Replace custom configure script with Meson build system

Author: HolyWu

GNUmakefile

@@ -159,3 +159,11 @@ i = core.lsmas.LWLibavSource(r'Image.png')
 i = core.fmtc.bitdepth(i, bits=16)
 i = core.retinex.MSRCR(i)
 ```
+
+
+## Compilation
+
+```
+meson build
+ninja -C build
+```

README.md

@@ -0,0 +1,27 @@
+project('Retinex', 'cpp',
+  default_options : ['buildtype=release', 'b_ndebug=if-release', 'cpp_std=c++14'],
+  meson_version : '>=0.48.0',
+  version : '4'
+)
+
+sources = [
+  'source/Gaussian.cpp',
+  'source/MSR.cpp',
+  'source/MSRCP.cpp',
+  'source/MSRCR.cpp',
+  'source/VSPlugin.cpp'
+]
+
+vapoursynth_dep = dependency('vapoursynth').partial_dependency(compile_args : true, includes : true)
+
+if host_machine.cpu_family().startswith('x86')
+  add_project_arguments('-mfpmath=sse', '-msse2', language : 'cpp')
+endif
+
+shared_module('retinex', sources,
+  dependencies : vapoursynth_dep,
+  include_directories : include_directories('include'),
+  install : true,
+  install_dir : join_paths(vapoursynth_dep.get_pkgconfig_variable('libdir'), 'vapoursynth'),
+  gnu_symbol_visibility : 'hidden'
+)