1*4882a593Smuzhiyun# Turns certain DISTRO_FEATURES into overrides with the same 2*4882a593Smuzhiyun# name plus a df- prefix. Ensures that these special 3*4882a593Smuzhiyun# distro features remain set also for native and nativesdk 4*4882a593Smuzhiyun# recipes, so that these overrides can also be used there. 5*4882a593Smuzhiyun# 6*4882a593Smuzhiyun# This makes it simpler to write .bbappends that only change the 7*4882a593Smuzhiyun# task signatures of the recipe if the change is really enabled, 8*4882a593Smuzhiyun# for example with: 9*4882a593Smuzhiyun# do_install:append:df-my-feature () { ... } 10*4882a593Smuzhiyun# where "my-feature" is a DISTRO_FEATURE. 11*4882a593Smuzhiyun# 12*4882a593Smuzhiyun# The class is meant to be used in a layer.conf or distro 13*4882a593Smuzhiyun# .inc file with: 14*4882a593Smuzhiyun# INHERIT += "distrooverrides" 15*4882a593Smuzhiyun# DISTRO_FEATURES_OVERRIDES += "my-feature" 16*4882a593Smuzhiyun# 17*4882a593Smuzhiyun# Beware that this part of OVERRIDES changes during parsing, so usage 18*4882a593Smuzhiyun# of these overrides should be limited to .bb and .bbappend files, 19*4882a593Smuzhiyun# because then DISTRO_FEATURES is final. 20*4882a593Smuzhiyun 21*4882a593SmuzhiyunDISTRO_FEATURES_OVERRIDES ?= "" 22*4882a593SmuzhiyunDISTRO_FEATURES_OVERRIDES[doc] = "A space-separated list of <feature> entries. \ 23*4882a593SmuzhiyunEach entry is added to OVERRIDES as df-<feature> if <feature> is in DISTRO_FEATURES." 24*4882a593Smuzhiyun 25*4882a593SmuzhiyunDISTRO_FEATURES_FILTER_NATIVE:append = " ${DISTRO_FEATURES_OVERRIDES}" 26*4882a593SmuzhiyunDISTRO_FEATURES_FILTER_NATIVESDK:append = " ${DISTRO_FEATURES_OVERRIDES}" 27*4882a593Smuzhiyun 28*4882a593Smuzhiyun# If DISTRO_FEATURES_OVERRIDES or DISTRO_FEATURES show up in a task 29*4882a593Smuzhiyun# signature because of this line, then the task dependency on 30*4882a593Smuzhiyun# OVERRIDES itself should be fixed. Excluding these two variables 31*4882a593Smuzhiyun# with DISTROOVERRIDES[vardepsexclude] would just work around the problem. 32*4882a593SmuzhiyunDISTROOVERRIDES .= "${@ ''.join([':df-' + x for x in sorted(set(d.getVar('DISTRO_FEATURES_OVERRIDES').split()) & set((d.getVar('DISTRO_FEATURES') or '').split()))]) }" 33