Merge pull request #443 from industriousonesoft/master

MacOS: prefer the specified openssl root folder over the system version

CMakeLists.txt

@@ -283,6 +283,14 @@ if (USE_GNUTLS)
 	target_link_libraries(datachannel PRIVATE GnuTLS::GnuTLS)
 	target_link_libraries(datachannel-static PRIVATE GnuTLS::GnuTLS)
 else()
+	if(APPLE)
+		# This is a bug in CMake that causes it to prefer the system version over 
+		# the one in the specified ROOT folder
+		if(EXISTS ${OPENSSL_ROOT_DIR})
+			set(OPENSSL_CRYPTO_LIBRARY "${OPENSSL_ROOT_DIR}/lib/libcrypto.dylib" CACHE FILEPATH "" FORCE)
+			set(OPENSSL_SSL_LIBRARY "${OPENSSL_ROOT_DIR}/lib/libssl.dylib" CACHE FILEPATH "" FORCE)
+		endif()
+	endif()
 	find_package(OpenSSL REQUIRED)
 	target_compile_definitions(datachannel PRIVATE USE_GNUTLS=0)
 	target_compile_definitions(datachannel-static PRIVATE USE_GNUTLS=0)