Use -DFORTIFY_SOURCE=3 by appending it to CPPFLAGS directly instead of adding it indirectly to CFLAGS.
* Makefile (FORTIFY): Remove "-D_FORTIFY_SOURCE=3". (Fortify section/CPPFLAGS): New; append "-D_FORTIFY_SOURCE=3". (FEATURES): Remove. Contents moved to CPPFLAGS. (CPPFLAGS): New; append "-D_FILE_OFFSET_BITS=64". (CFLAGS): Do not use "$(FEATURES)".
if ! dpkg-statoverride --list "/var/lib/mandos" >/dev/null \
64
2>&1; then
65
chown _mandos:_mandos /var/lib/mandos
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chmod u=rwx,go= /var/lib/mandos
67
fi
68
69
if dpkg --compare-versions "$2" eq "1.8.0-1" \
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|| dpkg --compare-versions "$2" eq "1.8.0-1~bpo9+1"; then
71
if grep --quiet --regexp='^[[:space:]]*key_id[[:space:]]*=[[:space:]]*[Ee]3[Bb]0[Cc]44298[Ff][Cc]1[Cc]149[Aa][Ff][Bb][Ff]4[Cc]8996[Ff][Bb]92427[Aa][Ee]41[Ee]4649[Bb]934[Cc][Aa]495991[Bb]7852[Bb]855[[:space:]]*$' /etc/mandos/clients.conf; then