diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index 438f7f35d4..9ee4758738 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -44,6 +44,7 @@ add_library( singletop STATIC EXCLUDE_FROM_ALL
 # as APIEXPORT
 set( KICOMMON_SRCS
     exceptions.cpp
+    locale_io.cpp
     richio.cpp
     string_utils.cpp
     )
@@ -54,6 +55,7 @@ add_library( kicommon SHARED
 
 target_link_libraries( kicommon
     core
+    kimath
     kiplatform
     fmt::fmt
     ${wxWidgets_LIBRARIES}
@@ -408,7 +410,6 @@ set( COMMON_SRCS
     lib_table_grid_tricks.cpp
     lib_tree_model.cpp
     lib_tree_model_adapter.cpp
-    locale_io.cpp
     lset.cpp
     marker_base.cpp
     markup_parser.cpp
diff --git a/common/locale_io.cpp b/common/locale_io.cpp
index 931b22e560..9b2a287cb6 100644
--- a/common/locale_io.cpp
+++ b/common/locale_io.cpp
@@ -47,14 +47,6 @@
 //
 // So use wxLocale on Windows and setlocale on unix
 
-
-// set USE_WXLOCALE 0 to use setlocale, 1 to use wxLocale:
-#if defined( _WIN32 )
-#define USE_WXLOCALE 1
-#else
-#define USE_WXLOCALE 0
-#endif
-
 // On Windows, when using setlocale, a wx alert is generated
 // in some cases (reading a bitmap for instance)
 // So we disable alerts during the time a file is read or written
@@ -73,12 +65,16 @@ void KiAssertFilter( const wxString &file, int line,
 #endif
 #endif
 
-std::atomic<unsigned int> LOCALE_IO::m_c_count( 0 );
+// allow for nesting of LOCALE_IO instantiations
+static std::atomic<unsigned int> locale_count( 0 );
 
-LOCALE_IO::LOCALE_IO() : m_wxLocale( nullptr )
+LOCALE_IO::LOCALE_IO()
+#if USE_WXLOCALE
+    : m_wxLocale( nullptr )
+#endif
 {
     // use thread safe, atomic operation
-    if( m_c_count++ == 0 )
+    if( locale_count++ == 0 )
     {
 #if USE_WXLOCALE
         #define C_LANG "C"
@@ -100,7 +96,7 @@ LOCALE_IO::LOCALE_IO() : m_wxLocale( nullptr )
 LOCALE_IO::~LOCALE_IO()
 {
     // use thread safe, atomic operation
-    if( --m_c_count == 0 )
+    if( --locale_count == 0 )
     {
         // revert to the user locale
 #if USE_WXLOCALE
diff --git a/include/locale_io.h b/include/locale_io.h
index 431830076c..80d07d5ec6 100644
--- a/include/locale_io.h
+++ b/include/locale_io.h
@@ -24,9 +24,17 @@
 #ifndef LOCALE_IO_H
 #define LOCALE_IO_H
 
+#include <kicommon.h>
 #include <atomic>
 #include <string>
 
+// set USE_WXLOCALE 0 to use setlocale, 1 to use wxLocale:
+#if defined( _WIN32 )
+#define USE_WXLOCALE 1
+#else
+#define USE_WXLOCALE 0
+#endif
+
 class wxLocale;
 
 /**
@@ -37,25 +45,20 @@ class wxLocale;
  * point  numbers.  The destructor insures that the default locale is restored whether an
  * exception is thrown or not.
  */
-class LOCALE_IO
+class KICOMMON_API LOCALE_IO
 {
 public:
     LOCALE_IO();
     ~LOCALE_IO();
 
 private:
-    // allow for nesting of LOCALE_IO instantiations
-    static std::atomic<unsigned int> m_c_count;
-
+#if USE_WXLOCALE
+    wxLocale* m_wxLocale;
+#else
     // The locale in use before switching to the "C" locale
     // (the locale can be set by user, and is not always the system locale)
     std::string m_user_locale;
-    #ifndef __clang__
-    // [[maybe_unused]] attribute is ignored by Gcc but generates a warning.
-    wxLocale*   m_wxLocale;
-    #else
-    [[maybe_unused]] wxLocale*   m_wxLocale;
-    #endif
+#endif
 };
 
 #endif