I am working on a complex CMake project that is part of a large legacy
system that uses a top level project and "add_subdirectory" to create
subprojects.
I have run into an issue because now one of the subprojects is dependant on
another subproject, but I can't seem to find a clear way to tell CMake
about this dependency.
Consider this example:
my_project/
CMakeLists.txt:
add_subdirectory('subproject1')
add_subdirectory('subproject2')
my_project/subproject1/
CMakeLists.txt:
add_executable(subproject1_exe <sources>)
target_link_libraries(subproject1_exe subproject2_lib) # <--
THIS is the problem
my_project/subproject2/
CMakeLists.txt:
add_library(subproject2_lib <sources>)
The actual code is much more complex than this, but this simple example
illustrates the problem. The actual compilation error I am getting is
caused by subproject1 including a header file that gets generated when
subproject2 is built.
Does anyone know how to properly tell CMake about the dependency so it will
build correctly?
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