On 11/28/2010 3:19 AM, Sebastian Schaetz wrote:
Michael Hertling<mhertl...@...> writes:
1) In the top-level CMakeLists.txt, you might say
SET_SOURCE_FILES_PROPERTIES(
main.cpp PROPERTIES OBJECT_DEPENDS
${CMAKE_CURRENT_BINARY_DIR}/kernels/libkernel_executable.a
)
When libkernel_executable.a has changed, this results in recompiling
main.cpp - a penalty - and the desired relinking of main_target. If
main.cpp's recompilation is expensive you may possibly add an empty
cpp file to main_target's sources and impose the property on that.
Wow, those suggestions all sound great and I'm completely unfamiliar with them
(so I think there's a good chance they will work). I will try them as soon as
possible! Thanks a lot for the suggestions.
No need for all the complication...
If you already know where the library is going to be:
${CMAKE_CURRENT_BINARY_DIR}/kernels/libkernel_executable.a
Then link directly to the full path:
target_link_libraries(main_target
${CMAKE_CURRENT_BINARY_DIR}/kernels/libkernel_executable.a)
Now the makefiles will depend on that file and it will relink when that
.a changes. This is why link_directories/*link_libraries without a
full path to the library is almost always a bad idea...
-Bill
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