Adding root meson.build file.

meson.build

+###################################################################################
+#                                                                                 #
+# NAME: meson.build                                                               #
+#                                                                                 #
+# AUTHOR: Mike Karlesky, Mark VanderVoord, Greg Williams.                         #
+# WRITTEN BY: Michael Brockus.                                                    #
+#                                                                                 #
+# License: MIT                                                                    #
+#                                                                                 #
+###################################################################################
+
+
+
+project('unity', 'c',
+    license         : 'MIT',
+    meson_version   : '>=0.50.0',
+    default_options : 
+    [ 
+        'werror=true',
+        'optimization=3', 
+        'warning_level=3', 
+        'b_sanitize=address,undefined', 
+        'b_lto=true', 
+        'b_lundef=true'
+    ])
+cc = meson.get_compiler('c')
+args_for_langs = 'c'
+
+if cc.get_id() == 'clang'
+    add_project_arguments(
+        '-Wweak-vtables', 
+        '-Wexit-time-destructors',
+        '-Wglobal-constructors', 
+        '-Wmissing-noreturn', language: args_for_langs)
+endif
+
+if cc.get_argument_syntax() == 'gcc'
+    add_project_arguments(
+        '-Wall', 
+        '-Wextra', 
+        '-Wunreachable-code', 
+        '-Wmissing-declarations',
+        '-Wmissing-prototypes',
+        '-Wredundant-decls',
+        '-Wundef',
+        '-Wwrite-strings',
+        '-Wformat',
+        '-Wformat-nonliteral',
+        '-Wformat-security',
+        '-Wold-style-definition',
+        '-Winit-self',
+        '-Wmissing-include-dirs',
+        '-Waddress',
+        '-Waggregate-return',
+        '-Wno-multichar',
+        '-Wdeclaration-after-statement',
+        '-Wvla',
+        '-Wpointer-arith',language: args_for_langs)
+endif
+
+if cc.get_id() == 'msvc'
+    add_project_arguments(
+        '/W4', 
+        '/w44265', 
+        '/w44061', 
+        '/w44062', 
+        '/wd4018', # implicit signed/unsigned conversion
+        '/wd4146', # unary minus on unsigned (beware INT_MIN)
+        '/wd4244', # lossy type conversion (e.g. double -> int)
+        '/wd4305', # truncating type conversion (e.g. double -> float)
+        mesno.get_supported_arguments(['/utf-8']), language: args_for_langs)
+endif
+
+subdir('src')
+
+unity_dep = declare_dependency(
+    version: meson.project_version(),
+    link_with: unity_lib,
+    include_directories: unity_dir)