gendef.cc: Skip symbols implemented inline

fanc999-1 · kjellahl · commit de6e8150fa07 · 2020-06-19T12:03:43.000+02:00
Like in the case of gtkmm, some symbols were implemented inline in the CRT on
Visual Studio 2015+ (UCRT), so we don't want to put them in our .def file,
otherwise linking will fail.
diff --git a/MSVC_NMake/gendef/gendef.cc b/MSVC_NMake/gendef/gendef.cc
@@ -76,11 +76,25 @@ int main(int argc,char** argv)
 			  while(*e != ' ' && *e != '\t' && *e != '\0' && *e!= '\n') e++;
 			  *e = '\0';
 			
+#if (_MSC_VER >= 1900)
+			  /* Filter out these symbols as they are done inline in the
+			   * compiler-shipped headers, so that things can link properly on
+			   * later Visual Studio versions.  Unfortunately we can't just
+			   * link to legacy_stdio_definitions.lib, so this list below may
+			   * continue to grow.
+			   */
+			  if (_stricmp(s, "__local_stdio_printf_options") != 0 &&
+			      _stricmp(s, "_vsnprintf_l") != 0 &&
+			      _stricmp(s, "_vsprintf_l") != 0) {
+#endif
 			if(strchr(s,'?')==0 && s[0]=='_' && strchr(s,'@') == 0 )//this is a C export type: _fct -> fct
 				  def_file << "    " << (s+1) << endl;			
 			else
 			if(strchr(s,'?')!=0 && strncmp(s,"??_G",4)!=0 && strncmp(s,"??_E",4)!=0) {
 				  def_file << "    " << s << endl;
+#if (_MSC_VER >= 1900)
+ 			  }
+#endif
 			  }
 		  }
 	  }
