[CMake] How to invoke a separate build with CMAKE_CUSTOM_TARGET?

[Heine, Christian (EXTERN: VWGEDS)]

I've followed your instructions, removed the obsolete lines but
no effect, the libbrOpenGL.dll which is located at ./lib is still 
missing on startup ...  

The br* stuff are my dependencies library which I've created 
and installed separatelly, not in context of the actual project.
The resulting dll's of those modules are installed to system32
folder.

What I've figured out is, that anything works if I place the 
libbrOpenGL.dll directly in the module/cmake root folder and
not at lib subdirectory ...

>Mit freundlichen Grüßen
>
Christian Heine

T-Systems on site services GmbH
Procurement Systems

>Telefon/phone: +49-5361-9-78564
>E-Mail: extern.christian.heine at volkswagen.de
>
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E-Mail: christian.heine at t-systems.com
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-----Ursprüngliche Nachricht-----
Von: cmake-bounces at cmake.org [mailto:cmake-bounces at cmake.org] Im Auftrag von Rolf Eike Beer
Gesendet: Donnerstag, 12. Mai 2011 17:29
An: cmake at cmake.org
Betreff: Re: [CMake] How to invoke a separate build with CMAKE_CUSTOM_TARGET?

Am Donnerstag, 12. Mai 2011, 14:51:42 schrieb Heine, Christian:
> Hmm, this is strange. I've followed your instructions, but those take no
> effect. When i try to run the executable I got the failure message box that
> my libbrOpenGL.dll of the acutal build result is missing. Here is what I do
> on demo build:
> 
> INCLUDE_DIRECTORIES(${CMAKE_CURRENT_BINARY_DIR}
> 		        ${CMAKE_CURRENT_SOURCE_DIR}
>                     ${CMAKE_SOURCE_DIR}/include
>                     ${COMPILER_ROOT}/include/binrev
> )
> 
> # Find OpenGL library using default CMake find script
> FIND_PACKAGE(OpenGL REQUIRED)
> 
> # create output directory
> SET(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_SOURCE_DIR}/bin)
> 
> # Make sure the linker can find our libraries once they are built.
> LINK_DIRECTORIES(${CMAKE_SOURCE_DIR}/lib)

This is basically always wrong. Since you usually pass absolute paths to 
target_link_libraries() this doesn't help in any way but may cause trouble. 
Just don't do it.

> # Find our cmake utils with different reusable macros
> FIND_PACKAGE(OpenGL REQUIRED)

You already did that before.

> # create exectuable
> SET(EXECUTABLE_OUTPUT_PATH ${CMAKE_SOURCE_DIR}/bin)

Since CMAKE_RUNTIME_OUTPUT_DIRECTORY is already set you should not need that 
anymore.

> ADD_EXECUTABLE(mydemo demo_win32Camera.cpp)
> 
> #link test libraries for unit tests
> TARGET_LINK_LIBRARIES( mydemo
>        	           brOpenGL  # this is the library of the actual build
>        	           brCore brMath brGraphics # this are other required 
libs
> )

These br* things are be created by add_library(... shared ...) in your 
project, no? Then this should work if you had previously set 
CMAKE_LIBRARY_OUTPUT_DIRECTORY to bin or so.

Eike