Add support for FetchContent or find_package

[philipp-schmidt]

Neither find_package() nor FetchContent work out of the box for a standalone c++ cmake app.

find_package

Compile tritonclient manually and set CMAKE_PREFIX_PATH to the install folder. Alternatively install tritonclient globally. In any case, the following minimal cmake fails:

# tritonclient
find_package(TritonCommon REQUIRED)
find_package(TritonClient REQUIRED)

...
target_link_libraries(test PRIVATE TritonClient::grpcclient rt m dl)

CMake Error at CMakeLists.txt:43 (add_executable):
  Target "test" links to target "protobuf::libprotobuf" but the target was
  not found.  Perhaps a find_package() call is missing for an IMPORTED
  target, or an ALIAS target is missing?

FetchContent

# tritonclient
FetchContent_Declare(
    tritonclient
    GIT_REPOSITORY https://github.com/triton-inference-server/client
    GIT_TAG r24.04
)
set(TRITON_ENABLE_CC_GRPC ON)
set(TRITON_COMMON_REPO_TAG r24.04)
set(TRITON_THIRD_PARTY_REPO_TAG r24.04)
set(TRITON_CORE_REPO_TAG r24.04)
FetchContent_MakeAvailable(tritonclient)

...
target_link_libraries(test PRIVATE TritonClient::grpcclient rt m dl)

CMake Error at CMakeLists.txt:55 (add_executable):
  Target "test" links to target "TritonClient::grpcclient" but the target
  was not found.  Perhaps a find_package() call is missing for an IMPORTED
  target, or an ALIAS target is missing?

What is the recommended way to create a standalone app with tritonclient dependency currently? It seems that for find_package the link targets are broken and for FetchContent there is no support at all because no targets are exported.

[philipp-schmidt]

Linking against the static target seems to not work either:

# tritonclient
find_package(TritonCommon REQUIRED)
find_package(TritonClient REQUIRED)

...
target_link_libraries(test PRIVATE TritonClient::grpcclient_static rt m dl)

CMake Error at CMakeLists.txt:43 (add_executable):
  Target "test" links to target "gRPC::grpc++" but the target was not
  found.  Perhaps a find_package() call is missing for an IMPORTED target, or
  an ALIAS target is missing?

CMake Error at CMakeLists.txt:43 (add_executable):
  Target "test" links to target "gRPC::grpc" but the target was not found.
  Perhaps a find_package() call is missing for an IMPORTED target, or an
  ALIAS target is missing?

CMake Error at CMakeLists.txt:43 (add_executable):
  Target "test" links to target "protobuf::libprotobuf" but the target was
  not found.  Perhaps a find_package() call is missing for an IMPORTED
  target, or an ALIAS target is missing?