> I installed the attached patch, which is less ambitious but should > address the original problem report. It does address the problem report and it looks good to me, thanks a lot! It's also a bit less invasive than passing -std:c11 -Zc:__STDC__. The manual of AC_C_VARARRAYS could mention using __STDC_NO_VLA__ instead, for C11 and onwards. Best regards, -- Antonin