Index: ext/libicpf/src/libicpf/str_help.cpp
===================================================================
diff -u -N -rb337c059691a6940b52a86388ff427c734be8eb6 -r21847bff9bc6958b98f3fe8bac319590b790fc0f
--- ext/libicpf/src/libicpf/str_help.cpp	(.../str_help.cpp)	(revision b337c059691a6940b52a86388ff427c734be8eb6)
+++ ext/libicpf/src/libicpf/str_help.cpp	(.../str_help.cpp)	(revision 21847bff9bc6958b98f3fe8bac319590b790fc0f)
@@ -28,7 +28,7 @@
  * \param[in] ch - character to check
  * \return True if the character is a whitespace one, false otherwise.
  */
-LIBICPF_API bool is_whitespace(char_t ch)
+bool string_tool::is_whitespace(char_t ch)
 {
 	return ((ch >= 0x09) && (ch <= 0x0d)) || (ch == 0x20);
 }