>>> host-capnproto 0.7.0 Downloading
--2019-08-22 17:52:37--  https://github.com/capnproto/capnproto/archive/v0.7.0/capnproto-0.7.0.tar.gz
Resolving github.com (github.com)... 140.82.118.4
Connecting to github.com (github.com)|140.82.118.4|:443... connected.
HTTP request sent, awaiting response... 302 Found
Location: https://codeload.github.com/capnproto/capnproto/tar.gz/v0.7.0 [following]
--2019-08-22 17:52:37--  https://codeload.github.com/capnproto/capnproto/tar.gz/v0.7.0
Resolving codeload.github.com (codeload.github.com)... 140.82.114.10
Connecting to codeload.github.com (codeload.github.com)|140.82.114.10|:443... connected.
HTTP request sent, awaiting response... 200 OK
Length: unspecified [application/x-gzip]
Saving to: '/home/buildroot/autobuild/run/instance-0/output/build/.capnproto-0.7.0.tar.gz.oUCf4k/output'

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2019-08-22 17:52:39 (1.94 MB/s) - '/home/buildroot/autobuild/run/instance-0/output/build/.capnproto-0.7.0.tar.gz.oUCf4k/output' saved [1983172]

capnproto-0.7.0.tar.gz: OK (sha256: 76c7114a3d142ad08b7208b3964a26e72a6320ee81331d3f0b87569fc9c47a28)
>>> host-capnproto 0.7.0 Extracting
gzip -d -c /home/buildroot/autobuild/run/instance-0/dl/capnproto/capnproto-0.7.0.tar.gz | tar --strip-components=1 -C /home/buildroot/autobuild/run/instance-0/output/build/host-capnproto-0.7.0   -xf -
>>> host-capnproto 0.7.0 Patching
>>> host-capnproto 0.7.0 Updating config.sub and config.guess
for file in config.guess config.sub; do for i in $(find /home/buildroot/autobuild/run/instance-0/output/build/host-capnproto-0.7.0 -name $file); do cp support/gnuconfig/$file $i; done; done
>>> host-capnproto 0.7.0 Configuring
>>> host-capnproto 0.7.0 Autoreconfiguring
libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, 'build-aux'.
libtoolize: copying file 'build-aux/ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4'.
libtoolize: copying file 'm4/libtool.m4'
libtoolize: copying file 'm4/ltoptions.m4'
libtoolize: copying file 'm4/ltsugar.m4'
libtoolize: copying file 'm4/ltversion.m4'
libtoolize: copying file 'm4/lt~obsolete.m4'
configure.ac:55: installing 'build-aux/compile'
configure.ac:60: installing 'build-aux/config.guess'
configure.ac:60: installing 'build-aux/config.sub'
configure.ac:17: installing 'build-aux/install-sh'
configure.ac:17: installing 'build-aux/missing'
Makefile.am: installing 'build-aux/depcomp'
parallel-tests: installing 'build-aux/test-driver'
>>> host-capnproto 0.7.0 Patching libtool
patching file /home/buildroot/autobuild/run/instance-0/output/build/host-capnproto-0.7.0/c++/build-aux/ltmain.sh
Hunk #1 succeeded at 2694 (offset 7 lines).
Hunk #2 succeeded at 4284 (offset 7 lines).
Hunk #3 succeeded at 6579 (offset 25 lines).
Hunk #4 succeeded at 6589 (offset 25 lines).
Hunk #5 succeeded at 6882 (offset 25 lines).
Hunk #6 succeeded at 7174 (offset 25 lines).
Hunk #7 succeeded at 8140 (offset 28 lines).
Hunk #8 succeeded at 10769 (offset 59 lines).
(cd /home/buildroot/autobuild/run/instance-0/output/build/host-capnproto-0.7.0/c++ && rm -rf config.cache; PATH="/home/buildroot/autobuild/run/instance-0/output/host/bin:/home/buildroot/autobuild/run/instance-0/output/host/sbin:/usr/local/bin:/usr/bin:/bin:/usr/local/games:/usr/games" PKG_CONFIG="/home/buildroot/autobuild/run/instance-0/output/host/bin/pkg-config" PKG_CONFIG_SYSROOT_DIR="/" PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1 PKG_CONFIG_ALLOW_SYSTEM_LIBS=1 PKG_CONFIG_LIBDIR="/home/buildroot/autobuild/run/instance-0/output/host/lib/pkgconfig:/home/buildroot/autobuild/run/instance-0/output/host/share/pkgconfig" AR="/usr/bin/ar" AS="/usr/bin/as" LD="/usr/bin/ld" NM="/usr/bin/nm" CC="/usr/bin/gcc" GCC="/usr/bin/gcc" CXX="/usr/bin/g++" CPP="/usr/bin/cpp" OBJCOPY="/usr/bin/objcopy" RANLIB="/usr/bin/ranlib" CPPFLAGS="-I/home/buildroot/autobuild/run/instance-0/output/host/include" CFLAGS="-O2 -I/home/buildroot/autobuild/run/instance-0/output/host/include" CXXFLAGS="-O2 -I/home/buildroot/autobuild/run/instance-0/output/host/include" LDFLAGS="-L/home/buildroot/autobuild/run/instance-0/output/host/lib -Wl,-rpath,/home/buildroot/autobuild/run/instance-0/output/host/lib" INTLTOOL_PERL=/usr/bin/perl CFLAGS="-O2 -I/home/buildroot/autobuild/run/instance-0/output/host/include" LDFLAGS="-L/home/buildroot/autobuild/run/instance-0/output/host/lib -Wl,-rpath,/home/buildroot/autobuild/run/instance-0/output/host/lib"  CONFIG_SITE=/dev/null ./configure --prefix="/home/buildroot/autobuild/run/instance-0/output/host" --sysconfdir="/home/buildroot/autobuild/run/instance-0/output/host/etc" --localstatedir="/home/buildroot/autobuild/run/instance-0/output/host/var" --enable-shared --disable-static --disable-gtk-doc --disable-gtk-doc-html --disable-doc --disable-docs --disable-documentation --disable-debug --with-xmlto=no --with-fop=no --disable-nls --disable-dependency-tracking   )
configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-gtk-doc-html, --disable-doc, --disable-docs, --disable-documentation, --disable-debug, --with-xmlto, --with-fop, --disable-nls
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking whether UID '1000' is supported by ustar format... yes
checking whether GID '1000' is supported by ustar format... yes
checking how to create a ustar tar archive... gnutar
checking for gcc... /usr/bin/gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /usr/bin/gcc accepts -g... yes
checking for /usr/bin/gcc option to accept ISO C89... none needed
checking whether /usr/bin/gcc understands -c and -o together... yes
checking for style of include used by make... GNU
checking dependency style of /usr/bin/gcc... none
checking whether we are using the GNU C++ compiler... yes
checking whether /usr/bin/g++ accepts -g... yes
checking dependency style of /usr/bin/g++... none
checking whether /usr/bin/g++ supports C++14 features by default... no
checking whether /usr/bin/g++ supports C++14 features with -std=gnu++14... no
checking whether /usr/bin/g++ supports C++14 features with -std=gnu++1y... no
checking whether /usr/bin/g++ supports C++14 features with -std=c++14... no
checking whether /usr/bin/g++ supports C++14 features with -std=c++1y... no
configure: error: *** A compiler with support for C++14 language features is required.
make: *** [/home/buildroot/autobuild/run/instance-0/output/build/host-capnproto-0.7.0/.stamp_configured] Error 1
make: Leaving directory `/home/buildroot/autobuild/run/instance-0/buildroot'