Reinhold Gschweicher 2375a7f5b7 Fix Catch.cmake helper by setting variable globally
Set `_CATCH_DISCOVER_TESTS_SCRIPT` helper variable globally. Otherwise in a
scoped call (like `add_subdirectory()`) the variable gets lost. This lost
variable results in a post build error with not much information to lead to the
root of the problem.

This enables the usage of the helper script with the following example structure

- CMakeLists.txt (project root with `add_subdirectory(external/catch2)`
- external/catch2
  - CMakeLists.txt (contents listed below)
  - contrib/Catch.cmake
  - contrib/CatchAddTests.cmake
  - catch2/catch.hpp
- tests
  - CMakeLists.txt (add tests with `catch_discover_tests(${PROJECT_NAME})`)

contents of project specific helper `external/catch2/CMakeLists.txt`
```cmake
cmake_minimum_required (VERSION 3.1...${CMAKE_VERSION})
project(Catch2 LANGUAGES CXX VERSION 2.13.3)
add_library(Catch2 INTERFACE)
target_include_directories(Catch2
  INTERFACE
    $<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}>
)
 # provide a namespaced alias for clients to 'link' against if catch is included as a sub-project
add_library(Catch2::Catch2 ALIAS Catch2)
include(contrib/Catch.cmake)
```
2020-12-17 18:50:04 +01:00
2019-09-06 12:12:47 +02:00
2019-04-10 09:42:11 +02:00
2020-11-18 21:37:12 +01:00
2020-10-31 18:21:23 +01:00
2020-11-18 21:37:10 +01:00
2020-05-29 14:56:40 +02:00
2018-07-23 10:15:52 +02:00
2019-10-03 00:00:17 +02:00
2020-11-18 21:37:12 +01:00
2020-11-26 15:05:58 +01:00
2017-08-17 07:45:12 +01:00
2020-11-26 15:05:58 +01:00
2020-10-31 18:21:23 +01:00

catch logo

Github Releases Build Status Build status codecov Try online Join the chat in Discord: https://discord.gg/4CWS9zD

The latest version of the single header can be downloaded directly using this link

Catch2 is released!

If you've been using an earlier version of Catch, please see the Breaking Changes section of the release notes before moving to Catch2. You might also like to read this blog post for more details.

What's the Catch?

Catch2 is a multi-paradigm test framework for C++. which also supports Objective-C (and maybe C). It is primarily distributed as a single header file, although certain extensions may require additional headers.

How to use it

This documentation comprises these three parts:

More

Description
A modern, C++-native, test framework for unit-tests, TDD and BDD - using C++14, C++17 and later (C++11 support is in v2.x branch, and C++03 on the Catch1.x branch)
Readme 62 MiB
Languages
C++ 90.1%
CMake 5.5%
Python 3.2%
Meson 0.7%
Starlark 0.3%