travis: add "long" build script for cores with very large logs

travis/build-long.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+
+export LOGDATE=`date +%Y-%m-%d`
+mkdir -p /tmp/log/${LOGDATE}
+export BOT=.
+export TMPDIR=/tmp
+export EXIT_ON_ERROR=1
+
+# taken from https://stackoverflow.com/questions/26082444/how-to-work-around-travis-cis-4mb-output-limit
+export PING_SLEEP=30s
+export WORKDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+export BUILD_OUTPUT=$WORKDIR/build.out
+
+touch $BUILD_OUTPUT
+
+dump_output() {
+  echo Tailing the last 500 lines of output:
+  tail -500 $BUILD_OUTPUT
+}
+
+# Set up a repeating loop to send some output to Travis.
+
+bash -c "while true; do echo \$(date) - building ...; sleep $PING_SLEEP; done" &
+PING_LOOP_PID=$!
+
+./build-${PLATFORM}.sh &>$BUILD_OUTPUT
+
+RET=$?
+
+dump_output
+
+exit $RET