[CMake] Unix Makefiles/XCode not linking properly on Mac

[Neal Meyer]

Alright.  That fixed it in all of the projects.  The real project I'm doing
was originally done just on Visual studio,  and setting the dependencies is
all that was required to get the exe's to properly link.

Thx.

On Fri, Nov 14, 2008 at 10:47 AM, David Cole <david.cole at kitware.com> wrote:

> You do not need an "add_dependencies" call after the add_executable, you
> need a "target_link_libraries" to tell the exe to link in the library...
>
> HTH,
> David
>
> On Fri, Nov 14, 2008 at 1:23 PM, Neal Meyer <nmeyer at dottedzebra.com>wrote:
>
>> I built an extremely simple project.  Contains main.cpp, and then a
>> library with widget.cpp init.  here is the CMakeLists.txt that I'm using
>>
>> project( c++_cmd_line )
>> CMAKE_MINIMUM_REQUIRED(VERSION 2.6)
>>
>> #setup the output directories
>> set( LIB_OUT_DIR ${CMAKE_BINARY_DIR}/bin/lib )
>> set( EXE_OUT_DIR ${CMAKE_BINARY_DIR}/bin )
>> set( EXECUTABLE_OUTPUT_PATH ${EXE_OUT_DIR} )
>> set( LIBRARY_OUTPUT_PATH ${LIB_OUT_DIR} )
>>
>> add_library( widget STATIC widget.h widget.cpp )
>> add_executable( c++_cmd_line main.cpp )
>>
>> add_dependencies( c++_cmd_line widget )
>>
>>
>> main.cpp is just Hello world that calls a couple made up functions in the
>> widget class to get the dependencies.  And here is what the make spits out
>>
>> Scanning dependencies of target widget
>> [ 50%] Building CXX object CMakeFiles/widget.dir/widget.cpp.o
>> Linking CXX static library bin/lib/libwidget.a
>> [ 50%] Built target widget
>> Scanning dependencies of target c++_cmd_line
>> [100%] Building CXX object CMakeFiles/c++_cmd_line.dir/main.cpp.o
>> Linking CXX executable bin/c++_cmd_line
>> Undefined symbols:
>>   "Widget::get_i()", referenced from:
>>       _main in main.cpp.o
>>   "Widget::get_j()", referenced from:
>>       _main in main.cpp.o
>>   "Widget::Widget()", referenced from:
>>       _main in main.cpp.o
>> ld: symbol(s) not found
>> collect2: ld returned 1 exit status
>> make[2]: *** [bin/c++_cmd_line] Error 1
>> make[1]: *** [CMakeFiles/c++_cmd_line.dir/all] Error 2
>> make: *** [all] Error 2
>>
>> I've tried moving the build directory around and even running cmake
>> directly in my source directory, but to no avail.
>>
>> -Neal
>>
>>
>>
>> On Fri, Nov 14, 2008 at 5:16 AM, Michael Jackson <
>> mike.jackson at bluequartz.net> wrote:
>>
>>>
>>> On Nov 13, 2008, at 7:59 PM, Neal Meyer wrote:
>>>
>>>  I have a project that I have been working on for a while using the
>>>> Visual Studio generator in Windows, and I am now attempting to build in on
>>>> Mac.  Right now it's very early and I'm having problems building any of the
>>>> executables using the Unix Makefile generation or the XCode generator.  It's
>>>> basically just a couple of static libraries, that need to get linked into to
>>>> build the executable.  I have set them up as dependencies in the CMake
>>>> files, and in XCode they show as dependencies, and the Unix builds them in
>>>> the proper order.  But it doesn't appear to try to link them in via the make
>>>> files.  I'm makefile illiterate so there maybe something I'm missing in
>>>> them.
>>>>
>>>> Is there anywhere I could start to try to figure out what's wrong?
>>>>
>>>> -Neal
>>>>
>>>
>>> Do you get a link error when you try to compile? Does the code compile at
>>> all? Can yo post the error messages to the list?
>>>
>>>
>>> _________________________________________________________
>>> Mike Jackson                  mike.jackson at bluequartz.net
>>> BlueQuartz Software                    www.bluequartz.net
>>> Principal Software Engineer                  Dayton, Ohio
>>>
>>>
>>>
>>>
>>
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>>
>
>
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