>>> shairport-sync 3.3.7 Extracting
gzip -d -c /tmp/instance-3/dl/shairport-sync/shairport-sync-3.3.7.tar.gz | tar --strip-components=1 -C /tmp/instance-3/output-1/build/shairport-sync-3.3.7   -xf -
>>> shairport-sync 3.3.7 Patching
>>> shairport-sync 3.3.7 Updating config.sub and config.guess
for file in config.guess config.sub; do for i in $(find /tmp/instance-3/output-1/build/shairport-sync-3.3.7 -name $file); do cp support/gnuconfig/$file $i; done; done
>>> shairport-sync 3.3.7 Configuring
>>> shairport-sync 3.3.7 Autoreconfiguring
configure.ac:21: installing './compile'
configure.ac:6: installing './install-sh'
configure.ac:6: installing './missing'
Makefile.am: installing './INSTALL'
Makefile.am: installing './depcomp'
>>> shairport-sync 3.3.7 Patching libtool
(cd /tmp/instance-3/output-1/build/shairport-sync-3.3.7/ && rm -rf config.cache && PATH="/tmp/instance-3/output-1/host/bin:/tmp/instance-3/output-1/host/sbin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin" AR="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-ar" AS="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-as" LD="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-ld" NM="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-nm" CC="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gcc" GCC="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gcc" CPP="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-cpp" CXX="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-g++" FC="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gfortran" F77="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gfortran" RANLIB="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-ranlib" READELF="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-readelf" STRIP="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-strip" OBJCOPY="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-objcopy" OBJDUMP="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-objdump" AR_FOR_BUILD="/usr/bin/ar" AS_FOR_BUILD="/usr/bin/as" CC_FOR_BUILD="/usr/bin/gcc" GCC_FOR_BUILD="/usr/bin/gcc" CXX_FOR_BUILD="/usr/bin/g++" LD_FOR_BUILD="/usr/bin/ld" CPPFLAGS_FOR_BUILD="-I/tmp/instance-3/output-1/host/include" CFLAGS_FOR_BUILD="-O2 -I/tmp/instance-3/output-1/host/include" CXXFLAGS_FOR_BUILD="-O2 -I/tmp/instance-3/output-1/host/include" LDFLAGS_FOR_BUILD="-L/tmp/instance-3/output-1/host/lib -Wl,-rpath,/tmp/instance-3/output-1/host/lib" FCFLAGS_FOR_BUILD="" DEFAULT_ASSEMBLER="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-as" DEFAULT_LINKER="/tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-ld" CPPFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64" CFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mlongcalls -mauto-litpools -Os -g0  -static" CXXFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64 -mlongcalls -mauto-litpools -Os -g0  -static -static" LDFLAGS=" -static" FCFLAGS="-mlongcalls -mauto-litpools -Os -g0 -static" FFLAGS="-mlongcalls -mauto-litpools -Os -g0 -static" PKG_CONFIG="/tmp/instance-3/output-1/host/bin/pkg-config" STAGING_DIR="/tmp/instance-3/output-1/host/xtensa-buildroot-linux-uclibc/sysroot" INTLTOOL_PERL=/usr/bin/perl ac_cv_lbl_unaligned_fail=yes ac_cv_func_mmap_fixed_mapped=yes ac_cv_func_memcmp_working=yes ac_cv_have_decl_malloc=yes gl_cv_func_malloc_0_nonnull=yes ac_cv_func_malloc_0_nonnull=yes ac_cv_func_calloc_0_nonnull=yes ac_cv_func_realloc_0_nonnull=yes lt_cv_sys_lib_search_path_spec="" ac_cv_c_bigendian=yes  LIBS="" CONFIG_SITE=/dev/null ./configure --target=xtensa-buildroot-linux-uclibc --host=xtensa-buildroot-linux-uclibc --build=x86_64-pc-linux-gnu --prefix=/usr --exec-prefix=/usr --sysconfdir=/etc --localstatedir=/var --program-prefix="" --disable-gtk-doc --disable-gtk-doc-html --disable-doc --disable-docs --disable-documentation --with-xmlto=no --with-fop=no --disable-dependency-tracking --enable-ipv6 --disable-nls --enable-static --disable-shared  --with-alsa --with-metadata --with-pipe --with-stdout --with-tinysvcmdns --with-libdaemon --with-ssl=openssl --with-convolution --with-soxr )
configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-gtk-doc-html, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop, --enable-ipv6, --disable-nls, --enable-static, --disable-shared
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for xtensa-buildroot-linux-uclibc-strip... /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-strip
checking for a thread-safe mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking for xtensa-buildroot-linux-uclibc-ranlib... /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-ranlib
checking for xtensa-buildroot-linux-uclibc-gcc... /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-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... yes
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gcc accepts -g... yes
checking for /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gcc option to accept ISO C89... none needed
checking whether /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gcc understands -c and -o together... yes
checking for style of include used by make... GNU
checking dependency style of /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gcc... none
checking whether we are using the GNU C++ compiler... yes
checking whether /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-g++ accepts -g... yes
checking dependency style of /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-g++... none
checking pkg-config is at least version 0.9.0... yes
checking for clock_gettime in -lrt... yes
checking for pthread_create in -lpthread... yes
checking for exp in -lm... yes
>>Including libpopt
checking for POPT... yes
>>Including the stdout audio back end
>>Including the pipe audio back end
checking for LIBCONFIG... yes
>>Including libdaemon support for older systems
checking for DAEMON... yes
checking encryption libraries chosen... checking for SSL... yes
>>Including support for soxr-based interpolation
checking for SOXR... yes
>>Including tinysvcmdns mDNS support
>>Including an ALSA back end
checking for ALSA... yes
>>Including convolution support
checking dependency style of /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-gcc... (cached) none
checking dependency style of /tmp/instance-3/output-1/host/bin/xtensa-buildroot-linux-uclibc-g++... (cached) none
checking for sf_open in -lsndfile... no
configure: error: Convolution support requires the sndfile library -- libsndfile1-dev suggested!
make: *** [package/pkg-generic.mk:260: /tmp/instance-3/output-1/build/shairport-sync-3.3.7/.stamp_configured] Error 1
make: Leaving directory '/tmp/instance-3/buildroot'