Simple example

[AltenOosterbeek]

Hi Pepe,

I'm new to Conan and I was checking out your ConanCMakeToolchainGenerator. It looks like something I have been looking for. However, I am not able to set up a simple example. Using your source, I use the command "conan create . wo/testing. However, it fails in some way in the testing stage.

• I had to change the arm-none-eabi-gcc_installer package to one built by myself
• It gives the error "CONAN_CMAKE_TOOLCHAIN_FILE was expected but not set." which I can fix through setting the profile "conan create . wo/testing --profile=cross. However, I would also like it to work when not setting a profile. How would I do this?
• Then I get the error "CMake Error: CMake was unable to find a build program corresponding to "Ninja". CMAKE_MAKE_PROGRAM is not set.". I'm not sure why this happens, since the package ninja_installer/1.9.0@bincrafters/stable is included in the build_requires. I don't find the conan docs sufficient on this, so I might be doing something wrong.

It would be very helpful to write down an example, instead of only the CMakeLists file you give now, with for example a project that includes one main file and one dependency. That would really help.

Kind regards.

Wouter Oosterbeek

[AltenOosterbeek]

Ok, apparently, this was due to my lack of knowledge. With the help of https://docs.conan.io/en/latest/howtos/custom_generators.html I figured it out. Maybe add that link and specifically mention to use "conan export ." (instead of conan create as I did...) and then in the conanfile.txt you can add the conan package "cmake_toolchain_generator/0.2@.../..." to [requires] and CmakeToolchain to [generators], only thing to do then is add "include( ${CMAKE_BINARY_DIR}/conan_toolchain.cmake )" to CMakeLists.txt (I'm not sure if it is necessary to place is before project?). I think if you add this information in the readme, things will be a lot easier for people.