install phalcon with php7.1.4

OS :Centos , Linux development 3.10.0-514.16.1.el7.x86_64 #1 SMP Wed Apr 12 15:04:24 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux PHP: 7.1.4 Mem: 1G

where "cd build/" then "./install", the shell always wating... i use "strace" to run install like this: "strace ./install" it's show these message,

wait4(-1, 0x7ffc8796b650, WNOHANG, NULL) = -1 ECHILD (No child processes) rt_sigreturn() = 0 rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7f3377979250}, {0x43e670, [], SA_RESTORER, 0x7f3377979250}, 8) = 0 rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0 read(255, "\nmake -s -j\"$(getconf _NPROCESSO"..., 3606) = 179 rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0 rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0 rt_sigprocmask(SIG_BLOCK, NULL, [], 8) = 0 pipe([3, 4]) = 0 rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0 lseek(255, -137, SEEK_CUR) = 3469 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f3378343a10) = 1848 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigaction(SIGCHLD, {0x441200, [], SA_RESTORER|SA_RESTART, 0x7f3377979250}, {0x441200, [], SA_RESTORER|SA_RESTART, 0x7f3377979250}, 8) = 0 close(4) = 0 read(3, "1\n", 128) = 2 read(3, "", 128) = 0 close(3) = 0 rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0 rt_sigaction(SIGINT, {0x43e670, [], SA_RESTORER, 0x7f3377979250}, {SIG_DFL, [], SA_RESTORER, 0x7f3377979250}, 8) = 0 wait4(-1, [{WIFEXITED(s) && WEXITSTATUS(s) == 0}], 0, NULL) = 1848 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1848, si_status=0, si_utime=0, si_stime=0} --- wait4(-1, 0x7ffc8796b090, WNOHANG, NULL) = -1 ECHILD (No child processes) rt_sigreturn() = 0 rt_sigaction(SIGINT, {SIG_DFL, [], SA_RESTORER, 0x7f3377979250}, {0x43e670, [], SA_RESTORER, 0x7f3377979250}, 8) = 0 rt_sigprocmask(SIG_BLOCK, [INT CHLD], [], 8) = 0 rt_sigprocmask(SIG_BLOCK, [CHLD], [INT CHLD], 8) = 0 rt_sigprocmask(SIG_SETMASK, [INT CHLD], NULL, 8) = 0 clone(child_stack=0, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x7f3378343a10) = 1849 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0 rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0 rt_sigaction(SIGINT, {0x43e670, [], SA_RESTORER, 0x7f3377979250}, {SIG_DFL, [], SA_RESTORER, 0x7f3377979250}, 8) = 0 wait4(-1, mkdir .libs gcc -I. -I/usr/local/src/cphalcon/build/php7/64bits -DPHP_ATOM_INC -I/usr/local/src/cphalcon/build/php7/64bits/include -I/usr/local/src/cphalcon/build/php7/64bits/main -I/usr/local/src/cphalcon/build/php7/64bits -I/usr/local/php-fcgi/include/php -I/usr/local/php-fcgi/include/php/main -I/usr/local/php-fcgi/include/php/TSRM -I/usr/local/php-fcgi/include/php/Zend -I/usr/local/php-fcgi/include/php/ext -I/usr/local/php-fcgi/include/php/ext/date/lib -DPHALCON_RELEASE -DHAVE_CONFIG_H -march=native -mtune=native -O2 -fomit-frame-pointer -c /usr/local/src/cphalcon/build/php7/64bits/phalcon.zep.c -fPIC -DPIC -o .libs/phalcon.o .................

who can help me ? thank you .

how are you trying to install this ?