[meta-python][jethro][PATCH][V2] python-m2crypto: fix SSLv2 symbol issue

[Armin Kuster <akuster808@gmail.com>]

From: Armin Kuster <akuster@mvista.com>

missed using "-D"  for OPENSSL_NO_SSL2 swig_features.

ERROR: Failed to import the "M2Crypto" module: .../usr/lib/python2.7/site-packages/M2Crypto/__m2crypto.so: undefined symbol: SSLv2_method

disable using SSLv2_method if not supported in openssl. This is now the case
with the advent of CVE-2016-0800

Signed-off-by: Armin Kuster <akuster@mvista.com>
---
 ...y_build_with_SSLv2_when_it_is_not_available.patch | 20 ++++++++++++++++++++
 .../python/python-m2crypto_0.21.1.bb                 |  4 +++-
 2 files changed, 23 insertions(+), 1 deletion(-)
 create mode 100644 meta-python/recipes-devtools/python/python-m2crypto/dont_try_build_with_SSLv2_when_it_is_not_available.patch

diff --git a/meta-python/recipes-devtools/python/python-m2crypto/dont_try_build_with_SSLv2_when_it_is_not_available.patch b/meta-python/recipes-devtools/python/python-m2crypto/dont_try_build_with_SSLv2_when_it_is_not_available.patch
new file mode 100644
index 0000000..526c23f
--- /dev/null
+++ b/meta-python/recipes-devtools/python/python-m2crypto/dont_try_build_with_SSLv2_when_it_is_not_available.patch
@@ -0,0 +1,20 @@
+Upstream-Status: Backport
+https://gitlab.com/m2crypto/m2crypto/commit/ac01b38302474920288c1a9eb63fd35fa8d1db5b
+
+Signed-off-by: Armin Kuster <akuster@mvista.com>
+
+Index: M2Crypto-0.21.1/SWIG/_ssl.i
+===================================================================
+--- M2Crypto-0.21.1.orig/SWIG/_ssl.i
++++ M2Crypto-0.21.1/SWIG/_ssl.i
+@@ -48,8 +48,10 @@ extern const char *SSL_alert_desc_string
+ %rename(ssl_get_alert_desc_v) SSL_alert_desc_string_long;
+ extern const char *SSL_alert_desc_string_long(int);
+ 
++#ifndef OPENSSL_NO_SSL2
+ %rename(sslv2_method) SSLv2_method;
+ extern SSL_METHOD *SSLv2_method(void);
++#endif
+ %rename(sslv3_method) SSLv3_method;
+ extern SSL_METHOD *SSLv3_method(void);
+ %rename(sslv23_method) SSLv23_method;
diff --git a/meta-python/recipes-devtools/python/python-m2crypto_0.21.1.bb b/meta-python/recipes-devtools/python/python-m2crypto_0.21.1.bb
index ff6203f..9daea5e 100644
--- a/meta-python/recipes-devtools/python/python-m2crypto_0.21.1.bb
+++ b/meta-python/recipes-devtools/python/python-m2crypto_0.21.1.bb
@@ -8,7 +8,8 @@ LIC_FILES_CHKSUM = "file://LICENCE;md5=b0e1f0b7d0ce8a62c18b1287b991800e"
 
 SRC_URI = "http://pypi.python.org/packages/source/M/M2Crypto/M2Crypto-${PV}.tar.gz \
            file://0001-setup.py-link-in-sysroot-not-in-host-directories.patch \
-           file://0001-M2Crypto-Error-fix.patch"
+           file://0001-M2Crypto-Error-fix.patch \
+           file://dont_try_build_with_SSLv2_when_it_is_not_available.patch"
 
 SRC_URI[md5sum] = "f93d8462ff7646397a9f77a2fe602d17"
 SRC_URI[sha256sum] = "25b94498505c2d800ee465db0cc1aff097b1615adc3ac042a1c85ceca264fc0a"
@@ -19,6 +20,7 @@ inherit setuptools
 
 SWIG_FEATURES_x86-64 = "-D__x86_64__"
 SWIG_FEATURES ?= ""
+SWIG_FEATURES += "-DOPENSSL_NO_SSL2"
 export SWIG_FEATURES
 
 # Get around a problem with swig, but only if the
-- 
2.3.5