Split build production vs testing

.github/workflows/ci.yml

@@ -12,12 +12,12 @@ jobs:
       fail-fast: false
       matrix:
         config:
-          - {name: "Ubuntu Clang 17", os: ubuntu-24.04, toolchain: "clang-17-toolchain.cmake", clang_version: 17, installed_clang_version: 14, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
-          - {name: "Ubuntu Clang 18", os: ubuntu-24.04, toolchain: "clang-18-toolchain.cmake", clang_version: 18, installed_clang_version: 14, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
+          - {name: "Ubuntu Clang 17", os: ubuntu-24.04, toolchain: "clang-17", clang_version: 17, installed_clang_version: 17, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
+          - {name: "Ubuntu Clang 18", os: ubuntu-24.04, toolchain: "clang-18", clang_version: 18, installed_clang_version: 17, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
           # Note: clang-19 + Asan setup causes errors on some platforms. Temporary skip some checks via .asan_options.
-          - {name: "Ubuntu Clang 19", os: ubuntu-24.04, toolchain: "clang-19-toolchain.cmake", clang_version: 19, installed_clang_version: 14, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" ", asan_options: "new_delete_type_mismatch=0"}
-          - {name: "Ubuntu GCC 13", os: ubuntu-24.04, toolchain: "gcc-13-toolchain.cmake", clang_version: 17, installed_clang_version: 14, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
-          - {name: "Ubuntu GCC 14", os: ubuntu-24.04, toolchain: "gcc-14-toolchain.cmake", clang_version: 17, installed_clang_version: 14, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
+          - {name: "Ubuntu Clang 19", os: ubuntu-24.04, toolchain: "clang-19", clang_version: 19, installed_clang_version: 17, cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" ", asan_options: "new_delete_type_mismatch=0"}
+          - {name: "Ubuntu GCC 13", os: ubuntu-24.04, toolchain: "gcc-13",  cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
+          - {name: "Ubuntu GCC 14", os: ubuntu-24.04, toolchain: "gcc-14", cmake_args: "-G \"Ninja Multi-Config\" -DCMAKE_CONFIGURATION_TYPES=\"RelWithDebInfo;Asan\" "}
     steps:
       - uses: actions/checkout@v3
         with:
@@ -26,13 +26,14 @@ jobs:
       - name: Activate verbose shell
         run: set -x
       - name: Install LLVM+Clang
-        if: startsWith(matrix.config.os, 'ubuntu-')
+        if: startsWith(matrix.config.name, 'Ubuntu Clang')
         run: |
           set -x
           cat /etc/lsb-release
-          sudo apt-get remove clang-${{matrix.config.installed_clang_version}} \
-            lldb-${{matrix.config.installed_clang_version}} \
-            lld-${{matrix.config.installed_clang_version}} \
+          # Remove existing Clang installations.
+          sudo apt-get remove \
+            clang-${{matrix.config.installed_clang_version}} \
+            clang++-${{matrix.config.installed_clang_version}} \
             clangd-${{matrix.config.installed_clang_version}} \
             clang-tidy-${{matrix.config.installed_clang_version}} \
             clang-format-${{matrix.config.installed_clang_version}} \
@@ -41,39 +42,51 @@ jobs:
             lld-${{matrix.config.installed_clang_version}} \
             lldb-${{matrix.config.installed_clang_version}} \
             llvm-${{matrix.config.installed_clang_version}}-tools \
-            libomp-${{matrix.config.installed_clang_version}}-dev \
             libc++-${{matrix.config.installed_clang_version}}-dev \
             libc++abi-${{matrix.config.installed_clang_version}}-dev \
             libclang-common-${{matrix.config.installed_clang_version}}-dev \
             libclang-${{matrix.config.installed_clang_version}}-dev \
             libclang-cpp${{matrix.config.installed_clang_version}}-dev \
-            libunwind-${{matrix.config.installed_clang_version}}-dev
+            libomp-${{matrix.config.installed_clang_version}}-dev \
+            libunwind-${{matrix.config.installed_clang_version}}-dev \
+            libc++-dev libc++1 libc++abi-dev libc++abi1
+          # Install LLVM+Clang.
+          CLANG_VERSION=$(echo ${{matrix.config.toolchain}} | cut -d '-' -f2)
           wget https://apt.llvm.org/llvm.sh
           chmod +x llvm.sh
-          sudo ./llvm.sh ${{matrix.config.clang_version}} all
-          sudo apt-get install libc++-dev libc++1 libc++abi-dev libc++abi1
-      - name: Install GCC 14
-        if: matrix.config.name == 'Ubuntu GCC 14'
+          sudo ./llvm.sh ${CLANG_VERSION} all
+          # Link Clang libraries (if not done by llvm.sh - some links are already set).
+          sudo ln -fs /usr/lib/llvm-${CLANG_VERSION}/lib/lib* /usr/lib/x86_64-linux-gnu/ || true
+          # If Clang 17, install a newer version of libc++ and libc++abi.
+          [[ ${CLANG_VERSION} = 17 ]] && sudo apt-get install libc++-dev libc++1 libc++abi-dev libc++abi1
+          find /usr/lib/x86_64-linux-gnu/ -name libc++.so* || true
+          clang++-${CLANG_VERSION} --version
+      - name: Install GCC
+        if: startsWith(matrix.config.name, 'Ubuntu GCC')
         run: |
           set -x
+          # Remove existing GCC installations.
+          sudo apt-get remove gcc-13 g++-13 gcc-14 g++-14 gcc g++
           sudo apt update
-          sudo apt-get install g++-14
-      - name: Configure
+          # Install GCC.
+          GCC_VERSION=$(echo ${{matrix.config.toolchain}} | cut -d '-' -f2)
+          echo "GCC_VERSION=$GCC_VERSION"
+          sudo apt-get install g++-${GCC_VERSION} gcc-${GCC_VERSION}
+          find /usr/lib/x86_64-linux-gnu/ -name libstdc++.so*
+          g++-${GCC_VERSION} --version
+      - name: CMake Configure
         run: |
           set -x
-          rm -rf .build
-          mkdir -p .build
-          cd .build
           echo ${{ matrix.config.cmake_args }}
           echo ${{ matrix.config.toolchain }}
-          cmake ${{ matrix.config.cmake_args }} -DCMAKE_TOOLCHAIN_FILE=etc/${{ matrix.config.toolchain }} -B . -S ..
-      - name: Build
+          rm -rf .build
+          cmake ${{ matrix.config.cmake_args }} -DCMAKE_TOOLCHAIN_FILE="etc/${{ matrix.config.toolchain }}-toolchain.cmake" -B .build -S .
+      - name: CMake Build
         run: |
           set -x
           cmake --build .build --config Asan --target all -- -k 0
-      - name: Test
+      - name: CMake Test
         run: |
           set -x
-          cd .build
           [[ ! -z "${{ matrix.config.asan_options }}" ]]  && export ASAN_OPTIONS="${{ matrix.config.asan_options }}"
-          ctest --build-config Asan --output-on-failure
+          ctest --build-config Asan --output-on-failure --test-dir .build

