ubuntu@ip-172-31-28-85:~/domjudge-4.0.5$ ./configure --prefix=$HOME/domjudge

checking whether configure should try to set CFLAGS... yes

checking whether configure should try to set CXXFLAGS... yes

checking whether configure should try to set LDFLAGS... yes

checking for gcc... gcc

checking whether the C compiler works... yes

checking for C compiler default output file name... a.out

checking for suffix of executables...

checking whether we are cross compiling... no

checking for suffix of object files... o

checking whether we are using the GNU C compiler... yes

checking whether gcc accepts -g... yes

checking for gcc option to accept ISO C89... none needed

checking whether C compiler accepts -Wall... yes

checking whether C compiler accepts -fstack-protector... yes

checking whether C compiler accepts -fPIE... yes

checking whether C compiler accepts -D_FORTIFY_SOURCE=2... yes

checking whether the linker accepts -fPIE... yes

checking whether the linker accepts -pie... yes

checking whether the linker accepts -Wl,-z,relro... yes

checking whether the linker accepts -Wl,-z,now... yes

checking domjudge-user... ubuntu (default: current user)

checking webserver-group... www-data (detected)

checking runuser... domjudge-run (default)

checking for cgroup_init in -lcgroup... no

checking for g++... g++

checking whether we are using the GNU C++ compiler... yes

checking whether g++ accepts -g... yes

checking for gcc... (cached) gcc

checking whether we are using the GNU C compiler... (cached) yes

checking whether gcc accepts -g... (cached) yes

checking for gcc option to accept ISO C89... (cached) none needed

checking how to run the C++ preprocessor... g++ -E

checking how to run the C preprocessor... gcc -E

checking for a BSD-compatible install... /usr/bin/install -c

checking whether ln -s works... yes

checking whether make sets $(MAKE)... yes

checking for a thread-safe mkdir -p... /bin/mkdir -p

checking for magic_open in -lmagic... yes

checking for a sed that does not truncate output... /bin/sed

checking for gawk... gawk

checking for curl-config... /usr/bin/curl-config

checking for curl (7.35.0) >= 7.9.7... yes

checking for grep that handles long lines and -e... /bin/grep

checking for egrep... /bin/grep -E

checking for ANSI C header files... yes

checking for sys/types.h... yes

checking for sys/stat.h... yes

checking for stdlib.h... yes

checking for string.h... yes

checking for memory.h... yes

checking for strings.h... yes

checking for inttypes.h... yes

checking for stdint.h... yes

checking for unistd.h... yes

checking curl/curl.h usability... yes

checking curl/curl.h presence... yes

checking for curl/curl.h... yes

checking jsoncpp/json/json.h usability... yes

checking jsoncpp/json/json.h presence... yes

checking for jsoncpp/json/json.h... yes

checking build system type... x86_64-unknown-linux-gnu

checking host system type... x86_64-unknown-linux-gnu

checking for boostlib >= 1.33.1... configure: We could not detect the boost libraries (version 1.33 or higher). If you have a staged boost library (still not installed) please specify $BOOST_ROOT in your environment and do not give a PATH to --with-boost option.  If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.

configure: error: Boost not found (required for checktestdata)

ubuntu@ip-172-31-28-85:~/domjudge-4.0.5$

my question is, why I didn't get that error with my previous installation?.

my current ubuntu version is:

and the domjudge version is 4.0.5 the same version I've used the last time I've succesfully installed on other ubuntu pc.

hope you can explain it a little if that boost is required, I've installed the compilers as described ni the documentation.