[PATCH v3 3/4] ruby: fix non-IPv6 support

["André Draszik" <git@andred.net>]

From: André Draszik <andre.draszik@jci.com>

When IPv6 support is disabled, this recipe mis-configures
ruby so that it end up non-working:
--enable-wide-getaddrinfo instructs ruby to re-implement
the standard getaddinfo(), but IPv6 support is still
automatically detected via ext/socket/extconf.rb
independently of that flag.

To re-implement getaddrinfo(), ruby uses the obsolete
getipnodebyaddr() and getipnodebyname() functions - i.e.
according to the man-page, glibc provided those only in
glibc 2.1.91-95; and of course compilation fails. [1]

Switch to ruby's standard --enable-ipv6= configure
options to make the build work without warnings, and
ruby work at runtime as well.

[1] Compilation and linking actually succeed, albeit with
a warning regarding implicit declaration / unresolved
symbols. The error is only obvious at runtime due to the
unresolved symbols...

Signed-off-by: André Draszik <andre.draszik@jci.com>

---
v3:
* rebased

v2:
* switch to --enable-ipv6/--disable-ipv6 instead of
  --enable-ipv6=yes/no, as the latter is not actually
  recognised
---
 meta/recipes-devtools/ruby/ruby_2.5.5.bb | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/meta/recipes-devtools/ruby/ruby_2.5.5.bb b/meta/recipes-devtools/ruby/ruby_2.5.5.bb
index 341329a6a1..223b0371eb 100644
--- a/meta/recipes-devtools/ruby/ruby_2.5.5.bb
+++ b/meta/recipes-devtools/ruby/ruby_2.5.5.bb
@@ -8,17 +8,12 @@ SRC_URI += " \
 SRC_URI[md5sum] = "7e156fb526b8f4bb1b30a3dd8a7ce400"
 SRC_URI[sha256sum] = "28a945fdf340e6ba04fc890b98648342e3cccfd6d223a48f3810572f11b2514c"
 
-# it's unknown to configure script, but then passed to extconf.rb
-# maybe it's not really needed as we're hardcoding the result with
-# 0001-socket-extconf-hardcode-wide-getaddr-info-test-outco.patch
-UNKNOWN_CONFIGURE_WHITELIST += "--enable-wide-getaddrinfo"
-
 PACKAGECONFIG ??= ""
 PACKAGECONFIG += "${@bb.utils.filter('DISTRO_FEATURES', 'ipv6', d)}"
 
 PACKAGECONFIG[valgrind] = "--with-valgrind=yes, --with-valgrind=no, valgrind"
 PACKAGECONFIG[gmp] = "--with-gmp=yes, --with-gmp=no, gmp"
-PACKAGECONFIG[ipv6] = ",--enable-wide-getaddrinfo,"
+PACKAGECONFIG[ipv6] = "--enable-ipv6, --disable-ipv6,"
 
 EXTRA_AUTORECONF += "--exclude=aclocal"
 
-- 
2.23.0.rc1