Error building m4 on Solaris 10

["Gerardo Santana Gómez Garrido" <gerardo.santana%gmail.com@localhost>]

This is the error message:

gcc -std=gnu99  -I.      -O -MT strtod.o -MD -MP -MF .deps/strtod.Tpo
-c -o strtod.o strtod.c
strtod.c: In function `rpl_strtod':
strtod.c:155: error: incompatible types in assignment
strtod.c:170: error: incompatible types in assignment
strtod.c:257: error: wrong type argument to unary minus
*** Error code 1

The lines in question are:

155:      num = HUGE_VAL;
170:      num = NAN;
257:  return negative ? -HUGE_VAL : HUGE_VAL;


-- 
Gerardo Santana