фича: автообновление сессии

CMakeLists.txt

@@ -25,7 +25,26 @@ else()
     message(FATAL_ERROR "You must set `MODEM_TYPE` \"SCPC\" or \"TDMA\"!")
 endif()
 
-add_compile_options(-Wall -Wextra -Wsign-conversion)
+SET(PROJECT_GIT_REVISION "0")
+FIND_PACKAGE(Git)
+IF (GIT_FOUND)
+    EXECUTE_PROCESS (
+            COMMAND ${GIT_EXECUTABLE} rev-parse HEAD
+            WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}
+            OUTPUT_VARIABLE GIT_HEAD
+            #        ERROR_VARIABLE ERROR_RESULT
+            #        RESULT_VARIABLE INFO_RESULT
+            ERROR_QUIET
+            OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
+
+    IF ( ${GIT_HEAD} MATCHES "^.+$" )
+        STRING ( SUBSTRING ${GIT_HEAD} 0 8 VERSION_REVISION )
+        SET ( PROJECT_GIT_REVISION ${VERSION_REVISION} )
+    ENDIF()
+ENDIF()
+
+add_compile_options(-Wall -Wextra -Wsign-conversion -DPROJECT_GIT_REVISION="${PROJECT_GIT_REVISION}")
 
 # максимальный размер тела запроса 200mb
 add_definitions(-DHTTP_MAX_PAYLOAD=200000000)