The moc executable loops through headers on CPLUS_INCLUDE_PATH and stumbles
on the GCC internal _GLIBCXX_VISIBILITY macro. Tell it to ignore it as it is
not supposed to be looking there to begin with.
Upstream report: https://bugreports.qt.io/browse/QTBUG-83160
diff --git a/src/tools/moc/main.cpp b/src/tools/moc/main.cpp
--- a/src/tools/moc/main.cpp
+++ b/src/tools/moc/main.cpp
@@ -188,6 +188,7 @@ int runMoc(int argc, char **argv)
dummyVariadicFunctionMacro.arguments += Symbol(0, PP_IDENTIFIER, "__VA_ARGS__");
pp.macros["__attribute__"] = dummyVariadicFunctionMacro;
pp.macros["__declspec"] = dummyVariadicFunctionMacro;
+ pp.macros["_GLIBCXX_VISIBILITY"] = dummyVariadicFunctionMacro;
QString filename;
QString output;
>