[OE-core] [PATCH] cpan-base: Don't use immediate expansion

[Tyler Hall]

PERLVERSION is derived from installed output in the sysroot, so it
should not be evaluated at parse time.

In an new workspace, the sequence

$ bitbake -S libxml-sax-perl
$ bitbake perl
$ bitbake -S libxml-sax-perl

generates different task hashes for libxml-sax-perl, and the error

ERROR: Bitbake's cached basehash does not match the one we just
generated (/bonus/scratch/tylerh/oe-core/meta/recipes-extended/perl/libxml-sax-perl_0.99.bb.do_package)!

Signed-off-by: Tyler Hall <tylerwhall at gmail.com>
---
 meta/classes/cpan-base.bbclass | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/meta/classes/cpan-base.bbclass b/meta/classes/cpan-base.bbclass
index 7e1e8d0..d05863e 100644
--- a/meta/classes/cpan-base.bbclass
+++ b/meta/classes/cpan-base.bbclass
@@ -40,7 +40,7 @@ def is_target(d):
     return "no"
 
 PERLLIBDIRS := "${@perl_get_libdirs(d)}"
-PERLVERSION := "${@get_perl_version(d)}"
+PERLVERSION = "${@get_perl_version(d)}"
 
 FILES_${PN}-dbg += "${PERLLIBDIRS}/auto/*/.debug \
                     ${PERLLIBDIRS}/auto/*/*/.debug \
-- 
1.8.3.4