add force_openmp optoin

Author: peter-urban

meson.build

@@ -19,9 +19,8 @@ projectnamespace = 'themachinethatgoesping'
 # --- dependencies ---
 
 # openmp (not used in clang-cl / windows)
-if meson.get_compiler('cpp').get_id() == 'clang-cl'
-  omp_dep = declare_dependency()
-else
+omp_dep = declare_dependency()
+if meson.get_compiler('cpp').get_id() != 'clang-cl' or get_option('force_openmp').enabled()
   omp_dep = dependency('openmp')
 endif
 

meson_options.txt

@@ -8,4 +8,5 @@
  option('pydev_install', type : 'feature', value : 'disabled', description : 'On install: Link to python package src directories, rather than installing the souce to hdd.', yield : true)
 
  option('dynamic_boost', type : 'feature', value : 'disabled', description : 'Use dynamic boost libraries instead of static ones', yield : true)
+ option('force_openmp', type : 'feature', value : 'disabled', description : 'Force the use of openmp', yield : true)