[CMake] problem creating a library on mac

[Mike Jackson]

Marie,
   Use the following in your CMakeLists.txt file, generally near the  
top just after you define the PROJECT (... )

SET (LIBRARY_OUTPUT_PATH "${PROJECT_BINARY_DIR}/Bin" CACHE INTERNAL  
"For libraries.")
SET (EXECUTABLE_OUTPUT_PATH "${PROJECT_BINARY_DIR}/Bin" CACHE  
INTERNAL "For executables.")

This will put all the compiled libraries and executables into the  
same bin directory.

Also, I think you may be missing a key philosophy of CMake which is  
"Out of Source" builds. In your project folder create a new folder  
called "Build". Then from the a terminal run the following commands:
  cd Build
  cmake ../
  make

What this does is create the Build directory, moves into that  
directory, then runs cmake from within the Build directory. This will  
encapsulate all the cmake files, intermediate files, and compiled  
libraries/executables in ONE sub directory within your project. If  
you ever need to clean to do a CVS update/Checkout/Distribution or  
clean build so can safely remove EVERYTHING within the "Build"  
directory and rerun cmake again. Others in the cmake community will  
put the build directory at the same level as the ProjectDir. So the  
commands look like:
  mkdir Build
  cmake ../ProjectDir
  make

Also, on to the actual problem, can you post the actual linker  
command? Run "make VERBOSE=1" and post the output.

-- 
Mike Jackson   Senior Research Engineer
Innovative Management & Technology Services


On Sep 27, 2007, at 3:46 PM, Marie-Christine Vallet wrote:

> Mike Jackson wrote:
>> What are the errors you are getting on OS X?
> I get an undefined symbol error for several of my variables.
> If I do the linking manually, leaving out the library, and putting  
> the .o of the library and use the same flags, it works.
>>
>> Also, at least one comment, I am not sure you want to be setting  
>> the PROJECT_BINARY_DIR Variable?
>>
>> What are you trying to do with this statement:
>>
>> SET(PROJECT_BINARY_DIR
>> ${CMAKE_SOURCE_DIR}/bin)
>>
> I just wanted the binary to be in this folder  (and all the files  
> created by cmake to be in this directory so I could clean up my  
> directory more easily )
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