[CMake] problem setting CMAKE_BUILD_TYPE and CMAKE_INSTALL_PREFIX

[Yogesh Marwaha]

Hi

I am having problem setting values for CMAKE_BUILD_TYPE and CMAKE_INSTALL_PREFIX

Here is CMakeLists.txt in project root directory
==================================
project (eSpy)
cmake_minimum_required (VERSION 2.4.0)
set (CMAKE_BUILD_TYPE Release)
set (CMAKE_INSTALL_PREFIX "/usr")
find_package (Qt4 REQUIRED)
add_subdirectory (eSpy)
add_subdirectory (eSpyDLin)

Here is CMakeLists.txt in eSpy directory
==============================
include (${QT_USE_FILE})
set (eSpy_SRCS
    currentusage.cpp
    detailedusage.cpp
    kbandwidthmanager.cpp
    sqliteengine.cpp
    sqlite3.c
    sdailyusage.cpp
    main.cpp
)
set (eSpy_MOCS
    currentusage.h
    sdailyusage.h
    detailedusage.h
    kbandwidthmanager.h
)
set (eSpy_RCCS
    resources.qrc
)

qt4_add_resources (eSpy_RCC_SRCS ${eSpy_RCCS})
qt4_wrap_cpp (eSpy_MOC_SRCS ${eSpy_MOCS})

add_executable (eSpy ${eSpy_SRCS} ${eSpy_RCC_SRCS} ${eSpy_MOC_SRCS})

target_link_libraries (eSpy ${QT_LIBRARIES})

install(TARGETS eSpy DESTINATION bin)
===========================ENDS

After configuring with command
'cmake ..'
project is still compiled with default values of these variables.
Can you suggest what I am doing wrong?

Regards
-- 
Yogesh M