John Drescher schrieb:
On Mon, Dec 21, 2009 at 3:50 PM, Claus Klein <[email protected]> wrote:
Hi all,
I tried to use:
set(CMAKE_USE_RELATIVE_PATHS ON)
in my CMakeLists.txt.
But I noticed, that some cmake variables can't be changed in that way.
In the CMakeCache.txt, it is still OFF?
I have no idea about CMAKE_USE_RELATIVE_PATHS since I have never
needed/wanted to use that however for the other cases that it appears
the CMake does not let me change a value I usually get around this
using the following examples:
SET (CMAKE_INSTALL_PREFIX ${PGM_FILES}/UPMC/${CMAKE_PROJECT_NAME}
CACHE STRING "Default Install Path" FORCE)
IF (MAKE_DEBUGRELEASE)
SET (CMAKE_CONFIGURATION_TYPES "Debug;RelWithDebInfo" CACHE STRING
"Debug;RelWithDebInfo" FORCE)
SET (RELEASE_BUILD_NAME "RelWithDebInfo")
ELSE(MAKE_DEBUGRELEASE)
SET (CMAKE_CONFIGURATION_TYPES "Debug;Release" CACHE STRING
"Debug;Release" FORCE)
SET (RELEASE_BUILD_NAME "Release")
ENDIF (MAKE_DEBUGRELEASE)
The keys are CACHE and FORCE.
John
Thanks John,
I know the FORCE option.
But I tried to understand for which CMake variables I have to use FORCE
and why?
Is it really necessary to write so much configuration when I simply want
to change a default value?
For the CMAKE_BUILD_TYPE it is documented, quote from CMake FAQ:
IF(NOT CMAKE_BUILD_TYPE)
SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING
"Choose the type of build, options are: None Debug Release RelWithDebInfo
MinSizeRel."
FORCE)
ENDIF(NOT CMAKE_BUILD_TYPE)
Claus
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