Update build instructions in contributing.md

We now show the more modern `-S {source}` instead of the old and
undocumented `-H{source}` CMake flag, and also show the available
presets, instead of individually specifying the different testing
options.

Closes #2593
This commit is contained in:
Martin Hořeňovský 2023-02-22 20:11:00 +01:00
parent 584973a485
commit a209bcfb54
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3 changed files with 19 additions and 8 deletions

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@ -55,6 +55,15 @@ tests from `SelfTest` through a specific reporter and then compare the
generated output with a known good output ("Baseline"). By default, new generated output with a known good output ("Baseline"). By default, new
tests should be placed here. tests should be placed here.
To configure a Catch2 build with just the basic tests, use the `basic-tests`
preset, like so:
```
# Assuming you are in Catch2's root folder
cmake -B basic-test-build -S . -DCMAKE_BUILD_TYPE=Debug --preset basic-tests
```
However, not all tests can be written as plain unit tests. For example, However, not all tests can be written as plain unit tests. For example,
checking that Catch2 orders tests randomly when asked to, and that this checking that Catch2 orders tests randomly when asked to, and that this
random ordering is subset-invariant, is better done as an integration random ordering is subset-invariant, is better done as an integration
@ -76,21 +85,23 @@ configuration and require separate compilation.
Finally, CMake config tests test that you set Catch2's compile-time Finally, CMake config tests test that you set Catch2's compile-time
configuration options through CMake, using CMake options of the same name. configuration options through CMake, using CMake options of the same name.
None of these tests are enabled by default. To enable them, add These test categories can be enabled one by one, by passing
`-DCATCH_BUILD_EXAMPLES=ON`, `-DCATCH_BUILD_EXTRA_TESTS=ON`, and `-DCATCH_BUILD_EXAMPLES=ON`, `-DCATCH_BUILD_EXTRA_TESTS=ON`, and
`-DCATCH_ENABLE_CONFIGURE_TESTS=ON` when configuration the CMake build. `-DCATCH_ENABLE_CONFIGURE_TESTS=ON` when configuring the build.
Bringing this all together, the steps below should configure, build, Catch2 also provides a preset that promises to enable _all_ test types,
and run all tests in the `Debug` compilation. `all-tests`.
The snippet below will build & run all tests, in `Debug` compilation mode.
<!-- snippet: catch2-build-and-test --> <!-- snippet: catch2-build-and-test -->
<a id='snippet-catch2-build-and-test'></a> <a id='snippet-catch2-build-and-test'></a>
```sh ```sh
# 1. Regenerate the amalgamated distribution # 1. Regenerate the amalgamated distribution (some tests are built against it)
./tools/scripts/generateAmalgamatedFiles.py ./tools/scripts/generateAmalgamatedFiles.py
# 2. Configure the full test build # 2. Configure the full test build
cmake -Bdebug-build -H. -DCMAKE_BUILD_TYPE=Debug -DCATCH_DEVELOPMENT_BUILD=ON -DCATCH_BUILD_EXAMPLES=ON -DCATCH_BUILD_EXTRA_TESTS=ON cmake -B debug-build -S . -DCMAKE_BUILD_TYPE=Debug --preset all-tests
# 3. Run the actual build # 3. Run the actual build
cmake --build debug-build cmake --build debug-build

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@ -6,7 +6,7 @@ rem 1. Regenerate the amalgamated distribution
python tools\scripts\generateAmalgamatedFiles.py python tools\scripts\generateAmalgamatedFiles.py
rem 2. Configure the full test build rem 2. Configure the full test build
cmake -Bdebug-build -H. -DCMAKE_BUILD_TYPE=Debug -DCATCH_DEVELOPMENT_BUILD=ON -DCATCH_BUILD_EXAMPLES=ON -DCATCH_BUILD_EXTRA_TESTS=ON -DCATCH_ENABLE_CONFIGURE_TESTS=ON cmake -B debug-build -S . -DCMAKE_BUILD_TYPE=Debug --preset all-tests
rem 3. Run the actual build rem 3. Run the actual build
cmake --build debug-build cmake --build debug-build

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@ -8,7 +8,7 @@
./tools/scripts/generateAmalgamatedFiles.py ./tools/scripts/generateAmalgamatedFiles.py
# 2. Configure the full test build # 2. Configure the full test build
cmake -Bdebug-build -H. -DCMAKE_BUILD_TYPE=Debug -DCATCH_DEVELOPMENT_BUILD=ON -DCATCH_BUILD_EXAMPLES=ON -DCATCH_BUILD_EXTRA_TESTS=ON -DCATCH_ENABLE_CONFIGURE_TESTS=ON cmake -B debug-build -S . -DCMAKE_BUILD_TYPE=Debug --preset all-tests
# 3. Run the actual build # 3. Run the actual build
cmake --build debug-build cmake --build debug-build