Hi, i tried to compile Haiku with GCC4. I made it all as you write in your ReadMe file. I ended up with an error: /bison.simple:614: warning: comparison between signed and unsigned /bison.simple:626: warning: comparison between signed and unsigned gcc -O2 -DIN_GCC -DCROSS_COMPILE -W -Wall -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -DHAVE_CONFIG_H -DGENERATOR_FILE -o build/gengtype \ build/gengtype.o build/gengtype-lex.o build/gengtype-yacc.o \ build/errors.o ../build-i586-pc-beos/libiberty/libiberty.a build/gengtype /Source/sourcecodes/haiku/haiku/buildtools/trunk/gcc/gcc/input.h:52: parse error, expecting `GTY_TOKEN' make[1]: *** [s-gtype] Error 1 make[1]: Leaving directory `/Source/sourcecodes/haiku/haiku/haiku/trunk/generated/cross-tools-build/gcc /gcc' make: *** [all-gcc] Error 2 ERROR: Building gcc failed. $ Greets, Bernd