[...]

libtool: link: ranlib .libs/libsnprintfv.a
libtool: link: ( cd ".libs" && rm -f "libsnprintfv.la" && ln -s "../libsnprintfv.la" "libsnprintfv.la" )
make[2]: Leaving directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/snprintfv'
Making all in autoopts
make[2]: Entering directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts'
/usr/bin/make  all-recursive
make[3]: Entering directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts'
Making all in test
make[4]: Entering directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts/test'
make[4]: Nothing to be done for 'all'.
make[4]: Leaving directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts/test'
make[4]: Entering directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts'
LGCFLAGS="-pthread -I/usr/include/guile/2.0" \
AGexe="/tmp/B.1lJsu2/BUILD/autogen-5.18.14/agen5/autogen" GDexe="/tmp/B.1lJsu2/BUILD/autogen-5.18.14/getdefs/getdefs" CLexe="/tmp/B.1lJsu2/BUILD/autogen-5.18.14/columns/columns" srcdir="."     top_srcdir=".." builddir="." top_builddir=".." AO_AGE="16"     AO_CURRENT="41" AO_REVISION="1" POSIX_SHELL="/bin/bash" \
    /bin/bash ./mk-tpl-config.sh tpl-config-stamp autoopts/options.h autoopts/usage-txt.h genshell.h option-xat-attribute.h option-value-type.h ao-strs.h ag-char-map.h autoopts.h project.h proto.h parse-duration.c ao-strs.c option-value-type.c option-xat-attribute.c autoopts.c alias.c    boolean.c   check.c     configfile.c cook.c enum.c     env.c       file.c      find.c       genshell.c load.c     makeshell.c nested.c    numeric.c    pgusage.c putshell.c reset.c     restore.c   save.c       sort.c stack.c    streqvcmp.c text_mmap.c time.c       tokenize.c usage.c    version.c   init.c
/bin/sh ../libtool  --tag=CC   --mode=compile x86_64-tld-linux-gcc -DHAVE_CONFIG_H -I. -I..  -I.. -I../autoopts  -DPKGDATADIR='"/usr/share/autogen"' -O2 -fwrapv -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fPIC -march=x86-64  -Wno-format-contains-nul -fno-strict-aliasing -Wall -Werror -Wcast-align -Wmissing-prototypes -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings -Wstrict-aliasing=3 -Wextra -Wno-cast-qual -O2 -fwrapv -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fPIC -march=x86-64  -Wno-format-contains-nul -fno-strict-aliasing -MT libopts_la-libopts.lo -MD -MP -MF .deps/libopts_la-libopts.Tpo -c -o libopts_la-libopts.lo `test -f 'libopts.c' || echo './'`libopts.c
libtool: compile:  x86_64-tld-linux-gcc -DHAVE_CONFIG_H -I. -I.. -I.. -I../autoopts -DPKGDATADIR=\"/usr/share/autogen\" -O2 -fwrapv -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fPIC -march=x86-64 -Wno-format-contains-nul -fno-strict-aliasing -Wall -Werror -Wcast-align -Wmissing-prototypes -Wpointer-arith -Wshadow -Wstrict-prototypes -Wwrite-strings -Wstrict-aliasing=3 -Wextra -Wno-cast-qual -O2 -fwrapv -pipe -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -fPIC -march=x86-64 -Wno-format-contains-nul -fno-strict-aliasing -MT libopts_la-libopts.lo -MD -MP -MF .deps/libopts_la-libopts.Tpo -c libopts.c  -fPIC -DPIC -o .libs/libopts_la-libopts.o
In file included from libopts.c:46:0:
usage.c: In function 'parse_usage_flags':
usage.c:155:17: error: this statement may fall through [-Werror=implicit-fallthrough=]
             txt = SPN_WHITESPACE_CHARS(txt + 1);
usage.c:158:9: note: here
         default:
         ^~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [Makefile:695: libopts_la-libopts.lo] Error 1
make[4]: Leaving directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts'
make[3]: *** [Makefile:929: all-recursive] Error 1
make[3]: Leaving directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts'
make[2]: *** [Makefile:554: all] Error 2
make[2]: Leaving directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14/autoopts'
make[1]: *** [Makefile:541: all-recursive] Error 1
make[1]: Leaving directory '/tmp/B.1lJsu2/BUILD/autogen-5.18.14'
make: *** [Makefile:448: all] Error 2
error: Bad exit status from /tmp/B.1lJsu2/BUILD/tmp/rpm-tmp.72134 (%build)
RPM build errors:
    Bad exit status from /tmp/B.1lJsu2/BUILD/tmp/rpm-tmp.72134 (%build)
ended at: Fri Aug 10 13:55:55 2018, done in 0:00:12.247352
error: No files produced.
mesg: ttyname failed: Inappropriate ioctl for device
+ chmod -R u+rwX /tmp/B.1lJsu2/BUILD
+ rm -rf /tmp/B.1lJsu2/tmp /tmp/B.1lJsu2/BUILD
mesg: ttyname failed: Inappropriate ioctl for device
+ rm -rf /tmp/B.1lJsu2
Begin-TLD-Builder-Info
Build-Time: user:8.91s sys:2.33s real:14.12s (faults io:37 non-io:1453045)
End-TLD-Builder-Info