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postPhases+=" cleanupBuildDir"
# Force GCC to build with coverage instrumentation. Also disable
# optimisation, since it may confuse things.
export NIX_CFLAGS_COMPILE="${NIX_CFLAGS_COMPILE:-} -O0 --coverage"
# Get rid of everything that isn't a gcno file or a C source file.
# Also strip the `.tmp_' prefix from gcno files. (The Linux kernel
# creates these.)
cleanupBuildDir() {
if ! [ -e $out/.build ]; then return; fi
find $out/.build/ -type f -a ! \
\( -name "*.c" -o -name "*.cc" -o -name "*.cpp" -o -name "*.h" -o -name "*.hh" -o -name "*.y" -o -name "*.l" -o -name "*.gcno" \) \
| xargs rm -f --
for i in $(find $out/.build/ -name ".tmp_*.gcno"); do
mv "$i" "$(echo $i | sed s/.tmp_//)"
done
}
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