classes: fsl-kernel-localversion: fix usage with devtool

Make fsl-kernel-localversion devtool-compatible, avoiding to depend on
${WORKDIR}/defconfig to be present. Two approaches are taken:

- for recipes inheriting kernel-yocto, LINUX_VERSION_EXTENSION is set to
  LOCALVERSION; in this way, the do_kernel_configme task will use it to
  set CONFIG_LOCALVERSION once the .config file is generated;

- for recipes not inheriting kernel-yocto, CONFIG_LOCALVERSION is simply
  appended to the .config file contained inside the build directory.

The do_kernel_localversion is being made executed after do_kernel_configme
rather than do_kernel_metadata; in this way, modifications are applied
after the config-by-fragments step has already been performed.

Signed-off-by: Francesco Valla <valla.francesco@gmail.com>
(cherry picked from commit 5d96d634568636aa41faf72356c47f0d04532c87)

1 files changed, 9 insertions, 18 deletions

diff --git a/classes/fsl-kernel-localversion.bbclass b/classes/fsl-kernel-localversion.bbclass
index c782a3d3..d4322e25 100644
--- a/classes/fsl-kernel-localversion.bbclass
+++ b/classes/fsl-kernel-localversion.bbclass
@@ -12,34 +12,25 @@
 SCMVERSION ??= "y"
 LOCALVERSION ??= "+fslc"
 
-kernel_conf_variable() {
-        CONF_SED_SCRIPT="$CONF_SED_SCRIPT /CONFIG_$1[ =]/d;"
-        if test "$2" = "n"
-        then
-                echo "# CONFIG_$1 is not set" >> ${B}/.config
-        else
-                echo "CONFIG_$1=$2" >> ${B}/.config
-        fi
-}
+# LINUX_VERSION_EXTENSION is used as CONFIG_LOCALVERSION by kernel-yocto class
+LINUX_VERSION_EXTENSION ?= "${LOCALVERSION}"
 
 do_kernel_localversion[dirs] += "${S} ${B}"
 do_kernel_localversion() {
-        mkdir -p ${B}
-        echo "" > ${B}/.config
-        CONF_SED_SCRIPT=""
 
-        kernel_conf_variable LOCALVERSION "\"${LOCALVERSION}\""
-        if [ "${SCMVERSION}" = "y" ]; then
-                kernel_conf_variable LOCALVERSION_AUTO y
+        # Fallback for recipes not able to use LINUX_VERSION_EXTENSION
+        if [ "${@bb.data.inherits_class('kernel-yocto', d)}" = "False" ]; then
+                echo "CONFIG_LOCALVERSION=${LOCALVERSION}" >> ${B}/.config
         fi
 
-        sed -e "${CONF_SED_SCRIPT}" < '${WORKDIR}/defconfig' >> '${B}/.config'
-
         if [ "${SCMVERSION}" = "y" ]; then
                 # Add GIT revision to the local version
                 head=`git --git-dir=${S}/.git rev-parse --verify --short HEAD 2> /dev/null`
                 printf "%s%s" +g $head > ${S}/.scmversion
+
+                sed -i -e "/CONFIG_LOCALVERSION_AUTO[ =]/d" ${B}/.config
+                echo "CONFIG_LOCALVERSION_AUTO=y" >> ${B}/.config
         fi
 }
 
-addtask kernel_localversion before do_configure after do_patch do_kernel_metadata
+addtask kernel_localversion before do_configure after do_patch do_kernel_configme