After this warning, I installed bison, but still get the warning and subsequent error. Where can I go for help on this? Here's some of the log: rm -f gcjh /home/joe/gcc/objdir/./prev -gcc/xgcc -B/home/joe/gcc/objdir/./prev-gcc/ -B/usr/l ocal/i686-pc-linux-gnu/bin/ -O2 -g -fomit-frame-pointer -DIN_GCC -W -Wall -W write-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wmissing-fo rmat-attribute -DHAVE_CONFIG_H -o gcjh java/gjavah.o java/jcf-io.o java/jcf- depend.o java/jcf-path.o java/win32-host.o java/zextract.o version.o errors.o gg c-none.o intl.o -L../zlib -lz ../libcpp/libcpp.a ../libiberty/libiberty.a ../ libdecnumber/libdecnumber.a /home/joe/gcc/gcc-4.2.0/missing bison -t -o java/parse-scan.c ../../gcc-4.2.0/g cc/java/parse-scan.y WARNING: `bison' missing on your system. You should only need it if you modified a `.y' file. You may need the `Bison' package in order for those modifications to take effect. You can get `Bison' from any GNU archive site. /home/joe/gcc/objdir/./prev-gcc/xgcc -B/home/joe/gcc/objdir/./prev-gcc/ -B/usr/l ocal/i686-pc-linux-gnu/bin/ -c -O2 -g -fomit-frame-pointer -DIN_GCC -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-lo ng -Wno-variadic-macros -Wno-overlength-strings -Wold-style-definition -Wmissing -format-attribute -Wno-error -DHAVE_CONFIG_H -I. -Ijava -I../../gcc- 4.2.0/gcc -I../../gcc-4.2.0/gcc/java -I../../gcc-4.2.0/gcc/../include -I../../gcc-4.2.0/gc c/../libcpp/include -I../../gcc-4.2.0/gcc/../libdecnumber -I../libdecnumber java/parse- scan.c -o java/parse-scan.o xgcc: java/parse-scan.c: No such file or directory xgcc: no input files make[3]: *** [java/parse-scan.o] Error 1 make[3]: Leaving directory `/home/joe/gcc/objdir/gcc' make[2]: *** [all-stage2-gcc] Error 2 make[2]: Leaving directory `/home/joe/gcc/objdir' make[1]: *** [stage2-bubble] Error 2 make[1]: Leaving directory `/home/joe/gcc/objdir' make: *** [all] Error 2 Note: /home/joe/gcc/objdir> which bison /usr/bin/bison /home/joe/gcc/objdir> bison -V bison (GNU Bison) 1.875 Written by Robert Corbett and Richard Stallman.