On 8 Jun 2021, at 13:35, Costin Lupu > wrote: For replication I used gcc 10.3 on an Alpine system. In order to replicate the redefinition error for PAGE_SIZE one should install the 'fortify-headers' package which will change the chain of included headers by indirectly including /usr/include/limits.h where PAGE_SIZE and PATH_MAX are defined. [..] tools/ocaml/libs/xc/xenctrl_stubs.c | 10 +++---- .../ocaml/libs/xentoollog/xentoollog_stubs.c | 4 +++ tools/ocaml/libs/xl/xenlight_stubs.c | 4 +++ Acked-by: Christian Lindig >