.gitmodules

@@ -1,6 +1,3 @@
 [submodule "papers/wg21"]
 	path = papers/P2988/wg21
 	url = https://github.com/mpark/wg21.git
-[submodule "extern/googletest"]
-	path = extern/googletest
-	url = https://github.com/google/googletest.git

CMakeLists.txt

@@ -3,19 +3,31 @@
 # SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 # cmake-format: on
 
-cmake_minimum_required(VERSION 3.10)
+cmake_minimum_required(VERSION 3.27)
 
 project(
   beman_optional26
   VERSION 0.0.0
   LANGUAGES CXX)
 
-enable_testing()
+# Includes
+include(CTest)
+include(FetchContent)
 
 set(TARGETS_EXPORT_NAME ${CMAKE_PROJECT_NAME}Targets)
 
-add_subdirectory(extern)
-add_subdirectory(src)
+# Build the tests only if enabled via the CLI flag: BUILD_TESTING.
+if(BUILD_TESTING)
+  # Fetch GoogleTest
+  FetchContent_Declare(
+    googletest
+    GIT_REPOSITORY https://github.com/google/googletest.git
+    GIT_TAG f8d7d77c06936315286eb55f8de22cd23c188571 # release-1.14.0
+  )
+  FetchContent_MakeAvailable(googletest)
+endif()
+
+add_subdirectory(src/Beman/Optional26)
 add_subdirectory(examples)
 
 include(GNUInstallDirs)

CMakePresets.json

@@ -68,33 +68,40 @@
     },
     {
       "name": "system",
+      "inherits": "common",
       "configurePreset": "system"
     },
     {
       "name": "gcc-14",
+      "inherits": "common",
       "configurePreset": "gcc-14"
     },
     {
       "name": "gcc-13",
+      "inherits": "common",
       "configurePreset": "gcc-13"
     },
     {
       "name": "clang-19",
+      "inherits": "common",
       "configurePreset": "clang-19"
     },
     {
       "name": "clang-18",
+      "inherits": "common",
       "configurePreset": "clang-18"
     },
     {
       "name": "clang-17",
+      "inherits": "common",
       "configurePreset": "clang-17"
     }
   ],
   "testPresets": [
     {
       "name": "common",
       "hidden": true,
+      "configuration": "Asan",
       "output": {
         "outputOnFailure": true
       },

