Greetings,
In my CMakeLists.txt I declare a shared library target (for Android/JNI):
add_library(native-lib SHARED native-lib.cpp)
That depends on an external static library, which then depends upon a bunch of other static libraries (discoverable through pkg-config). I have been able to make this work by manually declaring all the dependencies, direct + transitive through a series of:
add_library(libA STATIC IMPORTED)
set_target_properties(libA PROPERTIES IMPORTED_LOCATION
${INSTALL_PREFIX}/libA/${ANDROID_ABI}/lib/libA.a)
And:
target_include_directories(native-lib PRIVATE
${INSTALL_PREFIX}/libA/${ANDROID_ABI}/include
...
)
But this is becoming pretty tedious so I’d like to take advantage of pkg-config discovery and keep CMakeLists simple. I have come up with a FindLibA.cmake script that uses pkg-config to discover all dependencies:
find_package(PkgConfig)
pkg_check_modules(LibA REQUIRED IMPORTED_TARGET libA)
And then in CMakeLists.txt I have:
target_link_libraries(native-lib PkgConfig::LibA)
(I know using ::PkgConfig here is not the best practice but I wanted to keep this as simple as possible)
When I build I notice from the output of the compile step that the header paths are properly populated with the help of pkg-config, but the link step fails to use proper -L... and -l... for the dependencies and breaks. Seems that cmake is trying to use the shared versions of the target link attributes (i.e. LibA_LDFLAGS) instead of the static (i.e. LibA_STATIC_LDFLAGS), as I can verify from the CMakeCache.txt
Is there a way to fix this and instruct cmake to use static attributes instead?
Thanks in advance