fix preprocessor defines warning for self-contained header test; add -Wall for this check. Closes #294 (#296)

Author: slayoo

CMakeLists.txt

@@ -496,19 +496,29 @@ if (NOT "${CMAKE_REQUIRED_INCLUDES}" STREQUAL "")
 endif()
 foreach(file ${PyPartMC_headers})
   set(CMAKE_REQUIRED_INCLUDES "${PYPARTMC_INCLUDE_DIRS};${pybind11_INCLUDE_DIRS}")
+  set(CMAKE_REQUIRED_FLAGS "-Werror")
+  string(REGEX REPLACE "[\-./:]" "_" file_var ${file})
   check_cxx_source_compiles("
       // https://github.com/nlohmann/json/issues/1408
-      #define HAVE_SNPRINTF 
+      #if defined(_WIN32) || defined(_WIN64)
+      #  define HAVE_SNPRINTF
+      #endif
       #include \"${file}\"
       int main() { return 0;}
     "
-    _header_self_contained_${file}
+    _header_self_contained_${file_var}
   )
   unset(CMAKE_REQUIRED_INCLUDES)
-  if (NOT _header_self_contained_${file})
+  unset(CMAKE_REQUIRED_FLAGS)
+  if (NOT _header_self_contained_${file_var})
     message(SEND_ERROR "non-self-contained header: ${file}")
-    file(READ "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log" tmp)
+    if (${CMAKE_VERSION} VERSION_LESS "3.26.0")
+      file(READ "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeError.log" tmp)
+    else()
+      file(READ "${CMAKE_BINARY_DIR}/CMakeFiles/CMakeConfigureLog.yaml" tmp)
+    endif()
     message(FATAL_ERROR ${tmp})
   endif()
+  unset(file_var)
 endforeach()