README.md

@@ -13,6 +13,24 @@ This repository implements `std::optional` extensions targeting C++26. The `Bema
 * [Give *std::optional* Range Support (P3168R2)](https://wg21.link/P3168R2)
 * [`std::optional<T&>` (P2988R5)](https://wg21.link/P2988R5)
 
+## Table of Contents
+
+* [Beman.Optional26: C++26 Extensions for std::optional](#bemanoptional26-c26-extensions-for-stdoptional)
+  * [Table of Contents](#table-of-contents)
+  * [License](#license)
+  * [Examples](#examples)
+    * [range\_loop](#range_loop)
+    * [optional\_ref](#optional_ref)
+  * [How to Build](#how-to-build)
+    * [Compiler Support](#compiler-support)
+    * [Dependencies](#dependencies)
+    * [Instructions](#instructions)
+      * [Preset CMake Flows](#preset-cmake-flows)
+      * [Custom CMake Flows](#custom-cmake-flows)
+        * [Build and Run Tests](#build-and-run-tests)
+        * [Build Production, but Skip Tests](#build-production-but-skip-tests)
+  * [Papers](#papers)
+
 ## License
 
 Source is licensed with the Apache 2.0 license with LLVM exceptions
@@ -123,7 +141,7 @@ apt-get install                           \
 
 Full set of supported toolchains can be found in [.github/workflows/ci.yml](.github/workflows/ci.yml).
 
-#### Basic Build
+#### Preset CMake Flows
 
 This project strives to be as normal and simple a CMake project as possible. This build workflow in particular will work, producing a static `beman_optional26` library, ready to package:
 
@@ -168,15 +186,56 @@ Total Test time (real) =   0.09 sec
 
 This should build and run the tests with GCC 14 with the address and undefined behavior sanitizers enabled.
 
-#### More complex cases
+#### Custom CMake Flows
+
+##### Build and Run Tests
 
-The CMake preset system suffers from combinitorial explosion. There is a makefile in the root of the repository to aid in running more configurations.
+CI current build and test flows:
 
 ```shell
-make -k TOOLCHAIN=clang-18  CONFIG=Tsan  VERBOSE=1
+# Configure build: default build production code + tests (BUILD_TESTING=ON by default).
+$ cmake -G "Ninja Multi-Config" -DCMAKE_CONFIGURATION_TYPES="RelWithDebInfo;Asan" -DCMAKE_TOOLCHAIN_FILE=etc/clang-19-toolchain.cmake -B .build -S .
+-- The CXX compiler identification is Clang 19.0.0
+...
+-- Build files have been written to: /path/to/Optional26/.build
+
+# Build.
+$ cmake --build .build --config Asan --target all -- -k 0
+...
+[30/30] Linking CXX executable ... # Note: 30 targets here (including tests).
+
+# Run tests.
+$ ctest --build-config Asan --output-on-failure --test-dir .build
+Internal ctest changing into directory: /path/to/Optional26/.build
+Test project /path/to/Optional26/.build
+...
+100% tests passed, 0 tests failed out of 82
+
+Total Test time (real) =   0.67 sec
 ```
 
-The makefile will use your system compiler, `c++`, if no toolchain name is provided, otherwise it will use the toolchain in the etc/ directory to perform the build. The Ninja multi config generator is used, with configurations for `RelWithDebugInfo`, `Debug`, `Tsan`, and `Asan` configured by default.
+##### Build Production, but Skip Tests
+
+By default, we build and run tests. You can provide `-DBUILD_TESTING=OFF` and completely disable building tests:
+
+```shell
+# Configure build: build production code, skip tests (BUILD_TESTING=OFF).
+$ cmake -G "Ninja Multi-Config" -DCMAKE_CONFIGURATION_TYPES="RelWithDebInfo;Asan" -DCMAKE_TOOLCHAIN_FILE=etc/clang-19-toolchain.cmake -DBUILD_TESTING=OFF -B .build -S .
+-- The CXX compiler identification is Clang 19.0.0
+...
+-- Build files have been written to: /path/to/Optional26/.build
+
+# Build.
+$ cmake --build .build --config Asan --target all -- -k 0
+...
+[15/15] Linking CXX executable ... # Note: 15 targets here (tests were not built).
+
+# Check that tests are not built/installed.
+$ ctest --build-config Asan --output-on-failure --test-dir .build
+Internal ctest changing into directory: /path/to/Beman.Optional26/.build
+Test project /path/to/Beman.Optional26/.build
+No tests were found!!!
+```
 
 ## Papers