classes/cpan-base: fix signatures changing when perl is in sysroot

The previous fix for this same issue (OE-Core rev
f31f6a70ec24e8c9515d69c5092e15effc5e7d4d) was not sufficient - we are
setting the PERLVERSION variable from the get_perl_version function, but
we're setting it using immediate expansion; thus the value is going into
the signature and is still different between the time the recipe is
cached on an empty TMPDIR and after perl is in the sysroot and we run
bitbake -S perf. We could remove the immediate expansion, but that would
mean the get_perl_version function would be called more often, so just set
vardepvalue on the PERLVERSION variable to fix the problem instead.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>

diff --git a/meta/classes/cpan-base.bbclass b/meta/classes/cpan-base.bbclass
index aa502d5faac1fd65cf62a8c70a202a6e88fbd651..d9817ba6b6b6d0b5db4fb6011dad22ae8a86349c 100644 (file)
--- a/meta/classes/cpan-base.bbclass
+++ b/meta/classes/cpan-base.bbclass
@@ -44,6 +44,7 @@ def is_target(d):
 
 PERLLIBDIRS := "${@perl_get_libdirs(d)}"
 PERLVERSION := "${@get_perl_version(d)}"
+PERLVERSION[vardepvalue] = ""
 
 FILES_${PN}-dbg += "${PERLLIBDIRS}/auto/*/.debug \
                     ${PERLLIBDIRS}/auto/*/*/.debug \