[CMake] LINK_DIRECTORIES before ADD_EXECUTABLE?

[Tyler Roscoe]

On Mon, May 18, 2009 at 11:21:17PM +0100, John Platt wrote:
> INCLUDE_DIRECTORIES( /usr/local/boost_1_39_0 )
> ADD_LIBRARY( lib1 STATIC ${lib1_srcs} )
> 
> ADD_EXECUTABLE( lib1test lib1test.cpp )
> LINK_DIRECTORIES( /usr/local/lib ) # boost stuff
> TARGET_LINK_LIBRARIES( lib1test lib1 boost_filesystem-gcc42-mt boost_system-gcc42-mt )

[...]

> If LINK_DIRECTORIES is moved before ADD_EXECUTABLE -
> 
> LINK_DIRECTORIES( /home/john/lib1/src ) ## works here
> ADD_EXECUTABLE( lib2test lib2test.cpp )
> TARGET_LINK_LIBRARIES( lib2test lib2 lib1 boost_filesystem-gcc42-mt boost_system-gcc42-mt)
> 
> lib2test links and executes.
> 
> 1. Are the boost libraries statically or dynamically linked to lib1test?

I believe that depends on whether your boost libraries are static or
dynamic libraries. Maybe I don't understand the question?

> 2. Why does moving LINK_DIRECTORIES before ADD_EXECUTABLE appear to fix things?