@@ -417,11 +417,12 @@ AC_MSG_CHECKING(whether we need -D_GNU_SOURCE) AC_EGREP_CPP(egrep_cpp_yes, [ #include - #if defined(__GLIBC__) || defined(__MINGW32__) || defined(__NEWLIB__) + #if defined(__GLIBC__) || defined(__MINGW32__) || \ + defined(__NEWLIB__) || defined(__MORPHOS__) egrep_cpp_yes #endif ], [ CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS" AC_MSG_RESULT(yes)