hi . i having issue to compile
error :
compil/Etxcoin-Dev-Repository/src$ sudo make -f makefile.unix
g++ -c -O2 -mssse3 -pthread -Wall -Wextra -Wno-ignored-qualifiers -Wformat -Wformat-security -Wno-unused-parameter -g -DBOOST_SPIRIT_THREADSAFE -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/home/***/***/Etxcoin-Dev-Repository/src -I/home/***/***/Etxcoin-Dev-Repository/src/obj -DUSE_IPV6=1 -DHAVE_BUILD_INFO -fno-stack-protector -fstack-protector-all -Wstack-protector -D_FORTIFY_SOURCE=2  -MMD -MF obj/alert.d -o obj/alert.o alert.cpp
alert.cpp:247:1: fatal error: opening dependency file obj/alert.d: No such file or directory
 }
 ^
compilation terminated.
makefile.unix:215: recipe for target 'obj/alert.o' failed
make: *** [obj/alert.o] Error 1


how fix that ?