add basic meson.build file

meson.build

@@ -0,0 +1,31 @@
+# configure and build with: meson build && ninja -C build
+project('fortuna', ['cpp'], license: 'GPL', default_options: ['cpp_std=c++20'])
+
+cc = meson.get_compiler('cpp')
+
+fmt_dep = cc.find_library('fmt', required : true)
+cryptopp_dep = cc.find_library('cryptopp', required : true)
+thread_dep = dependency('threads')
+
+sources = [
+  'main.cpp',
+  'fortuna.cpp',
+  'generator.cpp',
+  'accumulator.cpp',
+  'pool.cpp',
+  'seed_file_management.cpp',
+  'urandom_entropy_src.cpp',
+  'do_task.cpp',
+  ]
+
+cc_args = ['-std=c++20']
+incdir = include_directories('.')
+
+
+executable('fortuna', sources,
+  dependencies : [thread_dep, fmt_dep, cryptopp_dep],
+  include_directories: incdir,
+  cpp_args: cc_args)
+
+# [binaries]
+cpp_ld = 'lld'