Trying to make node in ubuntu 18.04 LTS and after ./autogen.sh get the error :

Makefile.am:78: error: CPPFLAGS_FOR_BUILD must be set with '=' before using '+='
Makefile.am:79: error: CFLAGS_FOR_BUILD must be set with '=' before using '+='
Makefile.am: installing 'build-aux/depcomp'
parallel-tests: installing 'build-aux/test-driver'
autoreconf: automake failed with exit status: 1

how to fix it ?

UPD: problem in library secp256k1
I copy folder /src/secp256k1 from proton 2.0 and build normal...
masternode starting and show version Phase Core:2.1.0.1