Display git commit in version

CMakeLists.txt

@@ -394,6 +394,8 @@ if (WIN32 AND (CMAKE_BUILD_TYPE STREQUAL "Release"))
 	add_definitions(-DNDEBUG)
 endif()
 
+include(cmake/git.cmake)
+
 add_executable(${CMAKE_PROJECT_NAME} ${HEADERS} ${SOURCES})
 
 if (STATIC_BINARY OR STATIC_LIBS)

cmake/git.cmake

@@ -0,0 +1,29 @@
+set(GIT_COMMIT "unknown")
+
+find_program(GIT_EXECUTABLE git)
+
+if (GIT_EXECUTABLE)
+	execute_process(COMMAND "${GIT_EXECUTABLE}" rev-parse --short=7 HEAD
+		WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
+		RESULT_VARIABLE RET
+		OUTPUT_VARIABLE COMMIT
+		OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+	if (RET EQUAL 0)
+		set(GIT_COMMIT "${COMMIT}")
+
+		execute_process(COMMAND git status --porcelain
+			WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}
+			RESULT_VARIABLE RET
+			OUTPUT_VARIABLE GIT_UNSTAGED
+			OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+		if(GIT_UNSTAGED OR RET)
+			set(GIT_COMMIT "${GIT_COMMIT} (dirty)")
+		endif()
+	endif()
+endif()
+
+message(STATUS "You are currently on commit ${GIT_COMMIT}")
+
+add_compile_definitions(GIT_COMMIT="${GIT_COMMIT}")

src/util.cpp

@@ -74,6 +74,9 @@ const char* VERSION = "v" STR2(P2POOL_VERSION_MAJOR) "." STR2(P2POOL_VERSION_MIN
 #elif defined(_MSC_VER)
 	" with MSVC/" STR2(_MSC_VER)
 #endif
+#ifdef GIT_COMMIT
+" from " GIT_COMMIT
+#endif
 " on " __DATE__ ")";
 
 std::string p2pool_version()