Began porting the mapping system

build-config/magicenum/meson.build

@@ -1,6 +1,9 @@
 magic_enum_include = include_directories('include')
 
-magic_enum_args = []
+# SERiFErrorCode includes values up to 1000; magic_enum defaults to 127.
+# Keep this definition on the public dependency so every translation unit
+# instantiates the same reflection tables.
+magic_enum_args = ['-DMAGIC_ENUM_RANGE_MAX=2000']
 
 if get_option('magic_enum_hash')
     magic_enum_args += '-DMAGIC_ENUM_ENABLE_HASH'
@@ -11,3 +14,4 @@ magic_enum_dep = declare_dependency(
     compile_args: magic_enum_args,
 )
 
+meson.override_dependency('magic_enum', magic_enum_dep)

build-config/mfem/meson.build

@@ -406,11 +406,12 @@ if effective_allow_preinstalled
     endforeach
 
     if system_compatible
-      system_compatible = cpp.compiles(
+      system_compatible = cpp.links(
         '#include <mfem.hpp>\n' +
-        'int main(){return 0;}',
+        '#include <sstream>\n' +
+        'int main(){std::istringstream input; mfem::Mesh mesh(input); return mesh.Dimension();}',
         dependencies: system_candidate_dependencies,
-        name: 'system MFEM public headers are consumable',
+        name: 'system MFEM matches the selected C++ ABI',
       )
     endif
 
@@ -597,6 +598,15 @@ else
     bundle_command += ['--c-link-arg=' + platform_link_arg]
     bundle_command += ['--cxx-link-arg=' + platform_link_arg]
   endforeach
+  # Meson does not include the native-file c_ld/cpp_ld selection in *_link_args.
+  # Carry that selection into the external CMake/Make dependency builds too.
+  linker_flags = {'ld.bfd': '-fuse-ld=bfd', 'ld.gold': '-fuse-ld=gold', 'ld.lld': '-fuse-ld=lld'}
+  if linker_flags.has_key(cc.get_linker_id())
+    bundle_command += ['--c-link-arg=' + linker_flags[cc.get_linker_id()]]
+  endif
+  if linker_flags.has_key(cpp.get_linker_id())
+    bundle_command += ['--cxx-link-arg=' + linker_flags[cpp.get_linker_id()]]
+  endif
   foreach i : range(mfem_feature_names.length())
     bundle_command += [
       '--feature',