Meson instead of Make

meson.build

@@ -0,0 +1,34 @@
+project(
+    'basen',
+    'cpp',
+    version: '1.1.1',
+    default_options: {
+        'cpp_std': 'c++20',
+        'cpp_args': '-Wall -Wextra -Werror -Wno-unused-result',
+    },
+    license: 'LGPL-3.0-only',
+    license_files: 'LICENSE',
+    meson_version: '>=1.10.0',
+)
+
+configure_file(
+    input: 'config.hpp.in',
+    output: 'config.hpp',
+    configuration: {'ver_str': meson.project_version()},
+)
+
+include = include_directories('.', 'include')
+
+subdir('include')
+subdir('src')
+
+basen_dep = declare_dependency(
+    link_with: libbasen,
+    include_directories: include,
+)
+
+if get_option('buildtype') == 'debug'
+  subdir('test')
+endif
+
+subdir('tools')