Improved build.sh

build.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-if [ ! $# -eq 2 ]
+if [ ! $# -eq 2 ] #FIXME:normal way of chceking whether -n argument used
  then
   echo "╔╦╗╔╦╗╔═╗╔═╗╔═╗╦═╗"
   echo " ║║ ║║║ ║╚═╗║╣ ╠╦╝"
@@ -11,6 +11,12 @@ if [ $# -eq 0 ]
     echo -n "Usage:"
     echo -n $0
     echo " [-h] [debug|release|clean|update] [-n]"
+    echo " -h - display this message"
+    echo " -n - do not display logo"
+    echo " debug - build for debug(no optimization)"
+    echo " release - build for release(maximum optimization)"
+    echo " clean - delete old build"
+    echo " update - try automatically download new version and build it for release"
     exit -1
 fi
 
@@ -19,7 +25,13 @@ if [ $1 == "-h" ]
   echo -n "Usage:"
   echo -n $0
   echo " [-h] [debug|release|clean|update] [-n]"
-  exit -1
+  echo " -h - display this message"
+  echo " -n - do not display logo"
+  echo " debug - build for debug(no optimization)"
+  echo " release - build for release(maximum optimization)"
+  echo " clean - delete old build"
+  echo " update - try automatically download new version and build it for release"
+  exit 0
 fi
 
 if [ $1 = "clean" ]
@@ -53,6 +65,17 @@ if [ $1 = "update" ]
  then
   echo "Updating..."
   git pull
+  if [ $? != 0 ]
+   then
+    echo "+----------------|ERROR!!!|----------------+"
+    echo "|git pull failed!                          |"
+    echo "|It seems that you need to update manually |"
+    echo "|To update manually clone repository again |"
+    echo "|(using git clone) and build (using this   |"
+    echo "|script)                                   |"
+    echo "+------------------------------------------+"
+    exit -1
+  fi
   ./$0 clean -n
   ./$0 release -n
   exit