Switch to bazel as main buildsystem

.bazelrc

@@ -0,0 +1,49 @@
+# Make Bazel print out all options from rc files
+common --announce_rc
+
+# Verbose test output
+common --test_summary=detailed
+# Stream test results to stdout
+common --test_output=streamed
+
+# We use 23 standard
+build:linux --cxxopt=-std=c++23
+# Include: source directory
+build:linux --cxxopt=-iquote --cxxopt=src
+# Essential warnings
+build:linux --cxxopt=-Wall
+# Extra warnings
+build:linux --cxxopt=-Wextra
+# TODO: document the rest
+build:linux --cxxopt=-Wno-pointer-arith
+build:linux --cxxopt=-Wno-unused-const-variable
+build:linux --cxxopt=-Wno-missing-field-initializers
+build:linux --cxxopt=-Wno-stringop-overflow
+
+# LTO, see: https://gcc.gnu.org/wiki/LinkTimeOptimization
+# TODO: make conan build all dependencies with LTO - right now triggers "final link failed: bad value" errors
+# build:linux --cxxopt=-flto
+# build:linux --linkopt=-flto
+
+# Optimize for native (host) architecture
+# Be warned - might break distribution builds
+build:linux-fragile --config=linux
+build:linux-fragile --cxxopt=-march=native
+
+# Treat warnings as errors should be enabled optionally
+build:linux-strict --config=linux
+build:linux-strict --cxxopt=-Werror
+
+# --- Build configurations ---
+# Linux, Debug
+build:linux-dbg --compilation_mode dbg
+build:linux-dbg --config=linux-fragile
+build:linux-dbg --cxxopt=-ggdb3
+# Linux, Release
+build:linux-opt --compilation_mode opt
+build:linux-opt --config=linux
+build:linux-opt --cxxopt=-O3
+# ----------------------------
+
+# Distro-specific configurations
+# ...

.bazelversion

@@ -0,0 +1,4 @@
+8.2.1
+# The first line of this file is used by Bazelisk and Bazel to be sure
+# the right version of Bazel is used to build and test this repo.
+# This also defines which version is used on CI.

.clang-tidy

@@ -0,0 +1,33 @@
+Checks:          'clang-diagnostic-*,clang-analyzer-*,cppcoreguidelines-*,modernize-*,-modernize-use-trailing-return-type'
+HeaderFilterRegex: ''
+AnalyzeTemporaryDtors: false
+FormatStyle:     google
+CheckOptions:
+  - key:             cert-dcl16-c.NewSuffixes
+    value:           'L;LL;LU;LLU'
+  - key:             cert-oop54-cpp.WarnOnlyIfThisHasSuspiciousField
+    value:           '0'
+  - key:             cppcoreguidelines-explicit-virtual-functions.IgnoreDestructors
+    value:           '1'
+  - key:             cppcoreguidelines-non-private-member-variables-in-classes.IgnoreClassesWithAllMemberVariablesBeingPublic
+    value:           '1'
+  - key:             google-readability-braces-around-statements.ShortStatementLines
+    value:           '1'
+  - key:             google-readability-function-size.StatementThreshold
+    value:           '800'
+  - key:             google-readability-namespace-comments.ShortNamespaceLines
+    value:           '10'
+  - key:             google-readability-namespace-comments.SpacesBeforeComments
+    value:           '2'
+  - key:             modernize-loop-convert.MaxCopySize
+    value:           '16'
+  - key:             modernize-loop-convert.MinConfidence
+    value:           reasonable
+  - key:             modernize-loop-convert.NamingStyle
+    value:           CamelCase
+  - key:             modernize-pass-by-value.IncludeStyle
+    value:           llvm
+  - key:             modernize-replace-auto-ptr.IncludeStyle
+    value:           llvm
+  - key:             modernize-use-nullptr.NullMacros
+    value:           'NULL'

.github/workflows/distro-ci.yml

@@ -11,7 +11,10 @@ permissions:
 jobs:
   build:
     runs-on: ubuntu-latest
-    container: hyperwin/hcpu-ci:${{ matrix.config.tag }}
+    container:
+      image: hyperwin/hcpu-ci:${{ matrix.config.tag }}
+      # see https://github.com/bazelbuild/bazel/issues/13823
+      options: --init
     name: "Build on ${{matrix.config.name}}"
     strategy:
       matrix:
@@ -26,13 +29,13 @@ jobs:
             name: Arch Linux
           - tag: gentoo-glibc
             name: Gentoo GLibc
-          - tag: gentoo-musl
-            name: Gentoo Musl
-          - tag: alpine
-            name: Alpine
+#          - tag: gentoo-musl
+#            name: Gentoo Musl
+#          - tag: alpine
+#            name: Alpine
           - tag: ubuntu
             name: Ubuntu
-    
+
     steps:
       - run: |
           set -e
@@ -43,11 +46,6 @@ jobs:
           git clone https://github.com/${{ github.event.pull_request.head.repo.full_name }}.git && cd HyperCPU
           git checkout ${{ github.event.pull_request.head.sha }}
           git submodule update --init --recursive
-
-          python3 scripts/build.py -icb             \
-            --config Release                        \
-            --config Debug                          \
-            --build-dir build                       \
-            -D CMAKE_CXX_COMPILER:STRING=g++        \
-            -D CMAKE_CXX_COMPILER:STRING=gcc        \
-            --profiles-detection
+
+          conan profile detect && conan install . --build=cmake --build=missing
+          bazelisk build //src/... //tests/... --config=linux-opt

