Solaris 2.5.1, gcc version 2.96 200006021; __builtin_va_alist missing

[Jim McKelvey]

This started failing recently:


gmake[1]: Entering directory 
`/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc-obj/libiberty'
if [ x"" != x ]; then \
  gcc -c -DHAVE_CONFIG_H -g -O2 -I. 
-I/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/../include  -W 
-Wall -Wtraditional -pedantic  
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c -o 
pic/concat.o; \
else true; fi
gcc -c -DHAVE_CONFIG_H -g -O2 -I. 
-I/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/../include  -W 
-Wall -Wtraditional -pedantic 
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c: In 
function `concat':
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c:96: 
`__builtin_va_alist' undeclared (first use in this function)
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c:96: 
(Each undeclared identifier is reported only once
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c:96: for 
each function it appears in.)
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c:107: 
warning: implicit declaration of function `__builtin_va_arg_incr'
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c:133: 
warning: function `__builtin_va_arg_incr' was previously declared within a block
/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc/libiberty/concat.c:88: 
warning: `args' might be used uninitialized in this function
gmake[1]: *** [concat.o] Error 1
gmake[1]: Leaving directory 
`/afs/jpl.nasa.gov/home/m/mckelvey/public/Software/gcc-obj/libiberty'
gmake: *** [all-libiberty] Error 2
mushroom...gcc-obj>