Installing pari/gp on Mac from source

[Summer Haag <Summer.Haag@colorado.edu>]

I'm trying to install pari/gp on Macbook air running macOS Sonoma version 14.5. I downloaded Xcode then the source from git and switched branches to 2.15. I also installed readline using the FAQ online and configure seems to have worked. Then when I ran make install there was an error with bison? The pari packages all seem to compile and then get the message: 

/usr/bin/gcc  -c -I. -I../src/headers -fPIC -O3 -Wall -ffp-contract=off -fno-strict-aliasing    -o zetamult.o ../src/basemath/zetamult.c

bison -d ../src/language/parse.y -o ../src/language/parse.c

../src/language/parse.y:28.9-19: syntax error, unexpected identifier, expecting string

make[1]: *** [../src/language/parse.inter] Error 1

make: *** [install] Error 2

Send help thank you,

Summer