Check added whether any modules were found and whether all modules we
depend on are found.

Fixes Flyspray 195

[[Imported from SVN: r4787]]

bin/duneproject

@@ -25,6 +25,29 @@ canonicalpath(){
   (cd $(dirname $(canonicalname $1)) && pwd)
 }
 
+modulesexist(){
+  allfound=0
+
+  for dep in $1; do
+      found=0
+      for module in $2; do
+	  if [ "$dep" = "$module" ]; then
+	      found=1
+	      break
+	  fi
+      done
+      if [ "$found" = "0" ]; then
+	  echo "ERROR:">/dev/stderr
+	  echo "Module with name $dep was not found" > /dev/stderr
+	  echo "Did you forget to specify it's location" > /dev/stderr
+	  echo "in the DUNE_CONTROL_PATH variable?"> /dev/stderr
+	  echo >/dev/stderr
+	  allfound=1
+      fi
+  done
+  return $allfound
+}
+
 echo
 echo == Dune project/module generator ==
 echo
@@ -42,6 +65,15 @@ if [ "$MODULES" = "" ]; then
   find_modules_in_path
 fi
 
+if [ "$MODULES" = "" ]; then
+  echo "ERROR">/dev/stderr
+  echo "No dune modules were found!">/dev/stderr
+  echo "Did you forget to specify the places where ">/dev/stderr
+  echo "you installed your modules in the ">/dev/stderr
+  echo "DUNE_CONTROL_PATH environment variable?" >/dev/stderr
+  exit 1;
+fi
+
 # get the real module names
 SRC_MODULES=""
 for i in $MODULES; do
@@ -70,13 +102,22 @@ while [ "$DATACORRECT" != "y" -a "$DATACORRECT" != "Y" ]; do
   done
   MODULE="$PROJECT"
 
+  DEP_OK=1
+
+  while [ "$DEPOK" != 0 ]; do
   DEPENDENCIES=""
   echo "2) Which modules should this module depend on?"
   echo "   Following modules are found:"
-  for i in $ALL_MODULES; do echo "      $i"; done
+  for i in $ALL_MODULES; do echo -n " $i"; done
+  echo ""
   while [ -z "$DEPENDENCIES" ]; do
       read -p "  Enter space separated list: " DEPENDENCIES
   done
+  set +e
+  modulesexist "$DEPENDENCIES" "$ALL_MODULES"
+  DEPOK=$?
+  set -e
+  done
 
   VERSION=""
   while [ -z $VERSION ]; do