From ea604716d9852e5b5fe0e158b822ea0878f3925f Mon Sep 17 00:00:00 2001
From: "Yann E. MORIN\"" <yann.morin.1998@anciens.enib.fr>
Date: Tue, 3 Mar 2009 18:43:38 +0000
Subject: When using custom Linux kernel headers, allow using a tarball.

 /trunk/scripts/build/kernel/linux.sh |   19    16     3     0 ++++++++++++++++---
 /trunk/config/kernel/linux.in        |   35    26     9     0 ++++++++++++++++++++++++++---------
 2 files changed, 42 insertions(+), 12 deletions(-)

diff --git a/config/kernel/linux.in b/config/kernel/linux.in
index c5b8752..2dcb34b 100644
--- a/config/kernel/linux.in
+++ b/config/kernel/linux.in
@@ -286,20 +286,37 @@ endif
 
 config KERNEL_LINUX_USE_CUSTOM_DIR
     bool
-    prompt "Use custom directory"
+    prompt "Use custom headers"
     help
       If you have some kernel headers lying around, you can enter the path
       below.
 
-config KERNEL_LINUX_CUSTOM_DIR
-    string
-    prompt "Where are those custom headers?"
-    depends on KERNEL_LINUX_USE_CUSTOM_DIR
+if KERNEL_LINUX_USE_CUSTOM_DIR
+
+config KERNEL_LINUX_CUSTOM_IS_TARBALL
+    bool
+    prompt "This is a tarball"
+    default n
     help
-      Enter the base directory where the headers are to be found.
+      If you say 'n' here, the path below is expected to point to a directory
+      containing readily prepared headers
+      
+      If you say 'y' here, then the path below is expected to point to a
+      tarball of such a directory.
+      
+      Eg., if your headers are available in: /foo/bar/buz/my_hdrs/include,
+      say 'n' here, and enter: /foo/bar/buz/my_hdrs below.
       
-      Eg. if the headers are in /some/place/include, then enter /some/place.
-          This is the same path you entered when you typed:
-            make INSTALL_HDR_PATH=/some/place headers_install
+      Now, passing a tarball around is easier than passing a directory, so
+      if you want to, you can make a tarball of /foo/bar/buz/my_hdrs/include,
+      say 'y' here, and enter the path to this tarball below.
+
+config KERNEL_LINUX_CUSTOM_PATH
+    string
+    prompt "Path to custom headers directory/tarball"
+    help
+      See KERNEL_LINUX_CUSTOM_IS_TARBALL, above.
+
+endif # KERNEL_LINUX_USE_CUSTOM_DIR
 
 endchoice
diff --git a/scripts/build/kernel/linux.sh b/scripts/build/kernel/linux.sh
index c8dbead..6563260 100644
--- a/scripts/build/kernel/linux.sh
+++ b/scripts/build/kernel/linux.sh
@@ -78,9 +78,22 @@ do_kernel_install() {
 # modified (read: customised) kernel tree, or using pre-2.6.18 headers, such
 # as 2.4). In this case, simply copy the headers in place
 do_kernel_preinstalled() {
-    CT_DoLog EXTRA "Copying preinstalled kernel headers"
+    local tar_opt
+
+    CT_DoLog EXTRA "Installing custom kernel headers"
 
     mkdir -p "${CT_SYSROOT_DIR}/usr"
-    cd "${CT_KERNEL_LINUX_CUSTOM_DIR}"
-    CT_DoExecLog ALL cp -rv include "${CT_SYSROOT_DIR}/usr"
+    cd "${CT_SYSROOT_DIR}/usr"
+    if [ "${CT_KERNEL_LINUX_CUSTOM_IS_TARBALL}" = "y" ]; then
+        case "${CT_KERNEL_LINUX_CUSTOM_PATH}" in
+            *.tar)      ;;
+            *.tgz)      tar_opt=--gzip;;
+            *.tar.gz)   tar_opt=--gzip;;
+            *.tar.bz2)  tar_opt=--bzip2;;
+            *.tar.lzma) tar_opt=--lzma;;
+        esac
+        CT_DoExecLog ALL tar x ${tar_opt} -vf ${CT_KERNEL_LINUX_CUSTOM_PATH}
+    else
+        CT_DoExecLog ALL cp -rv "${CT_KERNEL_LINUX_CUSTOM_PATH}/include" .
+    fi
 }
-- 
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