Index: cmake/FindQWT.cmake
===================================================================
--- cmake/FindQWT.cmake	(revision 13881)
+++ cmake/FindQWT.cmake	(working copy)
@@ -17,10 +17,9 @@
 #MESSAGE("Searching for QWT")
 FIND_PATH(QWT_INCLUDE_DIR qwt.h 
   /usr/include
-  /usr/include/qwt-qt4
   /usr/local/include
   "$ENV{LIB_DIR}/include" 
-  "$ENV{LIB_DIR}/include/qwt"
+  PATH_SUFFIXES qwt-qt4 qwt
   )
 FIND_LIBRARY(QWT_LIBRARY qwt PATHS 
   /usr/lib
Index: cmake/FindGRASS.cmake
===================================================================
--- cmake/FindGRASS.cmake	(revision 13881)
+++ cmake/FindGRASS.cmake	(working copy)
@@ -44,7 +44,7 @@
 # search for grass installations
 
 # list of paths which to search - user's choice as first
-SET (GRASS_PATHS ${GRASS_PREFIX} /usr/lib/grass c:/msys/local)
+SET (GRASS_PATHS ${GRASS_PREFIX} /usr/lib/grass c:/msys/local /opt/grass)
 
 # mac-specific path
 IF (APPLE)
Index: src/app/qgisapp.cpp
===================================================================
--- src/app/qgisapp.cpp	(revision 13881)
+++ src/app/qgisapp.cpp	(working copy)
@@ -4931,7 +4931,7 @@
 void QgisApp::loadPythonSupport()
 {
   QString pythonlibName( "qgispython" );
-#ifdef Q_WS_MAC
+#if defined(Q_WS_MAC) || defined(Q_OS_LINUX)
   pythonlibName.prepend( QgsApplication::prefixPath() + "/lib/" );
 #endif
 #ifdef __MINGW32__
Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt	(revision 13881)
+++ CMakeLists.txt	(working copy)
@@ -45,7 +45,8 @@
 # try to configure and build GRASS plugin by default
 SET (WITH_GRASS TRUE CACHE BOOL "Determines whether GRASS plugin should be built")
 IF (WITH_GRASS)
-  SET (GRASS_PREFIX "" CACHE PATH "Path to GRASS base directory")
+  FIND_PACKAGE(GRASS)
+  SET (GRASS_PREFIX ${GRASS_PREFIX} CACHE PATH "Path to GRASS base directory")
 ENDIF (WITH_GRASS)
 
 # try to configure and build POSTGRESQL support
@@ -145,9 +146,6 @@
 IF (WITH_POSTGRESQL)
   FIND_PACKAGE(Postgres) # PostgreSQL provider, SPIT plugin
 ENDIF (WITH_POSTGRESQL)
-IF (WITH_GRASS)
-  FIND_PACKAGE(GRASS)    # GRASS plugin
-ENDIF (WITH_GRASS)
 IF (WITH_QWT)
   FIND_PACKAGE(QWT)
 ENDIF(WITH_QWT)