Add initial Meson build system

meson.build

@@ -0,0 +1,87 @@
+project('Little-CMS', 'c',
+  version: '2.12',
+  meson_version: '>=0.48.0',
+)
+
+library_version = '2.0.12'
+
+cc = meson.get_compiler('c')
+
+lcms2_srcs = [
+  'src/cmsalpha.c',
+  'src/cmscgats.c',
+  'src/cmserr.c',
+  'src/cmsgmt.c',
+  'src/cmsintrp.c',
+  'src/cmsio1.c',
+  'src/cmsmd5.c',
+  'src/cmsnamed.c',
+  'src/cmspack.c',
+  'src/cmsplugin.c',
+  'src/cmssamp.c',
+  'src/cmstypes.c',
+  'src/cmswtpnt.c',
+  'src/cmscam02.c',
+  'src/cmscnvrt.c',
+  'src/cmsgamma.c',
+  'src/cmshalf.c',
+  'src/cmsio0.c',
+  'src/cmslut.c',
+  'src/cmsmtrx.c',
+  'src/cmsopt.c',
+  'src/cmspcs.c',
+  'src/cmsps2.c',
+  'src/cmssm.c',
+  'src/cmsvirt.c',
+  'src/cmsxform.c',
+]
+
+install_headers([
+  'include/lcms2.h',
+  'include/lcms2_plugin.h'
+])
+
+inc_dirs = include_directories('include')
+
+deps = [
+  cc.find_library('m', required: false),
+  dependency('threads'),
+]
+
+cargs = ['-DHasTHREADS=1']
+
+# Check for threadsafe variants of gmtime
+if cc.has_function('gmtime_r', prefix: '#include <time.h>')
+  cargs += '-DHAVE_GMTIME_R=1'
+elif cc.has_function('gmtime_s', prefix: '#include <time.h>')
+  cargs += '-DHAVE_GMTIME_S=1'
+endif
+
+if cc.has_function_attribute('visibility:hidden')
+  cargs +='-DHAVE_FUNC_ATTRIBUTE_VISIBILITY=1'
+elif cc.get_id() == 'msvc'
+  cargs += '-DCMS_DLL_BUILD=1'
+endif
+
+if host_machine.system() == 'windows'
+  win = import('windows')
+  lcms2_srcs += win.compile_resources('Projects/VC2019/lcms2.rc')
+endif
+
+liblcms2_lib = library('lcms2', lcms2_srcs,
+  include_directories : inc_dirs,
+  gnu_symbol_visibility: 'hidden',
+  dependencies: deps,
+  c_args: cargs,
+  version: library_version,
+  vs_module_defs: 'src/lcms2.def',
+  install: true,
+)
+
+liblcms2_dep = declare_dependency(
+  link_with : liblcms2_lib,
+  include_directories : inc_dirs
+)
+
+pkg = import('pkgconfig')
+pkg.generate(liblcms2_lib)