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catch2/docs/build-systems.md
gnzlbg 69a921f2d6 Add documentation for the CMake build system 
- new file "docs/build-system.md" to document the integration of
  Catch with popular build systems.
- document how to configure Catch as a CMake external project.
2013-11-21 14:15:09 +01:00

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Integration with build systems

CMake

You can use the following CMake script to automatically fetch Catch from github and configure it as an external project:

cmake_minimum_required(VERSION 2.8.8)
project(catch_builder CXX)
include(ExternalProject)

ExternalProject_Add(
    catch
    PREFIX ${CMAKE_BINARY_DIR}/catch
    GIT_REPOSITORY https://github.com/philsquared/Catch.git
    TIMEOUT 10
    UPDATE_COMMAND ${GIT_EXECUTABLE} pull
    CONFIGURE_COMMAND ""
    BUILD_COMMAND ""
    INSTALL_COMMAND ""
    LOG_DOWNLOAD ON
   )

# Expose required variable (CATCH_INCLUDE_DIR) to parent scope
ExternalProject_Get_Property(catch source_dir)
set(CATCH_INCLUDE_DIR ${source_dir}/include CACHE INTERNAL "Path to include folder for Catch")

If you put it in, e.g., ${PROJECT_SRC_DIR}/${EXT_PROJECTS_DIR}/catch/, you can use it in your project by adding the following to your root CMake file:

# Includes Catch in the project:
add_subdirectory(${EXT_PROJECTS_DIR}/catch)
include_directories(${CATCH_INCLUDE_DIR} ${COMMON_INCLUDES})
enable_testing(true)  # Enables unit-testing.