FetchContent usage requires CCR_FETCH_DEPS to resolve dependencies (not documented)

[yosuke-lab]

Hi,

I tried to use this project via FetchContent as described in the README, but encountered link errors due to missing external dependencies.
(I'm using ubuntu:24.04 docker container)
Specifically, when using FetchContent with default options, the build fails with errors like cannot find -lbase64 .

It appears that these dependencies (e.g., base64 and gherkin) are only added when the CMake option CCR_FETCH_DEPS is enabled.

Without this option, the corresponding targets are not defined, and CMake falls back to treating them as plain linker flags (e.g., -lbase64), which leads to linker errors.

Enabling the following before FetchContent_MakeAvailable resolves the issue:

set(CCR_FETCH_DEPS ON CACHE BOOL "")

With this option enabled, FetchContent successfully pulls in and builds all required dependencies.

It would be helpful if:

• The CCR_FETCH_DEPS option was documented in the README
• Or dependencies were handled more transparently by default
• Or a minimal working FetchContent example was provided

Thanks!

[daantimmer]

You are correct yosuke-lab . I'll find some time to document that properly. (The need for the availability of the dependencies and how to optionally fetch them)