build: initialize meson build system

.github/workflows/tests.yml

@@ -10,7 +10,7 @@ jobs:
     name: "AppleClang (MacOS ${{ matrix.macos }}, C++${{ matrix.standard }})"
     runs-on: macos-${{ matrix.macos }}
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: c++ -v
       - run: make CXX=c++ CXX_STANDARD=2a
         if: ${{ matrix.standard == '20' }}
@@ -19,33 +19,45 @@ jobs:
   gcc:
     strategy:
       matrix:
-        gcc: [8, 9, 10, 11, 13]
+        gcc: [9, 10, 11, 13]
         standard: [17, 20]
       fail-fast: false
     name: "GCC ${{ matrix.gcc }} (C++${{ matrix.standard }})"
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: "Install GCC"
         uses: egor-tensin/setup-gcc@v1
         with:
           version: ${{ matrix.gcc }}
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: c++ -v
       - run: make CXX=c++ CXX_STANDARD=2a
         if: ${{ matrix.standard == '20' }}
-      - run: make CXX=c++ CXX_STANDARD=17
-        if: ${{ matrix.gcc < '9' && matrix.standard == '17' }}
       - run: make CXX=c++ CXX_STANDARD=17 CXXFLAGS=-DCTRE_ENABLE_LITERALS PEDANTIC=""
-        if: ${{ matrix.gcc >= '9' && matrix.standard == '17' }}
+        if: ${{ matrix.standard == '17' }}
+  meson:
+    name: "Meson package test"
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - run: pipx install meson
+      - run: meson setup build --prefix=/usr
+      - run: sudo ninja -C build install
+      - name: Run compilation tests
+        run: |
+          # shellcheck disable=SC2046
+          c++ $(pkg-config --cflags ctre) -fsyntax-only -std=c++20 tests/ci.cpp
+          # shellcheck disable=SC2046
+          c++ $(pkg-config --cflags ctre) -fsyntax-only -std=c++20 tests/_unicode.cpp
   clang:
     strategy:
       matrix:
-        clang: [7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17]
+        clang: [11, 12, 13, 14, 15, 16, 17]
         stdlib: ["libc++", "libstdc++"]
         standard: [17, 20]
       fail-fast: false
     name: "Clang ${{ matrix.clang }} (C++${{ matrix.standard }}, ${{ matrix.stdlib }})"
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-22.04
     steps:
       - name: "Install Clang"
         uses: egor-tensin/setup-clang@v1
@@ -54,7 +66,7 @@ jobs:
       - name: "Install libc++"
         if: ${{ matrix.stdlib == 'libc++' }}
         run: sudo apt-get install libc++abi-${{ matrix.clang }}-dev libc++1-${{ matrix.clang }} libc++-${{ matrix.clang }}-dev
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - run: c++ -v
       - run: make CXX=c++ CXX_STANDARD=2a CXXFLAGS=-stdlib=${{ matrix.stdlib }}
         if: ${{ matrix.standard == '20' }}
@@ -74,7 +86,7 @@ jobs:
           toolset: ${{ matrix.version }}
       - name: "Install Ninja & CMake"
         run: choco install ninja cmake
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: "Configure"
         run: cmake . -G Ninja -B build -DCTRE_BUILD_TESTS=ON -DCTRE_CXX_STANDARD=20
       - name: "Build"

include/meson.build

@@ -0,0 +1,59 @@
+inc = include_directories('.')
+
+hdrs = files(
+  'ctll.hpp',
+  'ctll/actions.hpp',
+  'ctll/fixed_string.hpp',
+  'ctll/grammars.hpp',
+  'ctll/list.hpp',
+  'ctll/parser.hpp',
+  'ctll/utilities.hpp',
+  'ctre-unicode.hpp',
+  'ctre.hpp',
+  'ctre/actions/asserts.inc.hpp',
+  'ctre/actions/atomic_group.inc.hpp',
+  'ctre/actions/backreference.inc.hpp',
+  'ctre/actions/boundaries.inc.hpp',
+  'ctre/actions/capture.inc.hpp',
+  'ctre/actions/characters.inc.hpp',
+  'ctre/actions/class.inc.hpp',
+  'ctre/actions/fusion.inc.hpp',
+  'ctre/actions/hexdec.inc.hpp',
+  'ctre/actions/look.inc.hpp',
+  'ctre/actions/mode.inc.hpp',
+  'ctre/actions/named_class.inc.hpp',
+  'ctre/actions/options.inc.hpp',
+  'ctre/actions/properties.inc.hpp',
+  'ctre/actions/repeat.inc.hpp',
+  'ctre/actions/sequence.inc.hpp',
+  'ctre/actions/set.inc.hpp',
+  'ctre/atoms.hpp',
+  'ctre/atoms_characters.hpp',
+  'ctre/atoms_unicode.hpp',
+  'ctre/evaluation.hpp',
+  'ctre/find_captures.hpp',
+  'ctre/first.hpp',
+  'ctre/flags_and_modes.hpp',
+  'ctre/functions.hpp',
+  'ctre/id.hpp',
+  'ctre/iterators.hpp',
+  'ctre/literals.hpp',
+  'ctre/operators.hpp',
+  'ctre/pcre.hpp',
+  'ctre/pcre_actions.hpp',
+  'ctre/range.hpp',
+  'ctre/return_type.hpp',
+  'ctre/rotate.hpp',
+  'ctre/starts_with_anchor.hpp',
+  'ctre/utf8.hpp',
+  'ctre/utility.hpp',
+  'ctre/wrapper.hpp',
+  'unicode-db.hpp',
+  'unicode-db/unicode-db.hpp',
+  'unicode-db/unicode_interface.hpp',
+)
+
+install_headers(
+  hdrs,
+  preserve_path: true,
+)

meson.build

@@ -0,0 +1,25 @@
+project(
+  'ctre',
+  'cpp',
+  version: '3.9.0',
+  license: 'Apache-2.0',
+  default_options: [
+    meson.version().version_compare('>= 1.3.0') ? 'cpp_std=gnu++20,gnu++17,vc++latest,c++20,c++17' : 'cpp_std=c++20',
+  ],
+  meson_version: '>= 0.63',
+)
+
+subdir('include')
+
+ctre_dep = declare_dependency(
+  include_directories: inc,
+  sources: hdrs,
+)
+
+meson.override_dependency('ctre', ctre_dep)
+
+pkgconf = import('pkgconfig')
+pkgconf.generate(
+  name: 'ctre',
+  description: 'Fast compile-time regular expressions with support for matching/searching/capturing during compile-time or runtime.',
+)