[PATCH] meta/conf/bitbake.conf: enable SRCPV support for AUTOREV

[Srinuvasan Arjunan <srinuvasan_a@mentor.com>]

From: Srinuvasan A <srinuvasan_a@mentor.com>

One of our downstream project recipe uses `SRCREV = "${AUTOREV}"` to get
the latest changes always, but this not works after bitbake 2 migration,
it throws the below error.

do_fetch: Fetcher failure: Recipe uses a floating tag/branch without a fixed SRCREV yet doesn't call bb.fetch2.get_srcrev() (use SRCPV in PV for OE).

Till now we don't have support for SRCPV in ISAR, hence add this support
as like OE.

Signed-off-by: Srinuvasan A <srinuvasan_a@mentor.com>
---
 meta/classes/base.bbclass | 4 ++++
 meta/conf/bitbake.conf    | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/meta/classes/base.bbclass b/meta/classes/base.bbclass
index 53550ae..819f8a2 100644
--- a/meta/classes/base.bbclass
+++ b/meta/classes/base.bbclass
@@ -120,6 +120,10 @@ root_cleandirs() {
 python() {
     import re
 
+    srcuri = d.getVar('SRC_URI')
+    if srcuri:
+        d.setVar("SRCPV", "${@bb.fetch2.get_srcrev(d)}")
+
     for e in d.keys():
         flags = d.getVarFlags(e)
         if flags and flags.get('task'):
diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index f421050..124bf49 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -36,6 +36,10 @@ PR = "${@bb.parse.vars_from_file(d.getVar('FILE', False),d)[2] or 'r0'}"
 PROVIDES = ""
 S = "${WORKDIR}/${P}"
 AUTOREV = "${@bb.fetch2.get_autorev(d)}"
+AUTOREV[vardepvalue] = "${SRCPV}"
+# Set Dynamically in base.bbclass
+# SRCPV = "${@bb.fetch2.get_srcrev(d)}"
+SRCPV[vardepvalue] = "${SRCPV}"
 SRC_URI = ""
 STAMPS_DIR ?= "${TMPDIR}/stamps"
 STAMP = "${STAMPS_DIR}/${DISTRO}-${DISTRO_ARCH}/${PN}/${PV}-${PR}"
-- 
2.34.1