Re: [CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
>> There are lots of questions on this CMake variable and the consensus is DO >> NOT USE IT. PERIOD. The implementation is basically broken for all but the >> most trivial case. > >I can tell you one thing. If the original idea of this was an attempt >to create a CMake free build that will not work. These comments agree with the way my software group has used CMake on a daily basis for the past 6 or 7 years (or more?). For our project, with a couple thousand source code files in a few dozen directories, it only takes a minute for CMake to generate our VC++ project files, and we make heavy use of out-of-source builds and different relative paths to source code files, all of which says you'd be crazy to rely on relative paths in the project files. Every once in a while, though, we get some pushback from our parent group, for whom my software project is just one subcomponent of a larger system. For example, today a very influential member of the larger team complained that he can't attach a debugger to our project on one of the test machines because we don't use relative paths in our project files (unlike "everyone else"). Supposedly he can take the source code directory of any other subsystem (including all its VCPROJ files with their relative paths to everything), drop it onto an arbitrary directory on the test machine, open up VC++ and attach the debugger to a running executable of that subsystem. I don't know if relative paths would even work in our case, but it would be very helpful if I could just twiddle some setting in my top-level CMakeLists.txt, produce a version of the project files with all relative paths, and either solve this guy's problem or show him that relative paths aren't the answer after all. NOT having the ability (or at least know-how) to generate projects with relative paths, I leave someone with an unsolved problem that seems to be my fault (because my group keeps on using CMake) and increases the risk that I'll eventually be forced to go back to using individually-crafted VCPROJ files for everything, which IMHO would be a huge step backward in my development process. As a result, even though it's been years since I've even THOUGHT about using relative paths, I'm temporarily setting CMAKE_USE_RELATIVE_PATHS in a copy of my source tree to see what happens. So far, though, it doesn't seem to help much. The paths to libraries that are given by relative paths in CMakeLists.txt seem to stay relative paths rather than being converted to absolute, but all the source files are still identified by absolute paths regardless. David ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
Hi Micheal, I know the discusion about CMAKE_USE_RELATIVE_PATHS, for all my test under cygwin and MAC-OX with gmake and gcc, it works! Only the setting is a little tricky ;-) There are good reasons to use this option, at leased the shorter log files. Claus Michael Jackson schrieb: There are lots of questions on this CMake variable and the consensus is DO NOT USE IT. PERIOD. The implementation is basically broken for all but the most trivial case. _ Mike Jackson mike.jack...@bluequartz.net BlueQuartz Softwarewww.bluequartz.net Principal Software Engineer Dayton, Ohio On Dec 21, 2009, at 3:59 PM, John Drescher wrote: On Mon, Dec 21, 2009 at 3:50 PM, Claus Klein 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? ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
Hi Aashish, yes the set command is well explained. Thanks. But for some CMAKE variables this not true! I guess that GUI vars have always set with FORCE? Claus Aashish Chaudhary schrieb: Is this useful? http://www.cmake.org/cmake/help/cmake-2-8-docs.html#command:set ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
John Drescher schrieb:
On Mon, Dec 21, 2009 at 3:50 PM, Claus Klein 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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Re: [CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
> There are lots of questions on this CMake variable and the consensus is DO > NOT USE IT. PERIOD. The implementation is basically broken for all but the > most trivial case. > I can tell you one thing. If the original idea of this was an attempt to create a CMake free build that will not work. John ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
Re: [CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
There are lots of questions on this CMake variable and the consensus
is DO NOT USE IT. PERIOD. The implementation is basically broken for
all but the most trivial case.
_
Mike Jackson mike.jack...@bluequartz.net
BlueQuartz Softwarewww.bluequartz.net
Principal Software Engineer Dayton, Ohio
On Dec 21, 2009, at 3:59 PM, John Drescher wrote:
On Mon, Dec 21, 2009 at 3:50 PM, Claus Klein
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
___
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Re: [CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
On Mon, Dec 21, 2009 at 3:50 PM, Claus Klein 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
___
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[CMake] what is the right way to set CMAKE_USE_RELATIVE_PATHS?
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? What goes wrong? Which is the right way do set CMAKE_BUILD_TYPE and CMAKE_USE_RELATIVE_PATHS? //regards Claus ___ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Follow this link to subscribe/unsubscribe: http://www.cmake.org/mailman/listinfo/cmake
