populate_sdk: Handle OLDEST_KERNEL

Add a check to the SDK so that it only runs on systems with kernel versions
it supports.

[YOCTO #6856]

(From OE-Core rev: b4caa8085aa15674162ff5135b13409998db9510)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 15 insertions, 0 deletions

diff --git a/meta/classes/populate_sdk_base.bbclass b/meta/classes/populate_sdk_base.bbclass
index 8b7e9ea8dd..e3adacb2c9 100644
--- a/meta/classes/populate_sdk_base.bbclass
+++ b/meta/classes/populate_sdk_base.bbclass
@@ -126,6 +126,7 @@ EOF
         # substitute variables
         sed -i -e 's#@SDK_ARCH@#${SDK_ARCH}#g' \
                 -e 's#@SDKPATH@#${SDKPATH}#g' \
+                -e 's#@OLDEST_KERNEL@#${OLDEST_KERNEL}#g' \
                 -e 's#@REAL_MULTIMACH_TARGET_SYS@#${REAL_MULTIMACH_TARGET_SYS}#g' \
                 -e '/@SDK_POST_INSTALL_COMMAND@/d' \
                 ${SDK_DEPLOY}/${TOOLCHAIN_OUTPUTNAME}.sh
diff --git a/meta/files/toolchain-shar-template.sh b/meta/files/toolchain-shar-template.sh
index 4a7fbd50c6..151b973d35 100644
--- a/meta/files/toolchain-shar-template.sh
+++ b/meta/files/toolchain-shar-template.sh
@@ -3,6 +3,20 @@
 INST_ARCH=$(uname -m | sed -e "s/i[3-6]86/ix86/" -e "s/x86[-_]64/x86_64/")
 SDK_ARCH=$(echo @SDK_ARCH@ | sed -e "s/i[3-6]86/ix86/" -e "s/x86[-_]64/x86_64/")
 
+verlte () {
+        [  "$1" = "`printf "$1\n$2" | sort -V | head -n1`" ]
+}
+
+verlt() {
+        [ "$1" = "$2" ] && return 1 || verlte $1 $2
+}
+
+verlt `uname -r` @OLDEST_KERNEL@
+if [ $? = 0 ]; then
+        echo "Error: The SDK needs a kernel > @OLDEST_KERNEL@"
+        exit 1
+fi
+
 if [ "$INST_ARCH" != "$SDK_ARCH" ]; then
         # Allow for installation of ix86 SDK on x86_64 host
         if [ "$INST_ARCH" != x86_64 -o "$SDK_ARCH" != ix86 ]; then