Use pragma to disable spurious MSVC warning...

...rather than doing it at the CMake level

module/CMakeLists.txt

@@ -17,10 +17,3 @@ target_sources(flux-mod PUBLIC
 target_link_libraries(flux-mod PRIVATE flux)
 target_compile_features(flux-mod PUBLIC $<IF:$<CXX_COMPILER_ID:MSVC>,cxx_std_23,cxx_std_20>)
 set_target_properties(flux-mod PROPERTIES CXX_EXTENSIONS Off)
-
-# Squish MSVC warning when building the module, hopefully we're not actually doing anything wrong
-if(MSVC)
-    target_compile_options(flux-mod PRIVATE
-        /wd5244 # '#include <flux.hpp>' in the purview of module 'flux' appears erroneous
-    )
-endif()

module/flux.cpp

@@ -33,6 +33,13 @@ export module flux;
 
 #define FLUX_MODULE_INTERFACE
 
+// Silence Clang and MSVC warnings about #include inside a module's purview
+
+#ifdef _MSC_VER
+#pragma warning(push)
+#pragma warning(disable: 5244)
+#endif
+
 #ifdef __clang__
 #pragma clang diagnostic push
 #if __has_warning("-Winclude-angled-in-module-purview")
@@ -45,3 +52,7 @@ export module flux;
 #ifdef __clang__
 #pragma clang diagnostic pop
 #endif
+
+#ifdef _MSC_VER
+#pragma warning(pop)
+#endif

test/CMakeLists.txt

@@ -112,13 +112,6 @@ if(${CMAKE_VERSION} VERSION_GREATER_EQUAL "3.28.0")
 
         target_compile_definitions(test-flux PRIVATE -DUSE_MODULES)
         set_target_properties(test-flux PROPERTIES CXX_SCAN_FOR_MODULES On)
-
-        # Squish MSVC warning when building the module, hopefully we're not actually doing anything wrong
-        if(MSVC)
-            target_compile_options(test-flux PRIVATE
-                    /wd5244 # '#include <flux.hpp>' in the purview of module 'flux' appears erroneous
-            )
-        endif()
     endif()
 endif()