Fix CMake cross compile builds not finding opensslconf.h.

Closes #2160. Thanks to Ozaq.

ChangeLog.txt

@@ -13,6 +13,7 @@ Clients:
 Build:
 - A variety of minor build related fixes, like functions not having previous
   declarations.
+- Fix CMake cross compile builds not finding opensslconf.h. Closes #2160.
 
 
 2.0.9 - 2021-03-11

plugins/auth-by-ip/CMakeLists.txt

@@ -1,5 +1,5 @@
 include_directories(${mosquitto_SOURCE_DIR} ${mosquitto_SOURCE_DIR}/include
-			${STDBOOL_H_PATH} ${STDINT_H_PATH})
+			${OPENSSL_INCLUDE_DIR} ${STDBOOL_H_PATH} ${STDINT_H_PATH})
 
 add_library(mosquitto_auth_by_ip SHARED mosquitto_auth_by_ip.c)
 set_target_properties(mosquitto_auth_by_ip PROPERTIES

plugins/message-timestamp/CMakeLists.txt

@@ -1,5 +1,5 @@
 include_directories(${mosquitto_SOURCE_DIR} ${mosquitto_SOURCE_DIR}/include
-			${STDBOOL_H_PATH} ${STDINT_H_PATH})
+			${OPENSSL_INCLUDE_DIR} ${STDBOOL_H_PATH} ${STDINT_H_PATH})
 
 add_library(mosquitto_message_timestamp SHARED mosquitto_message_timestamp.c)
 set_target_properties(mosquitto_message_timestamp PROPERTIES

plugins/payload-modification/CMakeLists.txt

@@ -1,5 +1,5 @@
 include_directories(${mosquitto_SOURCE_DIR} ${mosquitto_SOURCE_DIR}/include
-			${STDBOOL_H_PATH} ${STDINT_H_PATH})
+			${OPENSSL_INCLUDE_DIR} ${STDBOOL_H_PATH} ${STDINT_H_PATH})
 link_directories(${mosquitto_SOURCE_DIR})
 
 add_library(mosquitto_payload_modification SHARED mosquitto_payload_modification.c)