diff --git a/bash/smake/etc/smake/help.smk b/bash/smake/etc/smake/help.smk
new file mode 100644
index 0000000..307c772
--- /dev/null
+++ b/bash/smake/etc/smake/help.smk
@@ -0,0 +1,9 @@
+# This file is generated with smake.sh.
+# You can use this make file with instruction make to
+# use one of build mode: debug, profile, develop, release.
+# No need to call make clean if You make with other mode,
+# because the Makefile containes rules for automatically clean.
+# Some usage examples:
+# CFLAGS="-march=core2 -mtune=core2" make
+# LDFLAGS="-lexpat" make mode=profile
+# Report bugs to <mecareful@gmail.com>
diff --git a/bash/smake/smake.sh b/bash/smake/smake.sh
index 2a33cc5..fa15b7d 100755
--- a/bash/smake/smake.sh
+++ b/bash/smake/smake.sh
@@ -7,6 +7,7 @@ REP_LIBRARIES=
 REP_TARGET=target
 
 SMAKE_DIR=~/dev/bash/smake/etc/smake
+HELP_FILE=$SMAKE_DIR/help.smk
 ENV_FILE=$SMAKE_DIR/env.smk
 BUILD_FILE=$SMAKE_DIR/build.smk
 RULES_FILE=$SMAKE_DIR/rules.smk
@@ -43,9 +44,13 @@ while true ; do
 	esac
 done
 
+# ======= Help =======
+cat $HELP_FILE > Makefile
+echo >> Makefile
+
 # ======= Environment =======
 sed "s~REP_CC~$REP_CC~ ; s~REP_CXX~$REP_CXX~ ; \
-     s~REP_LIBRARIES~$REP_LIBRARIES~ ; s~REP_TARGET~$REP_TARGET~" $ENV_FILE > Makefile
+     s~REP_LIBRARIES~$REP_LIBRARIES~ ; s~REP_TARGET~$REP_TARGET~" $ENV_FILE >> Makefile
 
 # INCLUDE0, INCLUDE1, INCLUDE2, ...
 REP_INCLUDE=`echo $REP_INCLUDE | sed "s~-I~~g"`