[CMake] is ccmake reliable?

[John Drescher]

> So assuming that I wanted my CMakeLists.txt file to modify the default
> install location, but allow the user to change this, wouldn't I do something
> like:
>>
>> set( CMAKE_INSTALL_PREFIX
>>  ${CMAKE_CURRENT_BINARY_DIR}
>>  CACHE PATH "installation path"
>>  )
>
> This doesn't work - I assume that this is because CMAKE_INSTALL_PREFIX is a
> special (internally defined) variable?  When I run ccmake and configure, the
> value remains as /usr/local.

Here is what I do in my cuurent project:

IF(WIN32)

	#The following command changes \ to / in the Program Files Path so
CMake will not complain
	#about bad escape sequences.
	IF(CMAKE_SIZEOF_VOID_P MATCHES 4)
	string (REPLACE "\\" "/" PGM_FILES $ENV{PROGRAMFILES})
	ELSE(CMAKE_SIZEOF_VOID_P MATCHES 4)
	# On WIN64 use the 64 bit program files..
	string (REPLACE "\\" "/" PGM_FILES $ENV{ProgramW6432})
	ENDIF(CMAKE_SIZEOF_VOID_P MATCHES 4)

	SET (CMAKE_INSTALL_PREFIX ${PGM_FILES}/UPMC/${CMAKE_PROJECT_NAME}
CACHE STRING "Default Install Path" FORCE)

	configure_file (
		"${PROJECT_SOURCE_DIR}/install.bat.in"
		"${PROJECT_BINARY_DIR}/Batch/install.bat"
	)

ENDIF(WIN32)

John