Add BUILD_ID and GIT_VER

Makefile

@@ -1,6 +1,8 @@
 CC = $(CROSS)$(TARGET)gcc
 STRIP = $(CROSS)$(TARGET)strip
-CFLAGS = -ggdb -Wall -Wextra -Wshadow -Wformat-security -Wno-strict-aliasing -O2 -D_GNU_SOURCE
+BUILD_ID = $(shell date +%F_%R)
+GIT_VER = $(shell git describe --tags --dirty --always)
+CFLAGS = -ggdb -Wall -Wextra -Wshadow -Wformat-security -Wno-strict-aliasing -O2 -D_GNU_SOURCE -DBUILD_ID=\"$(BUILD_ID)\" -DGIT_VER=\"$(GIT_VER)\"
 RM = /bin/rm -f
 Q = @
 

tsdecrypt.c

@@ -23,7 +23,7 @@ static void LOG_func(const char *msg) {
 }
 
 static void show_help(struct ts *ts) {
-	printf("tsdecrypt v1.0\n");
+	printf("tsdecrypt v1.0 (git %s) (build date %s)\n", GIT_VER, BUILD_ID);
 	printf("Copyright (c) 2011 Unix Solutions Ltd.\n");
 	printf("\n");
 	printf("	Usage: tsdecrypt [opts]\n");