poky/meta/classes/perl-version.bbclass

PERL_OWN_DIR = "${@["", "/perl-native"][(bb.data.inherits_class('native', d))]}"

# Determine the staged version of perl from the perl configuration file
# Assign vardepvalue, because otherwise signature is changed before and after
# perl is built (from None to real version in config.sh).
get_perl_version[vardepvalue] = "${PERL_OWN_DIR}"
def get_perl_version(d):
    import re
    cfg = d.expand('${STAGING_LIBDIR}${PERL_OWN_DIR}/perl/config.sh')
    try:
        f = open(cfg, 'r')
    except IOError:
        return None
    l = f.readlines();
    f.close();
    r = re.compile(r"^version='(\d*\.\d*\.\d*)'")
    for s in l:
        m = r.match(s)
        if m:
            return m.group(1)
    return None

PERLVERSION := "${@get_perl_version(d)}"
PERLVERSION[vardepvalue] = ""