checking whether cc supports -Werror... yes
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./buffer.c -o buffer.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./dane.c -o dane.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./dname.c -o dname.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./dnssec.c -o dnssec.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./dnssec_sign.c -o dnssec_sign.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./dnssec_verify.c -o dnssec_verify.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./dnssec_zone.c -o dnssec_zone.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./duration.c -o duration.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./error.c -o error.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./higher.c -o higher.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./host2str.c -o host2str.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./host2wire.c -o host2wire.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./keys.c -o keys.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./net.c -o net.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./packet.c -o packet.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./parse.c -o parse.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./radix.c -o radix.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./rbtree.c -o rbtree.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./rdata.c -o rdata.lo
./libtool --tag=CC --quiet --mode=compile cc -I. -I.  -DHAVE_CONFIG_H -DLDNS_TRUST_ANCHOR_FILE="\"/etc/unbound/root.key\"" -DOPENSSL_API_COMPAT=10100 -fno-strict-aliasing -Wunused-function -Wstrict-prototypes -Wwrite-strings -W -Wall -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt -D_GNU_SOURCE  -c ./resolver.c -o resolver.lo
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: duration.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: error.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: rbtree.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: dane.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: higher.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: buffer.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: dname.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: host2wire.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: parse.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: dnssec_sign.lo] Error 1
make: *** [Makefile:142: packet.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: rdata.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: radix.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: dnssec.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: resolver.lo] Error 1
make: *** [Makefile:142: net.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: dnssec_zone.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: keys.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: dnssec_verify.lo] Error 1
cc: error: \@-DLDNS_TRUST_ANCHOR_FILE="/etc/unbound/root.key"\: linker input file not found: No such file or directory
make: *** [Makefile:142: host2str.lo] Error 1
>>> ERROR: ldns: build failed