[OE-core] [PATCH] image.bbclass: add do_rootfs vardeps for {COMPRESS, IMAGE}_CMD_*

[Christopher Larson]

From: Christopher Larson <chris_larson at mentor.com>

We want do_rootfs to rerun if the fstype or compression commands or
dependencies change for any of our configured fstypes (IMAGE_FSTYPES).
IMAGE_TYPEDEP isn't explicitly handled, as it's traversed already, so the end
result will change if it does, and we only really care about the results, not
how we got there. This uses oe.image.Image()._get_image_types() to get the
info about the image and compression types in use.

Signed-off-by: Christopher Larson <chris_larson at mentor.com>
---
 meta/classes/image.bbclass | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/meta/classes/image.bbclass b/meta/classes/image.bbclass
index fc7d64d..86a98bb 100644
--- a/meta/classes/image.bbclass
+++ b/meta/classes/image.bbclass
@@ -106,14 +106,30 @@ python () {
             d.setVarFlag(var, 'func', '1')
 }
 
+def fstype_variables(d):
+    import oe.image
+
+    image = oe.image.Image(d)
+    alltypes, fstype_groups, cimages = image._get_image_types()
+    fstype_vars = set()
+    for fstype_group in fstype_groups:
+        for fstype in fstype_group:
+            fstype_vars.add('IMAGE_CMD_' + fstype)
+            if fstype in cimages:
+                for ctype in cimages[fstype]:
+                    fstype_vars.add('COMPRESS_CMD_' + ctype)
+
+    return sorted(fstype_vars)
+
 def rootfs_variables(d):
     from oe.rootfs import variable_depends
-    variables = ['IMAGE_DEVICE_TABLES','BUILD_IMAGES_FROM_FEEDS','IMAGE_TYPEDEP_','IMAGE_TYPES_MASKED','IMAGE_ROOTFS_ALIGNMENT','IMAGE_OVERHEAD_FACTOR','IMAGE_ROOTFS_SIZE','IMAGE_ROOTFS_EXTRA_SPACE',
+    variables = ['IMAGE_DEVICE_TABLES','BUILD_IMAGES_FROM_FEEDS','IMAGE_TYPES_MASKED','IMAGE_ROOTFS_ALIGNMENT','IMAGE_OVERHEAD_FACTOR','IMAGE_ROOTFS_SIZE','IMAGE_ROOTFS_EXTRA_SPACE',
                  'IMAGE_ROOTFS_MAXSIZE','IMAGE_NAME','IMAGE_LINK_NAME','IMAGE_MANIFEST','DEPLOY_DIR_IMAGE','RM_OLD_IMAGE','IMAGE_FSTYPES','IMAGE_INSTALL_COMPLEMENTARY','IMAGE_LINGUAS','SDK_OS',
                  'SDK_OUTPUT','SDKPATHNATIVE','SDKTARGETSYSROOT','SDK_DIR','SDK_VENDOR','SDKIMAGE_INSTALL_COMPLEMENTARY','SDK_PACKAGE_ARCHS','SDK_OUTPUT','SDKTARGETSYSROOT','MULTILIBRE_ALLOW_REP',
                  'MULTILIB_TEMP_ROOTFS','MULTILIB_VARIANTS','MULTILIBS','ALL_MULTILIB_PACKAGE_ARCHS','MULTILIB_GLOBAL_VARIANTS','BAD_RECOMMENDATIONS','NO_RECOMMENDATIONS','PACKAGE_ARCHS',
                  'PACKAGE_CLASSES','TARGET_VENDOR','TARGET_VENDOR','TARGET_ARCH','TARGET_OS','OVERRIDES','BBEXTENDVARIANT','FEED_DEPLOYDIR_BASE_URI','INTERCEPT_DIR','USE_DEVFS',
                  'COMPRESSIONTYPES', 'IMAGE_GEN_DEBUGFS']
+    variables.extend(fstype_variables(d))
     variables.extend(command_variables(d))
     variables.extend(variable_depends(d))
     return " ".join(variables)
-- 
2.2.1