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#!/bin/sh
set -e
echo debconf firebuild/license-accepted select true | debconf-set-selections
apt-get -yqq install firebuild
firebuild --version
for i in 1 2; do
rm -rf bash-*
apt-get source bash 2>&1
apt-get -yqq build-dep bash
(cd bash-* && /usr/bin/time -f "real${i}=%e\nuser${i}=%U\nsys${i}=%S" -a --output=../time.log firebuild -s -- sh -c "make -f debian/rules bash-configure && make -j4 -f debian/rules bash-build")
done
echo "Build times:"
cat time.log
# ./configure is harder to accelerate, but the second run should still be at least 80% faster
CPU_TIME_PERCENT2=$( (cat time.log ; echo "(user2+sys2)*100/(user1+sys1)") | bc)
echo "CPU time of the second build was ${CPU_TIME_PERCENT2}% of the first build"
case $(dpkg-architecture -q DEB_HOST_ARCH) in
armel)
# armel results typically just below 20%, while the hit rate is similar to other architectures'
[ $CPU_TIME_PERCENT2 -lt 30 ]
;;
*)
# 2nd builds are typically just below 10% of the first builds
[ $CPU_TIME_PERCENT2 -lt 20 ]
;;
esac
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