bison fails on solaris on pari svn

[Jason Moxham <jason@njkfrudils.plus.com>]

the latest pari svn fails with this on T2 , the same machine I have been doing 
the other solaris tests on

/usr/local/gcc-4.2.4-sun-linker/bin/gcc  -c -O3 -Wall -fno-strict-aliasing -fomit-frame-pointer    -I. -I../src/headers  -o 
trans3.o ../src/basemath/trans3.c
bison -d ../src/language/parse.y -o ../src/language/parse.c
../src/language/parse.y:30.1-15: invalid directive: `%initial-action'
../src/language/parse.y:30.16-40: syntax error, unexpected "{...}"
make[1]: *** [../src/language/parse.h] Error 1
make[1]: Leaving directory `/scratch/jason/pari/Osolaris-sparcv9'
make: *** [gp] Error 2

It built fine before , and builds on linux with no problems

Jason