[PATCH 1/3] uboot-config: fix devtool modify with kernel-fitimage

[Adrian Freihofer <adrian.freihofer@gmail.com>]

From: Adrian Freihofer <adrian.freihofer@siemens.com>

How to reproduce:
- UBOOT_CONFIG must be used. With UBOOT_MACHINE it works fine.
  A simple example based on oe-core is to modify the
  beaglebone-yocto.conf file like this:
  -UBOOT_MACHINE = "am335x_evm_defconfig"
  +UBOOT_CONFIG = "foo"
  +UBOOT_CONFIG[foo] = "am335x_evm_defconfig"
- A build configuration which inherits the kernel-fitimage.bbclass is
  needed. For example:
  MACHINE = "beaglebone-yocto"
  KERNEL_IMAGETYPE = "Image"
  KERNEL_IMAGETYPES += " fitImage "
  KERNEL_CLASSES = " kernel-fitimage "

devtool modify linux-yocto
devtool build linux-yocto
...
| cp: cannot stat '.../linux-yocto-6.6.21+git/am335x_evm_defconfig/.config':
  No such file or directory
| WARNING: .../linux-yocto/6.6.21+git/temp/run.do_configure.2081673:172 exit 1
  from 'cp .../linux-yocto-6.6.21+git/am335x_evm_defconfig/.config
  .../build/workspace/sources/linux-yocto/.config.baseline'

The reason for this problem is that the uboot-config.bbclass sets the
variable KCONFIG_CONFIG_ROOTDIR to a path that makes sense for u-boot,
but not for other recipes. However, the kernel-fitimage.bbclasse, for
example, inherits the uboot-config.bbclass, which brings the
u-boot-specific path into the kernel build context.

This change removes the uboot-specific KCONFIG_CONFIG_ROOTDIR path from
recipes other than u-boot itself.

Signed-off-by: Adrian Freihofer <adrian.freihofer@siemens.com>
---
 meta/classes-recipe/uboot-config.bbclass | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/meta/classes-recipe/uboot-config.bbclass b/meta/classes-recipe/uboot-config.bbclass
index e55fc38b7c7..09001997d3d 100644
--- a/meta/classes-recipe/uboot-config.bbclass
+++ b/meta/classes-recipe/uboot-config.bbclass
@@ -101,9 +101,9 @@ python () {
     # The "doc" varflag is special, we don't want to see it here
     ubootconfigflags.pop('doc', None)
     ubootconfig = (d.getVar('UBOOT_CONFIG') or "").split()
+    PN = d.getVar("PN")
 
     if not ubootmachine and not ubootconfig:
-        PN = d.getVar("PN")
         FILE = os.path.basename(d.getVar("FILE"))
         bb.debug(1, "To build %s, see %s for instructions on \
                  setting up your machine config" % (PN, FILE))
@@ -140,9 +140,12 @@ python () {
             if not found:
                 raise bb.parse.SkipRecipe("The selected UBOOT_CONFIG key %s has no match in %s." % (ubootconfig, ubootconfigflags.keys()))
 
-            if len(ubootconfig) == 1:
-                d.setVar('KCONFIG_CONFIG_ROOTDIR', os.path.join(d.getVar("B"), d.getVar("UBOOT_MACHINE").strip()))
-            else:
-                # Disable menuconfig for multiple configs
-                d.setVar('KCONFIG_CONFIG_ENABLE_MENUCONFIG', "false")
+            # This recipe might be inherited e.g. by the kernel recipe via kernel-fitimage.bbclass
+            # Ensure the uboot specific menuconfig settings do not leak into other recipes
+            if 'u-boot' in PN:
+                if len(ubootconfig) == 1:
+                    d.setVar('KCONFIG_CONFIG_ROOTDIR', os.path.join(d.getVar("B"), d.getVar("UBOOT_MACHINE").strip()))
+                else:
+                    # Disable menuconfig for multiple configs
+                    d.setVar('KCONFIG_CONFIG_ENABLE_MENUCONFIG', "false")
 }
-- 
2.46.0