ci: Add CentOS 7 build

.travis.yml

@@ -118,6 +118,11 @@ jobs:
       env: >-
         FILE_ENV="./ci/test/00_setup_env_i686.sh"
 
+    - stage: test
+      name: 'x86_64 Linux  [GOAL: install]  [CentOS 7]  [no depends, only system libs]'
+      env: >-
+        FILE_ENV="./ci/test/00_setup_env_native_centos.sh"
+
     - stage: test
       name: 'x86_64 Linux  [GOAL: install]  [bionic]  [uses qt5 dev package instead of depends Qt to speed up build and avoid timeout] [unsigned char]'
       env: >-

ci/test/00_setup_env_native_centos.sh

@@ -0,0 +1,14 @@
+#!/usr/bin/env bash
+#
+# Copyright (c) 2019 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+export LC_ALL=C.UTF-8
+
+export DOCKER_NAME_TAG=centos:7
+export DOCKER_PACKAGES="gcc-c++ libtool make git python3 python36-zmq"
+export PACKAGES="boost-devel libevent-devel libdb4-devel libdb4-cxx-devel miniupnpc-devel zeromq-devel qt5-qtbase-devel qt5-qttools-devel qrencode-devel"
+export NO_DEPENDS=1
+export GOAL="install"
+export BITCOIN_CONFIG="--enable-reduce-exports"

ci/test/04_install.sh

@@ -6,6 +6,10 @@
 
 export LC_ALL=C.UTF-8
 
+if [[ $DOCKER_NAME_TAG == centos* ]]; then
+  export LC_ALL=en_US.utf8
+fi
+
 if [ "$TRAVIS_OS_NAME" == "osx" ]; then
   set +o errexit
   pushd /usr/local/Homebrew || exit 1
@@ -78,7 +82,10 @@ if [ -n "$DPKG_ADD_ARCH" ]; then
   DOCKER_EXEC dpkg --add-architecture "$DPKG_ADD_ARCH"
 fi
 
-if [ "$TRAVIS_OS_NAME" != "osx" ]; then
+if [[ $DOCKER_NAME_TAG == centos* ]]; then
+  ${CI_RETRY_EXE} DOCKER_EXEC yum -y install epel-release
+  ${CI_RETRY_EXE} DOCKER_EXEC yum -y install $DOCKER_PACKAGES $PACKAGES
+elif [ "$TRAVIS_OS_NAME" != "osx" ]; then
   ${CI_RETRY_EXE} DOCKER_EXEC apt-get update
   ${CI_RETRY_EXE} DOCKER_EXEC apt-get install --no-install-recommends --no-upgrade -y $PACKAGES $DOCKER_PACKAGES
 fi