[Cmake] Pb with Last CVS version of CMake

[Bill Hoffman]

We are working on fixing this problem, thanks for the feedback.
For now, I would suggest that you use CMake 1.4.6 or set the environment
variables CXX and CC before running cmake.    Brad should have a  better
fix for this in a day or so.

-Bill


At 08:03 PM 12/4/2002 -0800, TDeschamps at lbl.gov wrote:
>Hi all,
>
>I still have pbs with the latest version of CMake.
>Here is a piece of my CmakeList.txt file:
>
>---------------------------------------------------------
># ask cmake to find VTK
>INCLUDE(/usr/local/share/CMake/Modules/FindVTK.cmake)
>
>INCLUDE(${VTK_USE_FILE})
>
>SET( CMAKE_CXX_COMPILER ${VTK_CXX_COMPILER} )
>SET( CMAKE_CXX_FLAGS ${VTK_CXX_FLAGS} )
>
>MESSAGE( "The current compiler is " ${CMAKE_CXX_COMPILER} " " 
>${CMAKE_CXX_FLAGS} )
>------------------------------------------------------
>
>And the output is :
>
>> cmake
>-- Looking for connect in socket
>-- Looking for connect in socket - not found
>-- Looking for pthread_create in pthreads
>-- Looking for pthread_create in pthreads - not found
>-- Checking for CXX include file iostream
>-- Checking for CXX include file iostream -- found
>-- Checking for CXX include file sstream
>-- Checking for CXX include file sstream -- found
>CMake Error: The selected VTK was built with "g++", but the current
>compiler is "c++".  Please set CMAKE_CXX_COMPILER to "g++".
>The current compiler is g++ -g -O2 -Wno-deprecated
>-- Configuring done
>
>I do not understand what is wrong since the correct options are
>displayed? Is the order of the calls wrong?
>
>In fact it should try to check conflicts after processing all the
>different macros, and not before...
>Unless the CMakeList.txt will start to look more and more like a classic
>Makefile.
>Running cmake with CXX set to g++ in an empty directory for having the
>correct setting is too much, there is to be another way, isn't it?
>
>Thomas
>
>----- Original Message -----
>> > 4) When I try to link my code with VTK, it does not remember the
>> > compiling options while it was doing so with the former version. 
>> In my
>> 
>> This is actually due to an update of VTK, not CMake.  Either way, 
>> we have
>> disabled the automatic setting of the compiler in projects using VTK.
>> There were too many problems with projects that use VTK and a second
>> library built by CMake.  When both VTK and the other library try to 
>> setthe compiler settings, they fight over it, and different source 
>> files get
>> built with different settings.
>> 
>> > CMake Error: The selected VTK was built with "g++", but the current
>> > compiler is "c++".  Please set CMAKE_CXX_COMPILER to "g++".
>> 
>> You have to set the compiler for your project to "g++" as the 
>> instructionsin the error message indicate.  This can be done by 
>> toggling on advanced
>> options in the CMake curses interface.  It can also be done by 
>> setting the
>> environment variable "CXX" to "g++" before running cmake in an 
>> empty build
>> tree for your project.
>> 
>> -Brad
>
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