Curl building error

[Disinterpreter]

What's wrong?

root@poseidon:/home/disi/rtpproxy# make
Making all in libexecinfo
make[1]: Entering directory '/home/disi/rtpproxy/libexecinfo'
make[1]: Nothing to be done for 'all'.
make[1]: Leaving directory '/home/disi/rtpproxy/libexecinfo'
Making all in libucl
make[1]: Entering directory '/home/disi/rtpproxy/libucl'
make[1]: *** No rule to make target '../external/libucl/src/ucl_emitter_streamline.c', needed by 'libucl_a-ucl_emitter_streamline.o'.  Stop.
make[1]: Leaving directory '/home/disi/rtpproxy/libucl'
Makefile:482: recipe for target 'all-recursive' failed
make: *** [all-recursive] Error 1
root@poseidon:/home/disi/rtpproxy# 

[Disinterpreter]

Sorry, I understood my mistake: git -C rtpproxy submodule update --init --recursive