CMocka with CMake example

A sample project using CMocka with CMake. This project demonstrate the use of FetchContent with CMake 3.14 to fetch and build cmocka as part of a cmake c project.

Build and execute

git clone https://github.com/OlivierLDff/cmocka-cmake-example
cd cmocka-cmake-example
mkdir build && cd build
cmake ..
cmake --build . --config Release
ctest -C "Release"

Fetch CMocka

All the magic happen inside cmake/FetchCMocka.cmake.

include(FetchContent)

# Declare our target. We want the lastest stable version, not the master.
# Also specify GIT_SHALLOW to avoid cloning branch we don't care about
FetchContent_Declare(
  cmocka
  GIT_REPOSITORY https://git.cryptomilk.org/projects/cmocka.git
  GIT_TAG        cmocka-1.1.5
  GIT_SHALLOW    1
)

# We want to link to cmocka-static, so we need to set this option before calling the FetchContent_MakeAvailable
# We also don't care about example and tests
set(WITH_STATIC_LIB ON CACHE BOOL "CMocka: Build with a static library" FORCE)
set(WITH_CMOCKERY_SUPPORT OFF CACHE BOOL "CMocka: Install a cmockery header" FORCE)
set(WITH_EXAMPLES OFF CACHE BOOL "CMocka: Build examples" FORCE)
set(UNIT_TESTING OFF CACHE BOOL "CMocka: Build with unit testing" FORCE)
set(PICKY_DEVELOPER OFF CACHE BOOL "CMocka: Build with picky developer flags" FORCE)

# Download cmocka, and execute its cmakelists.txt
FetchContent_MakeAvailable(cmocka)

And then in your CMakelists.txt, simply call include(cmake/FetchCMocka.cmake).

Then the target cmocka-static will be available for

target_link_libraries(<target> PRIVATE cmocka-static).