.github/workflows/run-tests-feature-branch.yml

@@ -6,37 +6,28 @@ on:
 jobs:
   testing:
     runs-on: ubuntu-latest
-    container: hyperwin/hcpu-ci:debian-unstable
+    container:
+      image: hyperwin/hcpu-ci:debian-unstable
+      # see https://github.com/bazelbuild/bazel/issues/13823
+      options: --init
     if: (github.ref != 'refs/heads/master' && github.ref != 'refs/heads/dev') || !contains(github.event.head_commit.message, '[ci skip]')
 
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
         with:
-          submodules: 'true'
-      
-      - name: Build and test with GCC on Release profile
+          submodules: "true"
+
+      - name: Install conan dependecies
         run: |
-          python3 scripts/build.py -icb             \
-            --config Release                        \
-            --build-dir build                       \
-            -D CMAKE_CXX_COMPILER:STRING=g++        \
-            -D CMAKE_C_COMPILER:STRING=gcc          \
-            --profiles-detection
-          cd build/Release && ctest -V && cd ../..
-          python3 scripts/build.py -r --config Release --build-dir build
-
-      - name: Build and test with LLVM on Release profile
+          conan profile detect && conan install . --build=missing
+
+      - name: Build and test with GCC on Release profile
         run: |
-          python3 scripts/build.py -icb             \
-            --config Release                        \
-            --build-dir build                       \
-            -D CMAKE_CXX_COMPILER:STRING=clang++-19 \
-            -D CMAKE_C_COMPILER:STRING=clang-19     \
-            --profiles-detection
-          cd build/Release && ctest -V && cd ../..
-          python3 scripts/build.py -r --config Release --build-dir build
+          bazelisk test //src/... //tests/... --config=linux-dbg --compiler=gcc
+          bazelisk clean --expunge
 
-      - name: Cleanup (Conan cache + leftovers in build)
+      - name: Build and test with LLVM on Release profile
         run: |
-          rm -r build/
+          bazelisk test //src/... //tests/... --config=linux-dbg --compiler=clang
+          bazelisk clean --expunge

.github/workflows/testing.yml

@@ -8,59 +8,38 @@ on:
 jobs:
   testing:
     runs-on: ubuntu-latest
-    container: hyperwin/hcpu-ci:debian-unstable
+    container:
+      image: hyperwin/hcpu-ci:debian-unstable
+      # see https://github.com/bazelbuild/bazel/issues/13823
+      options: --init
     name: Run full test suite
 
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
         with:
-          submodules: 'true'
-
+          submodules: "true"
+
+      - name: Install conan dependecies
+        run: |
+          conan profile detect && conan install . --build=missing
+
       - name: Build and test with GCC on Debug profile
         run: |
-          python3 scripts/build.py -icb             \
-            --config Debug                          \
-            --build-dir build                       \
-            -D CMAKE_CXX_COMPILER:STRING=g++        \
-            -D CMAKE_C_COMPILER:STRING=gcc          \
-            --profiles-detection
-          cd build/Debug && ctest -V && cd ../..
-          python3 scripts/build.py -r --config Debug --build-dir build
+          bazelisk test //src/... //tests/... --config=linux-dbg --compiler=gcc
+          bazelisk clean --expunge
 
       - name: Build and test with GCC on Release profile
         run: |
-          python3 scripts/build.py -icb             \
-            --config Release                        \
-            --build-dir build                       \
-            -D CMAKE_CXX_COMPILER:STRING=g++        \
-            -D CMAKE_C_COMPILER:STRING=gcc          \
-            --profiles-detection
-          cd build/Release && ctest -V && cd ../..
-          python3 scripts/build.py -r --config Release --build-dir build
+          bazelisk test //src/... //tests/... --config=linux-opt --compiler=gcc
+          bazelisk clean --expunge
 
