Fresh compilation on Ubuntu 16.04 fails: build/server.d: No such file or directory

[ghost]

After a fresh cloning with submodules:

$ make
g++ -std=c++11 -Wall -Wextra -Wno-unknown-pragmas -Wno-unused-parameter -MMD -MP -I ./src/ -I ./lib/uWebSockets/src/ -I ./lib/json/include/ -O2 -c -o build/server.o src/server.cpp
src/server.cpp:500:1: fatal error: opening dependency file build/server.d: No such file or directory
 }
 ^
compilation terminated.
Makefile:45: recipe for target 'build/server.o' failed
make: *** [build/server.o] Error 1

[nagalun]

Fixed lol