Build errors！！

[hysystem]

on_a-chainparams.o -MD -MP -MF .deps/libbitcoin_common_a-chainparams.Tpo -c -o libbitcoin_common_a-chainparams.o test -f 'chainparams.cpp' || echo './'chainparams.cpp
chainparams.cpp: In constructor ‘CMainParams::CMainParams()’:
chainparams.cpp:52:19: error: ‘struct Consensus::Params’ has no member named ‘fPowAllowMinDifficultyBlocks’
consensus.fPowAllowMinDifficultyBlocks = false;
^
chainparams.cpp: In constructor ‘CTestNetParams::CTestNetParams()’:
chainparams.cpp:228:19: error: ‘struct Consensus::Params’ has no member named ‘fPowAllowMinDifficultyBlocks’
consensus.fPowAllowMinDifficultyBlocks = true;
^
At global scope:
cc1plus: error: unrecognized command line option "-Wno-builtin-declaration-mismatch" [-Werror]
cc1plus: all warnings being treated as errors
make[2]: *** [libbitcoin_common_a-chainparams.o] Error 1
make[2]: Leaving directory /data/zclassic/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory /data/zclassic/src'
make: *** [all-recursive] Error 1

[nimbosa]

hi @iasoo, are you using the latest master here on github? if not, please pull from the latest changes, Thanks!

[nimbosa]

also, what Operating System (and version) are you using?

[hysystem]

LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID: CentOS
Description: CentOS Linux release 7.5.1804 (Core)
Release: 7.5.1804
Codename: Core
@nimbosa

[hysystem]

git status

On branch master
nothing to commit, working directory clean

git pull
Already up-to-date.

I using using the latest maste！

[hysystem]

./zcutil/fetch-params.sh

Zcash - fetch-params.sh

This script will fetch the Zcash zkSNARK parameters and verify their
integrity with sha256sum.

If they already exist locally, it will exit now and do nothing else.
@nimbosa

[hysystem]

gcc version 4.9.2 20150212 (Red Hat 4.9.2-6) (GCC)

[nixtechie49]

Got the same error during build command.

[nimbosa]

1. need to backport deprecate policy from/for v1.1.1 #187 & doc + policy: use bionic instead of xenial #188 should fix this on xenial, it must be too old by now and bionic is the new LTS, reference client now uses Ubuntu 18.04.1 LTS, we just might make it official and documentation will be updated properly, CentOS builds however are not yet documented, as far as i know

2. deprecate policy must also be updated

i must have overlooked these as i was working on the Overwinter branch v1.1.1, fixes will follow shortly, thanks for reporting this