qca-ossl: Fix build without support for SHA-0 
https://quickgit.kde.org/?p=qca.git&a=commit&h=0dbed8eb38afd1561907a52283091c37e7b85156

LibreSSL >= 2.3.0 removed support for SHA-0, so there's no EVP_sha 
anymore. 
Wikipedia says about SHA-0: "160-bit hash function published in 1993 
under the name SHA. It was withdrawn shortly after publication due to 
an undisclosed "significant flaw" and replaced by the slightly revised 
version SHA-1.' 

REVIEW: 125387 

--- plugins/qca-ossl/CMakeLists.txt.orig
+++ plugins/qca-ossl/CMakeLists.txt
@@ -24,6 +24,13 @@
   else(HAVE_OPENSSL_AES_CTR)
     message(WARNING "qca-ossl will be compiled without AES CTR mode encryption support")
   endif(HAVE_OPENSSL_AES_CTR)
+
+  check_function_exists(EVP_sha HAVE_OPENSSL_SHA0)
+  if(HAVE_OPENSSL_SHA0)
+    add_definitions(-DHAVE_OPENSSL_SHA0)
+  else(HAVE_OPENSSL_SHA0)
+    message(WARNING "qca-ossl will be compiled without SHA-0 digest algorithm support")
+  endif(HAVE_OPENSSL_SHA0)
 
   set(QCA_OSSL_SOURCES qca-ossl.cpp)