       - name: Build and test with LLVM on Debug profile
         run: |
-          python3 scripts/build.py -icb             \
-            --config Debug                          \
-            --build-dir build                       \
-            -D CMAKE_CXX_COMPILER:STRING=clang++-19 \
-            -D CMAKE_C_COMPILER:STRING=clang-19     \
-            --profiles-detection
-          cd build/Debug && ctest -V && cd ../..
-          python3 scripts/build.py -r --config Debug --build-dir build
+          bazelisk test //src/... //tests/... --config=linux-dbg --compiler=clang
+          bazelisk clean --expunge
 
       - name: Build and test with LLVM on Release profile
         run: |
-          python3 scripts/build.py -icb             \
-            --config Release                        \
-            --build-dir build                       \
-            -D CMAKE_CXX_COMPILER:STRING=clang++-19 \
-            -D CMAKE_C_COMPILER:STRING=clang-19     \
-            --profiles-detection
-          cd build/Release && ctest -V && cd ../..
-          python3 scripts/build.py -r --config Release --build-dir build
-
-      - name: Cleanup (Conan cache + leftovers in build)
-        run: |
-          rm -r build/
+          bazelisk test //src/... //tests/... --config=linux-opt --compiler=clang
+          bazelisk clean --expunge

.github/workflows/version-increment.yml

@@ -8,24 +8,26 @@ on:
 jobs:
   versioning-patch-increment:
     runs-on: ubuntu-latest
-    container: hyperwin/hcpu-ci:debian-unstable
+    container:
+      image: hyperwin/hcpu-ci:debian-unstable
+      options: --user root
     if: "contains(github.event.head_commit.message, '[ci patch inc]')"
     permissions:
       contents: write
-    
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
         with:
-          fetch-depth: '0'
+          fetch-depth: "0"
 
       - name: Setup git user
         uses: fregante/setup-git-user@v1
 
-      - name: Increment version
+      - name: Increment version (patch)
         run: |
-          scripts/increment_patch.sh
-        
+          tools/increment_version.py --increment patch
+
       - name: Push changes to master branch
         run: |
           git config --global --add safe.directory '*'
@@ -39,24 +41,23 @@ jobs:
     if: "contains(github.event.head_commit.message, '[ci minor inc]')"
     permissions:
       contents: write
-    
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
         with:
-          fetch-depth: '0'
+          fetch-depth: "0"
 
       - name: Setup git user
         uses: fregante/setup-git-user@v1
 
-      - name: Increment version
+      - name: Increment version (minor)
         run: |
-          scripts/increment_minor.sh
-        
+          tools/increment_version.py --increment minor
+
       - name: Push changes to master branch
         run: |
           git config --global --add safe.directory '*'
           git add .
           git commit -m "[auto]: Increment minor version"
           git push origin master
-

.gitignore

@@ -90,4 +90,15 @@ CMakeUserPresets*
 
 # Distribution packages
 dist/*
+!dist/BUILD.bazel
 !dist/CMakeLists.txt
+
+# Bazel stuff
+*.lock
+
+# Conan toolchain generated for Bazel
+conan/
+
+# Bazel builds with four directories, see for info:
+# https://bazel.build/remote/output-directories
+bazel-*

.gitmodules

@@ -1,6 +1,3 @@
 [submodule "dist/HPool"]
 	path = dist/HPool
 	url = https://github.com/randommfs/HPool
-[submodule "dist/libunwind"]
-	path = dist/libunwind
-	url = https://github.com/libunwind/libunwind

BUILD.bazel

@@ -0,0 +1,41 @@
+"Top level build configuration, use for tooling only"
+
+load("@aspect_rules_lint//format:defs.bzl", "format_multirun")
+load("@hedron_compile_commands//:refresh_compile_commands.bzl", "refresh_compile_commands")
+
+package(
+    default_visibility = [
+        "//visibility:private",
+    ],
+)
+
+config_setting(
+    name = "linux",
+    constraint_values = ["@platforms//os:linux"],
+)
+
+refresh_compile_commands(
+    name = "refresh_compile_commands",
+    targets = {
+        "//src/...": "--config=linux-dbg",
+        "//tests/...": "--config=linux-dbg",
+    },
+    # I hope they will support this at some point
+    # targets = select(
+    #     {
+    #         ':linux': {
+    #             '//src/...': '--config=linux-dbg',
+    #             '//tests/...': '--config=linux-dbg'
+    #         }
+    #     },
+    #     no_match_error = 'Could not determine host OS toolchain flags, running this target is pointless'
+    # )
+)
+
+format_multirun(
+    name = "format",
+    cc = "@llvm_toolchain//:bin/clang-format",
+    print_command = True,
+    python = "@aspect_rules_lint//format:ruff",
+    starlark = "@buildifier_prebuilt//:buildifier",
+)