Compiler error of m4-1.4.13 on AIX using xlc

[Jens Rehsack]

Hi Eric,

Thomas told me, you're the best person to ask for assistance regarding the
problem below.

I tried to do the update to m4-1.4.13 (using PkgSrc) on AIX and got
following error:

>  CC  regex.o
> "regex_internal.c", line 320.48: 1506-280 (W) Function argument assignment 
> between types "char** restrict" and "int*" is not allowed.
> "regex_internal.c", line 388.55: 1506-280 (W) Function argument assignment 
> between types "char** restrict" and "int*" is not allowed.
> "regcomp.c", line 339.63: 1506-280 (W) Function argument assignment 
> between types "char** restrict" and "int*" is not allowed.
> "regcomp.c", line 411.57: 1506-280 (W) Function argument assignment 
> between types "char** restrict" and "int*" is not allowed.
> "regcomp.c", line 415.72: 1506-280 (W) Function argument assignment 
> between types "char** restrict" and "int*" is not allowed.
>  CC  signbitd.o
>  CC  signbitf.o
>  CC  signbitl.o
>  CC  spawn_faction_addclose.o
>  CC  spawn_faction_adddup2.o
>  CC  spawn_faction_addopen.o
>  CC  spawn_faction_destroy.o
>  CC  spawn_faction_init.o
>  CC  spawnattr_destroy.o
>  CC  spawnattr_init.o
>  CC  spawnattr_setflags.o
>  CC  spawnattr_setsigmask.o
>  CC  spawni.o
>  CC  spawnp.o
>  CC  strchrnul.o
>  CC  stripslash.o
>  CC  strsignal.o
>  CC  strstr.o
>  CC  strtod.o
> "strtod.c", line 155.17: 1506-045 (S) Undeclared identifier HUGE_VAL.
> "strtod.c", line 170.17: 1506-232 (I) Divisor for modulus or division 
> operator cannot be zero.
> 
> #include_next "///usr/vac/include/math.h" <-- wrong: must use /usr/include

The problem was easy to fix for the current compilation, but I don't know
how to fix the math.in.h - or if this would be the right file to fix etc.

Would be great if you could give me a hint or maybe just fix it, if you know
how. If I should provide more logs, simply tell me what you need.

Best regards,
Jens