Add Meson build system

Author: czgdp1807

meson.build

@@ -0,0 +1,7 @@
+project('pydatastructs', 'cpp',
+       version : '1.0.1-dev',
+       default_options : ['cpp_std=c++17'])
+
+python = import('python').find_installation(pure: false)
+
+subdir('pydatastructs')

pydatastructs/meson.build

@@ -0,0 +1,68 @@
+python = import('python').find_installation(pure: false)
+
+# Install pure python sources
+install_subdir(
+    '.',
+    install_dir: python.get_install_dir(subdir: 'pydatastructs'),
+)
+
+# utils extension modules
+python.extension_module(
+    'pydatastructs.utils._backend.cpp._nodes',
+    'utils/_backend/cpp/nodes.cpp',
+    install: true,
+    subdir: 'pydatastructs/utils'
+)
+python.extension_module(
+    'pydatastructs.utils._backend.cpp._graph_utils',
+    'utils/_backend/cpp/graph_utils.cpp',
+    install: true,
+    subdir: 'pydatastructs/utils'
+)
+
+# linear_data_structures extension modules
+python.extension_module(
+    'pydatastructs.linear_data_structures._backend.cpp._arrays',
+    'linear_data_structures/_backend/cpp/arrays/arrays.cpp',
+    install: true,
+    subdir: 'pydatastructs/linear_data_structures'
+)
+python.extension_module(
+    'pydatastructs.linear_data_structures._backend.cpp._algorithms',
+    'linear_data_structures/_backend/cpp/algorithms/algorithms.cpp',
+    install: true,
+    subdir: 'pydatastructs/linear_data_structures'
+)
+
+# miscellaneous_data_structures extension module
+python.extension_module(
+    'pydatastructs.miscellaneous_data_structures._backend.cpp._stack',
+    'miscellaneous_data_structures/_backend/cpp/stack/stack.cpp',
+    install: true,
+    subdir: 'pydatastructs/miscellaneous_data_structures'
+)
+
+# trees extension module
+python.extension_module(
+    'pydatastructs.trees._backend.cpp._trees',
+    'trees/_backend/cpp/trees.cpp',
+    install: true,
+    subdir: 'pydatastructs/trees'
+)
+
+# graphs extension modules
+py_include = include_directories('utils/_backend/cpp')
+python.extension_module(
+    'pydatastructs.graphs._backend.cpp._graph',
+    'graphs/_backend/cpp/graph.cpp',
+    include_directories: py_include,
+    install: true,
+    subdir: 'pydatastructs/graphs'
+)
+python.extension_module(
+    'pydatastructs.graphs._backend.cpp._algorithms',
+    'graphs/_backend/cpp/algorithms.cpp',
+    include_directories: py_include,
+    install: true,
+    subdir: 'pydatastructs/graphs'
+)

pyproject.toml

@@ -0,0 +1,3 @@
+[build-system]
+requires = ["meson-python"]
+build-backend = "mesonpy"