 insertions(+)

Applied to master, thanks.

Thomas

Signature · 3 lines
Thomas Petazzoni, CTO, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com