Build failure on os x / m2 / clang / conan2

[truedat101]

Two issues:

• conanfile.txt is missing
• cmake .. -DEXPRESSCPP_USE_CONAN_DEPENDENCIES=ON fails

ERROR: Invalid generator 'cmake'. Available types: CMakeToolchain, CMakeDeps, MesonToolchain, MSBuildDeps, MSBuildToolchain, NMakeToolchain, NMakeDeps, VCVars, QbsProfile, VirtualRunEnv, VirtualBuildEnv, AutotoolsDeps, AutotoolsToolchain, GnuToolchain, PkgConfigDeps, BazelDeps, BazelToolchain, IntelCC, XcodeDeps, XcodeToolchain, PremakeDeps, MakeDeps, SConsDeps
0.31.0
CMake Error at cmake/conan.cmake:402 (message):
  Conan install failed='1'
Call Stack (most recent call first):
  cmake/conan.cmake:497 (conan_cmake_install)
  CMakeLists.txt:126 (conan_cmake_run)

[truedat101]

This looks like a classic conan2 decided some arbitrary thing to "fix" up for you: https://stackoverflow.com/a/75794804/796514

[truedat101]

another question: https://stackoverflow.com/questions/75671604/how-to-use-conan-cmake-run-with-conan2

[truedat101]

According to "copilot" via bing:

In Conan 2, the conan_cmake_run() function has been replaced by a combination of tools that provide more flexibility and integration with CMake. The main tools you would use are CMakeDeps, CMakeToolchain, and the CMake build helper.

Here's a brief overview of these tools:

1. 
CMakeDeps: This tool generates the CMake configuration files for all the required dependencies of a package.
2. 
CMakeToolchain: This tool generates the toolchain file needed by CMake to build the packages according to the information provided by Conan, such as the operating system, compiler, and architecture.
3. CMake build helper: This tool is used by Conan to run CMake and pass all the necessary arguments for a successful build, including the toolchain file and other CMake definitionshttps://docs.conan.io/2/integrations/cmake.htmlhttps://docs.conan.io/2.8/tutorial/consuming_packages/use_tools_as_conan_packages.html.

Here's an example of how you might use these tools in your conanfile.py:

from conan import ConanFile
from conan.tools.cmake import CMake, CMakeToolchain, CMakeDeps

class MyPackage(ConanFile):
name = "mypackage"
version = "1.0"
settings = "os", "compiler", "build_type", "arch"
requires = "some_dependency/1.0"
generators = "CMakeDeps", "CMakeToolchain"

def generate(self):
tc = CMakeToolchain(self)
tc.generate()
deps = CMakeDeps(self)
deps.generate()

def build(self):
cmake = CMake(self)
cmake.configure()
cmake.build()

In this example, CMakeToolchain and CMakeDeps are used to generate the necessary files for CMake, and the CMake build helper is used to configure and build the projecthttps://docs.conan.io/2/integrations/cmake.htmlhttps://docs.conan.io/2.8/tutorial/consuming_packages/use_tools_as_conan_packages.html.

Does this help clarify things? If you have more questions about Conan or anything else, feel free to ask!

[truedat101]

It's probably easier not to use the deps, and let the non-conan magic work. Retesting on linux to ensure it works.