Review configure setup

.gitignore

@@ -1,3 +1,4 @@
+*-build*
 build*
 *_build
 /install

configure

@@ -1,6 +1,7 @@
 #!/bin/bash
 
 # Default options
+
 BUILD_DIR="build"
 CMAKE_GENERATOR="Unix Makefiles"
 BUILD_TYPE="Release"
@@ -99,8 +100,18 @@ do
     fi
 done
 
+if [ "$CMAKE_GENERATOR_OVERRIDE" != "" ]
+then
+  echo "Override CMAKE_GENERATOR to $CMAKE_GENERATOR_OVERRIDE"
+  CMAKE_GENERATOR="$CMAKE_GENERATOR_OVERRIDE"
+fi
+
+if [ -n "$BUILD_DIR_PREFIX" ]; then
+  BUILD_DIR="${BUILD_DIR_PREFIX}-${BUILD_DIR}"
+fi
+
 # Configure build
-echo "Configuring ..."
+echo "Configuring in \"$BUILD_DIR\""
 echo ""
 
 # Create build directory
@@ -110,8 +121,11 @@ then
 fi
 
 # Configure project
+
 PREVIOUS_DIR=$(pwd)
-cd $BUILD_DIR
+
+pushd $BUILD_DIR
+echo cmake -G "$CMAKE_GENERATOR" "-DCMAKE_BUILD_TYPE=$BUILD_TYPE" $CMAKE_OPTIONS "$PREVIOUS_DIR"
 cmake -G "$CMAKE_GENERATOR" "-DCMAKE_BUILD_TYPE=$BUILD_TYPE" $CMAKE_OPTIONS "$PREVIOUS_DIR"
 if [ $? == 0 ]
 then
@@ -123,5 +137,4 @@ else
     echo ""
     echo "Configuration failed.";
 fi
-
-cd "$PREVIOUS_DIR"
+popd