I tried installing phalcon php on Amazon AWS, I had the error below
libtool: compile: gcc -I. -I/home/ec2-user/cphalcon/build/64bits -DPHP_ATOM_INC -I/home/ec2-user/cphalcon/build/64bits/include -I/home/ec2-user/cphalcon/build/64bits/main -I/home/ec2-user/cphalcon/build/64bits -I/usr/include/php/5.5/php -I/usr/include/php/5.5/php/main -I/usr/include/php/5.5/php/TSRM -I/usr/include/php/5.5/php/Zend -I/usr/include/php/5.5/php/ext -I/usr/include/php/5.5/php/ext/date/lib -DPHALCON_RELEASE -DHAVE_CONFIG_H -march=native -mtune=native -O2 -fomit-frame-pointer -fvisibility=hidden -c /home/ec2-user/cphalcon/build/64bits/phalcon.zep.c -fPIC -DPIC -o .libs/phalcon.o
gcc: internal compiler error: Killed (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
make: *** [phalcon.lo] Error 1