thirdparty/paho.mqtt.c/paho.mqtt.c.patch

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0ce3649..3981b6b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,7 +23,7 @@ MESSAGE(STATUS "CMake version: " ${CMAKE_VERSION})
 MESSAGE(STATUS "CMake system name: " ${CMAKE_SYSTEM_NAME})
 
 SET(CMAKE_SCRIPTS "${CMAKE_SOURCE_DIR}/cmake")
-SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules")
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/modules")
 
 ## build settings
 SET(PAHO_VERSION_MAJOR 1)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c57185b..3d0c2c7 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -101,27 +101,12 @@ INSTALL(FILES MQTTAsync.h MQTTClient.h MQTTClientPersistence.h
     DESTINATION ${CMAKE_INSTALL_INCLUDEDIR})
 
 IF (PAHO_WITH_SSL)
-    SET(OPENSSL_SEARCH_PATH "" CACHE PATH "Directory containing OpenSSL libraries and includes")
+    FIND_PACKAGE(OpenSSL REQUIRED)
 
-    IF (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
-      SET(OPENSSL_SEARCH_PATH "/usr/local/opt/openssl")
-    ENDIF (${CMAKE_SYSTEM_NAME} STREQUAL "Darwin")
-
-    IF (WIN32)
-      SET(OPENSSL_SEARCH_PATH "C:/OpenSSL-Win64")
-    ENDIF ()
-
-    FIND_PATH(OPENSSL_INCLUDE_DIR openssl/ssl.h
-        HINTS ${OPENSSL_SEARCH_PATH}/include)
-    FIND_LIBRARY(OPENSSL_LIB NAMES ssl libssl ssleay32
-        HINTS ${OPENSSL_SEARCH_PATH}/lib ${OPENSSL_SEARCH_PATH}/lib64)
-    FIND_LIBRARY(OPENSSLCRYPTO_LIB NAMES crypto libcrypto libeay32
-      	HINTS ${OPENSSL_SEARCH_PATH}/lib ${OPENSSL_SEARCH_PATH}/lib64)
-
-    MESSAGE(STATUS "OpenSSL hints: ${OPENSSL_SEARCH_PATH}")
     MESSAGE(STATUS "OpenSSL headers found at ${OPENSSL_INCLUDE_DIR}")
-    MESSAGE(STATUS "OpenSSL library found at ${OPENSSL_LIB}")
-    MESSAGE(STATUS "OpenSSL Crypto library found at ${OPENSSLCRYPTO_LIB}")
+    MESSAGE(STATUS "OpenSSL libraries found at ${OPENSSL_LIBRARIES}")
+    MESSAGE(STATUS "OpenSSL SSL library found at ${OPENSSL_SSL_LIBRARY}")
+    MESSAGE(STATUS "OpenSSL Crypto library found at ${OPENSSL_CRYPTO_LIBRARY}")
 
     INCLUDE_DIRECTORIES(
         ${OPENSSL_INCLUDE_DIR}
@@ -135,8 +120,8 @@ IF (PAHO_WITH_SSL)
     ADD_LIBRARY(paho-mqtt3cs SHARED $<TARGET_OBJECTS:common_ssl_obj> MQTTClient.c SSLSocket.c)
     ADD_LIBRARY(paho-mqtt3as SHARED $<TARGET_OBJECTS:common_ssl_obj> MQTTAsync.c SSLSocket.c)
 
-    TARGET_LINK_LIBRARIES(paho-mqtt3cs ${OPENSSL_LIB} ${OPENSSLCRYPTO_LIB} ${LIBS_SYSTEM})
-    TARGET_LINK_LIBRARIES(paho-mqtt3as ${OPENSSL_LIB} ${OPENSSLCRYPTO_LIB} ${LIBS_SYSTEM})
+    TARGET_LINK_LIBRARIES(paho-mqtt3cs ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY} ${LIBS_SYSTEM})
+    TARGET_LINK_LIBRARIES(paho-mqtt3as ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY} ${LIBS_SYSTEM})
     SET_TARGET_PROPERTIES(
         paho-mqtt3cs paho-mqtt3as PROPERTIES
         VERSION ${CLIENT_VERSION}