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#!/bin/bash
# to compute the coverage of mpfr-x.y.z, just copy this script
# into mpfr-x.y.z/tools and run it
# Warning! Do not run this script on a machine shared with other users,
# otherwise your account can easily be compromised:
# https://debbugs.gnu.org/cgi/bugreport.cgi?bug=21951
#
# To avoid being affected by this libtool bug, this script could be modified
# to use a subdirectory of /tmp/ompfr-gcov for the MPFR build.
# Set up the right directoy
cd $(dirname $0)/..
# First Build MPFR in /tmp/
echo "Erasing previous /tmp/ompfr-gcov"
rm -rf /tmp/ompfr-gcov || exit 1
mkdir /tmp/ompfr-gcov || exit 1
echo "Copying MPFR sources to /tmp/ompfr-gcov"
cp -r . /tmp/ompfr-gcov || exit 1
cd /tmp/ompfr-gcov || exit 1
echo "Remove previous coverage information."
rm -f $(find . -name '*.gc*')
# Remove MPFR_* environment variables to get reproducible coverage results.
for i in `env | sed -n 's/^\(MPFR_[^=]*\).*/\1/p'`; do unset "$i"; done
echo "Reconfiguring MPFR"
autoreconf -i || exit 1
echo "Building MPFR"
./configure --enable-assert=none --enable-tune-for-coverage --disable-shared --enable-static \
CFLAGS="--coverage -g" || exit 1
make clean || exit 1
make all -j4 || exit 1
# Note: we want to compute the coverage even in case of failure of some tests.
unset GMP_CHECK_RANDOMIZE
make check -j4
# Check version of gcov:
# 3.3 outputs like this:
# 100.00% of 36 lines executed in function mpfr_add
# 100.00% of 36 lines executed in file add.c
# Creating add.c.gcov.
# It doesn't support gcov *.c
#
# gcov (GCC) 3.4 outputs like this:
# Function `mpfr_add'
# Lines executed:100.00% of 36
#
# File `add.c'
# Lines executed:100.00% of 36
# add.c:creating `add.c.gcov'
# It supports gcov *.c
# Setup the parser depending on gcov
version=$(gcov --version | head -1 | cut -f2 -d')')
version=$(( $(echo "$version" | cut -f1 -d'.')*100 + $(echo "$version" | cut -f1 -d'.')*10 ))
if test "$version" -ge 340 ; then
echo "#!/bin/bash
while true ; do
if read x ; then
case \$x in
Function*)
read y
case \$y in
*100.00*)
;;
*)
echo \$x \$y
;;
esac
;;
esac
else
exit 0
fi
done
" > coverage.subscript
else
echo "#!/bin/bash
while true ; do
if read x ; then
case \$x in
100.00*)
;;
*function*)
echo \$x
;;
esac
else
exit 0
fi
done
" > coverage.subscript
fi
# Do "gcov" for all files and parse the output
cd src
for i in $(find . -name '*.c')
do
gcov -f $i -o $(dirname $i) 2> /dev/null || exit 1
done | bash ../coverage.subscript | grep -v '__gmp' > ../coverage.mpfr
rm -f coverage.subscript coverage-tmp || exit 1
cd -
lcov --rc lcov_branch_coverage=1 --capture --directory . --output-file all.info || exit 1
genhtml --branch-coverage -o coverage all.info || exit 1
echo "Coverage summary saved in file /tmp/ompfr-gcov/coverage.mpfr"
echo "Detailed coverage is available at /tmp/ompfr-gcov/coverage/index.html"
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