problem with find_package()

Usage
1

i am completely new to use cmake. i am facing an issue with debugging the following error.

Observed:

CMake Error at CMakeLists.txt:30 (find_package):
  find_package called with incorrect number of arguments


 was not found. Please specify vsomeip_DIR
-- Configuring incomplete, errors occurred!

CMakeLists.txt content:

cmake_minimum_required (VERSION 2.8.7)
project (vSomeIPHelloWorld)

find_package(Threads REQUIRED)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")

include_directories(${VSOMEIP_INCLUDE_DIRS})

add_library(vsomeip_hello_world_service INTERFACE)
target_sources(vsomeip_hello_world_service INTERFACE
    "${CMAKE_CURRENT_SOURCE_DIR}/hello_world_service.hpp"
)
target_include_directories(vsomeip_hello_world_service INTERFACE
        "${CMAKE_CURRENT_SOURCE_DIR}"
)

add_library(vsomeip_hello_world_client INTERFACE)
target_sources(vsomeip_hello_world_client INTERFACE
    "${CMAKE_CURRENT_SOURCE_DIR}/hello_world_client.hpp"
)
target_include_directories(vsomeip_hello_world_client INTERFACE
        "${CMAKE_CURRENT_SOURCE_DIR}"
        )

if (NOT ${CMAKE_SYSTEM_NAME} MATCHES "Android")
    # This will get us acces to
    #   VSOMEIP_INCLUDE_DIRS - include directories for vSomeIP
    #   VSOMEIP_LIBRARIES    - libraries to link against
    find_package(${VSOMEIP_NAME})
    if (NOT ${VSOMEIP_NAME}_FOUND)
        message("${VSOMEIP_NAME} was not found. Please specify vsomeip_DIR")
    endif()

    add_executable (hello_world_service hello_world_service_main.cpp)
    target_link_libraries(hello_world_service vsomeip_hello_world_service ${VSOMEIP_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})

    add_executable (hello_world_client hello_world_client_main.cpp)
    target_link_libraries(hello_world_client vsomeip_hello_world_client ${VSOMEIP_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
endif()

Kindly help me in resolving the issue.

2

The error message indicates that you’ve called find_package with the wrong number of arguments. What is the value of the VSOMEIP_NAME variable?

3

i don’t know how to check the variable value.

4

You can use something like:

message("-->${VSOMEIP_NAME}<--")

with the arrows there to help pinpoint the value.

5

it is displaying nothing as follows

CMake Error at CMakeLists.txt:30 (find_package):
find_package called with incorrect number of arguments

–><–
was not found. Please specify vsomeip_DIR
– Configuring incomplete, errors occurred!

6

That variable is then empty. You’ll need to set it to the name of the package that should be found.

7

okay.
will try setting the variable.

8

Thanks a lot. It is working after setting the variable value.

9

Hi @kondachaitanya1993, I have the same problem.
Could you explain how you set the variable value?
I’ve tried setting VSOMEIP_NAME as an environment variable like this: “export VSOMEIP_NAME=/mnt/c/Users/Elias/wsl/vsomeip/build” (notice I’m using WSL… /vsomeip/build is the directory where I’ve built the vsomeip stack).
This does not work for me, however.

10

That variable is a CMake variable. It doesn’t read the environment. You’ll need to add set(VSOMEIP_NAME …) to the CMake code, pass -DVSOMEIP_NAME=… on the command line, or set the variable in the GUI.

11

Adding set(VSOMEIP_NAME …) in the CMake file indeed fixed it.
Thanks!

12

For future newbies like me

VSOMEIP_NAME is found in your original vsomeip build folder rootfolder/build/<VSOMEIP_NAME>Config.cmake

So

set(VSOMEIP_NAME "vsomeip3") in my case