[CMake] CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT returns false when expected true

[John Drescher]

On Mon, Dec 14, 2009 at 12:26 PM, Tyler Roscoe <tyler at cryptio.net> wrote:
> On Mon, Dec 14, 2009 at 12:21:13PM -0500, John Drescher wrote:
>> On Mon, Dec 14, 2009 at 12:16 PM, Tyler Roscoe <tyler at cryptio.net> wrote:
>> > On Mon, Dec 14, 2009 at 12:07:33PM -0500, John Drescher wrote:
>> >> SET (DEFAULT_INSTALL_PATH ${PGM_FILES}/UPMC/${CMAKE_PROJECT_NAME}
>> >> CACHE STRING "Default Install Path")
>> >>
>> >> if (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
>> >>    set (CMAKE_INSTALL_PREFIX ${DEFAULT_INSTALL_PATH} CACHE STRING
>> >> "Install path" FORCE)
>> >>    message("CMAKE_INSTALL_PREFIX Initialized to default setting to "
>> >> ${DEFAULT_INSTALL_PATH})
>> >> else (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
>> >>    message("CMAKE_INSTALL_PREFIX not Initialized to default keeping "
>> >> ${CMAKE_INSTALL_PREFIX})
>> >> endif (CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
>> >>
>> >> ENDIF(WIN32)
>> >>
>> >> The expected value for the QtBasicUtils project is if the user did not
>> >> change CMAKE_INSTALL_PREFIX the path should be
>> >> C:/Program Files (x86)/UPMC/QtBasicUtils
>> >>
>> >> on 64 bit systems or
>> >>
>> >> C:/Program Files/UPMC/QtBasicUtils
>> >>
>> >> on 32 bit systems
>> >>
>> >> However this is not getting set and I get the following message in my log:
>> >> CMAKE_INSTALL_PREFIX not Initialized to default keeping C:/Program
>> >> Files (x86)/QtBasicUtils
>> >
>> > Clean out your cache? Looks like your cache has CMAKE_INSTALL_PREFIX set
>> > to 'C:/Program Files (x86)/QtBasicUtils', which is not the default, so
>> > your script is behaving as it should and not clobbering the value.
>> >
>>
>> CMAKE_INSTALL_PREFIX is not in the cache. I thought that was default
>> on 64 bit windows.
>
> Not sure why you think this but that variable always appears in my
> cache. I just tested it with a dummy CMakeLists and a clean build dir.
>
> And if that var is not in the cache, then where is the value 'C:/Program
> Files (x86)/QtBasicUtils' coming from?
>

In this case I just created a new build tree because I am moving the
project to vs2008 instead of vs2005.

Okay this is really weird. I just deleted the cache and started again.

Check for working C compiler: cl
Check for working C compiler: cl -- works
Detecting C compiler ABI info
Detecting C compiler ABI info - done
Check for working CXX compiler: cl
Check for working CXX compiler: cl -- works
Detecting CXX compiler ABI info
Detecting CXX compiler ABI info - done
CMAKE_INSTALL_PREFIX Initialized to default setting to C:/Program
Files (x86)/UPMC/QtBasicUtils
Looking for Q_WS_X11
Looking for Q_WS_X11 - not found.
Looking for Q_WS_WIN
Looking for Q_WS_WIN - found
Looking for Q_WS_QWS
Looking for Q_WS_QWS - not found.
Looking for Q_WS_MAC
Looking for Q_WS_MAC - not found.
Found Qt-Version 4.4.3 (using
X:/32Bit/VC.80/Libraries/qt-win-opensource-src-4.4.3/bin/qmake.exe)
Configuring done

John