diff options
| -rw-r--r-- | meta/classes/distrooverrides.bbclass | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/meta/classes/distrooverrides.bbclass b/meta/classes/distrooverrides.bbclass new file mode 100644 index 0000000000..9a42712f20 --- /dev/null +++ b/meta/classes/distrooverrides.bbclass | |||
| @@ -0,0 +1,32 @@ | |||
| 1 | # Turns certain DISTRO_FEATURES into overrides with the same | ||
| 2 | # name plus a df- prefix. Ensures that these special | ||
| 3 | # distro features remain set also for native and nativesdk | ||
| 4 | # recipes, so that these overrides can also be used there. | ||
| 5 | # | ||
| 6 | # This makes it simpler to write .bbappends that only change the | ||
| 7 | # task signatures of the recipe if the change is really enabled, | ||
| 8 | # for example with: | ||
| 9 | # do_install_append_df-my-feature () { ... } | ||
| 10 | # where "my-feature" is a DISTRO_FEATURE. | ||
| 11 | # | ||
| 12 | # The class is meant to be used in a layer.conf or distro | ||
| 13 | # .inc file with: | ||
| 14 | # INHERIT += "distrooverrides" | ||
| 15 | # DISTRO_FEATURES_OVERRIDES += "my-feature" | ||
| 16 | # | ||
| 17 | # Beware that this part of OVERRIDES changes during parsing, so usage | ||
| 18 | # of these overrides should be limited to .bb and .bbappend files, | ||
| 19 | # because then DISTRO_FEATURES is final. | ||
| 20 | |||
| 21 | DISTRO_FEATURE_OVERRIDES ?= "" | ||
| 22 | DISTRO_FEATURE_OVERRIDES[doc] = "A space-separated list of <feature> entries. \ | ||
| 23 | Each entry is added to OVERRIDES as df-<feature> if <feature> is in DISTRO_FEATURES." | ||
| 24 | |||
| 25 | DISTRO_FEATURES_FILTER_NATIVE_append = " ${DISTRO_FEATURES_OVERRIDES}" | ||
| 26 | DISTRO_FEATURES_FILTER_NATIVESDK_append = " ${DISTRO_FEATURES_OVERRIDES}" | ||
| 27 | |||
| 28 | # If DISTRO_FEATURES_OVERRIDES or DISTRO_FEATURES show up in a task | ||
| 29 | # signature because of this line, then the task dependency on | ||
| 30 | # OVERRIDES itself should be fixed. Excluding these two variables | ||
| 31 | # with DISTROOVERRIDES[vardepsexclude] would just work around the problem. | ||
| 32 | DISTROOVERRIDES .= "${@ ''.join([':df-' + x for x in sorted(set(d.getVar('DISTRO_FEATURES_OVERRIDES').split()) & set((d.getVar('DISTRO_FEATURES') or '').split()))]) }" | ||
