[CMake] NMake Makefiles, 2.4.4 and target link libraries

[Patrick J. Franz -- ML]

Bill Hoffman wrote:

> There must be something else going on how is my_library_dep defined?  Is 
> it a cmake target?

Yes. It is built earlier via an include() command.

> The following works fine:
> add_library(bar SHARED bar.c)
> add_library(foo SHARED foo.c)
> target_link_libraries(foo bar)
> 
> It also works if bar is not a cmake built library.   Can you post the 
> CMakeCache.txt from that project?

Sure. I've attached a sanitized version below of the top-level 
CMakeLists.txt and the two that are pulled in via. include().

TOP-LEVEL CMAKELISTS.TXT
-------------------------
project(set_of_libraries C)

set(LIBRARY_OUTPUT_PATH lib)

add_subdirectory(components/component1)
add_subdirectory(components/component2)

include_directories(
   inc
   components/inc
   components/component2/src
   components/component1/src)

link_directories(
   components/component2/lib
   components/component1/lib
   lib)


include(cmake/my_library_dep.cmake)
include(cmake/my_library.cmake)


MY_LIBRARY_DEP.CMAKE
--------------------
set(my_library_dep_sources
   src/my_library_dep.c)
add_library(my_library_dep SHARED ${my_library_dep_sources})
target_link_libraries(my_library_dep setupapi component1)

set(my_library_dep_lib_name
${CMAKE_SHARED_LIBRARY_PREFIX}my_library_dep${CMAKE_SHARED_LIBRARY_SUFFIX})
add_custom_command(TARGET my_library_dep POST_BUILD
   COMMAND cmake -E copy
   ARGS lib/${my_library_dep_lib_name} t_api/${my_library_dep_lib_name})

MY_LIBRARY.CMAKE
----------------
set(my_library_sources
   src/my_library.c
   src/md_library_foo.c)
add_library(my_library SHARED ${my_library_sources})
target_link_libraries(my_library component2 my_library_dep)

set(my_library_lib_name
  ${CMAKE_SHARED_LIBRARY_PREFIX}my_library${CMAKE_SHARED_LIBRARY_SUFFIX})
add_custom_command(TARGET md POST_BUILD
   COMMAND cmake -E copy
   ARGS lib/${my_library_lib_name} t_api/${my_library_lib_name})

Looking at this, I suppose that if ${my_library_dep_lib_name} was also 
an internal variable, that could explain how the link library names ends 
up as ${my_library_dep_lib_name}.lib -> my_library.dll.lib?

Best Regards,
Patrick