[develop2, BUG] Unknown arguments specified in conan_provider.cmake:519

[YanzhaoW]

Hello,

I'm trying to install conan packages using conan_provider. But I got the following error:

CMake Warning (dev) at conan_provider.cmake:519 (if):
  Policy CMP0057 is not set: Support new IN_LIST if() operator.  Run "cmake
  --help-policy CMP0057" for policy details.  Use the cmake_policy command to
  set the policy and suppress this warning.

  IN_LIST will be interpreted as an operator when the policy is set to NEW.
  Since the policy is not set the OLD behavior will be used.
Call Stack (most recent call first):
  CMakeLists.txt:5 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Warning (dev) at conan_provider.cmake:519 (if):
  Policy CMP0057 is not set: Support new IN_LIST if() operator.  Run "cmake
  --help-policy CMP0057" for policy details.  Use the cmake_policy command to
  set the policy and suppress this warning.

  IN_LIST will be interpreted as an operator when the policy is set to NEW.
  Since the policy is not set the OLD behavior will be used.
Call Stack (most recent call first):
  CMakeLists.txt:5 (find_package)
This warning is for project developers.  Use -Wno-dev to suppress it.

CMake Error at conan_provider.cmake:519 (if):
  if given arguments:

    "default" "IN_LIST" "CONAN_HOST_PROFILE" "OR" "default" "IN_LIST" "CONAN_BUILD_PROFILE"

  Unknown arguments specified
Call Stack (most recent call first):
  CMakeLists.txt:5 (find_package)

CMake Error at CMakeLists.txt:5 (find_package):
  By not providing "Findsol2.cmake" in CMAKE_MODULE_PATH this project has
  asked CMake to find a package configuration file provided by "sol2", but
  CMake did not find one.

  Could not find a package configuration file provided by "sol2" with any of
  the following names:

    sol2Config.cmake
    sol2-config.cmake

  Add the installation prefix of "sol2" to CMAKE_PREFIX_PATH or set
  "sol2_DIR" to a directory containing one of the above files.  If "sol2"
  provides a separate development package or SDK, be sure it has been
  installed.

command

cmake --preset default ..

CMakePresets.json

{
    "version": 4,
    "cmakeMinimumRequired": {
        "major": 3,
        "minor": 24,
        "patch": 0
    },
    "configurePresets": [
        {
            "name": "default",
            "displayName": "Default Config",
            "description": "Default build using Ninja generator",
            "generator": "Ninja",
            "binaryDir": "${sourceDir}/build/default",
            "cacheVariables": {
                "CMAKE_EXPORT_COMPILE_COMMANDS": "ON",
                "CMAKE_BUILD_TYPE": "RelWithDebInfo",
                "CMAKE_PROJECT_TOP_LEVEL_INCLUDES": "conan_provider.cmake"
            }
        }
    ]
}

CMakeLists.txt

project(cppsol2)
cmake_minimum_required(VERSION 3.24)
find_package(sol2 REQUIRED)
add_executable(main main.cpp)
target_link_libraries(main PUBLIC sol2::sol2)

conanfile.txt

[requires]
sol2/3.3.1

[generators]
CMakeDeps
CMakeToolchain

[layout]
cmake_layout

Here are some version infos:

• cmake: 3.24.3
• conan: 2.0.17
• os: Debian GNU/Linux 10 (buster)

[memsharded]

Thanks for your report @YanzhaoW

It seems your CMakeLists.txt is incorrect. The cmake_minimum_required() must be before project().

Also, you will need to set the CXX standard, otherwise sol2 will fail, so something like:

cmake_minimum_required(VERSION 3.24)
project(cppsol2)

set(CMAKE_CXX_STANDARD 17)
find_package(sol2 REQUIRED)
add_executable(main main.cpp)
target_link_libraries(main PUBLIC sol2::sol2)

[YanzhaoW]

Thanks very much for your answer. @memsharded

Yes, putting cmake_minimum_required() before project() solves the issue.