errors building m4 on interix/sfu/sua

[Jay]

m4-1.4.13
spawni.c: In function `gl_posix_spawn_internal':
spawni.c:233: warning: implicit declaration of function `seteuid'
spawni.c:234: warning: implicit declaration of function `setegid'
spawni.c:354: error: `ESTALE' undeclared (first use in this function)
spawni.c:354: error: (Each undeclared identifier is reported only once
spawni.c:354: error: for each function it appears in.)
 
 => suggest #ifdef ESTALE around the use of ESTALE
   (I see Posix mandates ESTALE, and gnulib works around it missing on some systems.)
 
 
 seteuid/gid are "only" warnings so I guess ok.
 seteuid is in libc.a but not any headers.

 
m4-1.4.12
fatal-signal.c: In function `install_handlers':
fatal-signal.c:189: error: `SA_NODEFER' undeclared (first use in this function)
fatal-signal.c:189: error: (Each undeclared identifier is reported only once
fatal-signal.c:189: error: for each function it appears in.)
 
 
m4-1.4.11
 => no problem


 - Jay