Is the gd library missing for composer installation?

The error code is as follows: {code...} the error code is as follows:

root@ubuntu:~/lnmp/src/php-5.6.14/ext/gd# make && make install/bin/bash /root/lnmp/src/php-5.6.14/ext/gd/libtool --mode=compile cc -I/root/lnmp/src/php-5.6.14/ext/gd/libgd -DHAVE_LIBPNG -I. -I/root/lnmp/src/php-5.6.14/ext/gd -DPHP_ATOM_INC -I/root/lnmp/src/php-5.6.14/ext/gd/include -I/root/lnmp/src/php-5.6.14/ext/gd/main -I/root/lnmp/src/php-5.6.14/ext/gd -I/usr/local/php/include/php -I/usr/local/php/include/php/main -I/usr/local/php/include/php/TSRM -I/usr/local/php/include/php/Zend -I/usr/local/php/include/php/ext -I/usr/local/php/include/php/ext/date/lib  -DHAVE_CONFIG_H  -g -O2   -c /root/lnmp/src/php-5.6.14/ext/gd/gd.c -o gd.lo mkdir .libs cc -I/root/lnmp/src/php-5.6.14/ext/gd/libgd -DHAVE_LIBPNG -I. -I/root/lnmp/src/php-5.6.14/ext/gd -DPHP_ATOM_INC -I/root/lnmp/src/php-5.6.14/ext/gd/include -I/root/lnmp/src/php-5.6.14/ext/gd/main -I/root/lnmp/src/php-5.6.14/ext/gd -I/usr/local/php/include/php -I/usr/local/php/include/php/main -I/usr/local/php/include/php/TSRM -I/usr/local/php/include/php/Zend -I/usr/local/php/include/php/ext -I/usr/local/php/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /root/lnmp/src/php-5.6.14/ext/gd/gd.c  -fPIC -DPIC -o .libs/gd.o/root/lnmp/src/php-5.6.14/ext/gd/gd.c:80:24: fatal error: ft2build.h: No such file or directory #  include 
  
                           ^compilation terminated.make: *** [gd.lo] Error 1
  

Reply content:

The error code is as follows:

root@ubuntu:~/lnmp/src/php-5.6.14/ext/gd# make && make install/bin/bash /root/lnmp/src/php-5.6.14/ext/gd/libtool --mode=compile cc -I/root/lnmp/src/php-5.6.14/ext/gd/libgd -DHAVE_LIBPNG -I. -I/root/lnmp/src/php-5.6.14/ext/gd -DPHP_ATOM_INC -I/root/lnmp/src/php-5.6.14/ext/gd/include -I/root/lnmp/src/php-5.6.14/ext/gd/main -I/root/lnmp/src/php-5.6.14/ext/gd -I/usr/local/php/include/php -I/usr/local/php/include/php/main -I/usr/local/php/include/php/TSRM -I/usr/local/php/include/php/Zend -I/usr/local/php/include/php/ext -I/usr/local/php/include/php/ext/date/lib  -DHAVE_CONFIG_H  -g -O2   -c /root/lnmp/src/php-5.6.14/ext/gd/gd.c -o gd.lo mkdir .libs cc -I/root/lnmp/src/php-5.6.14/ext/gd/libgd -DHAVE_LIBPNG -I. -I/root/lnmp/src/php-5.6.14/ext/gd -DPHP_ATOM_INC -I/root/lnmp/src/php-5.6.14/ext/gd/include -I/root/lnmp/src/php-5.6.14/ext/gd/main -I/root/lnmp/src/php-5.6.14/ext/gd -I/usr/local/php/include/php -I/usr/local/php/include/php/main -I/usr/local/php/include/php/TSRM -I/usr/local/php/include/php/Zend -I/usr/local/php/include/php/ext -I/usr/local/php/include/php/ext/date/lib -DHAVE_CONFIG_H -g -O2 -c /root/lnmp/src/php-5.6.14/ext/gd/gd.c  -fPIC -DPIC -o .libs/gd.o/root/lnmp/src/php-5.6.14/ext/gd/gd.c:80:24: fatal error: ft2build.h: No such file or directory #  include 
  
                           ^compilation terminated.make: *** [gd.lo] Error 1
  

Ft2build. h No such file or directory is a typical error. You can use this method after google.