"x86_64-pc-linux-gnu-gcc -o conftest -I/usr/include/ruby-1.9.1/x86_64-linux -I/usr/include/ruby-1.9.1/ruby/backward -I/usr/include/ruby-1.9.1 -I.    -g -O2 -pipe -mtune=amdfam10 -march=amdfam10 -floop-interchange -floop-strip-mine -floop-block -ftree-vectorize -fno-strict-aliasing -fPIC conftest.c  -L. -L/usr/lib64 -Wl,-R/usr/lib64 -L. -Wl,--hash-style=gnu,-O1 -Wl,--as-needed -rdynamic -Wl,-export-dynamic -Wl,--no-undefined     -Wl,-R -Wl,/usr/lib64 -L/usr/lib64 -lruby19  -lpthread -lrt -ldl -lcrypt -lm   -lc"
conftest.c:1:0: sorry, unimplemented: Graphite loop optimizations cannot be used (-fgraphite, -fgraphite-identity, -floop-block, -floop-flatten, -floop-interchange, -floop-strip-mine, -floop-parallelize-all, and -ftree-loop-linear)
checked program was:
/* begin */
1: #include "ruby.h"
2: 
3: int main() {return 0;}
/* end */