>>> bridge-utils 1.7.1 Extracting
xzcat /tmp/instance-19/dl/bridge-utils/bridge-utils-1.7.1.tar.xz | tar --strip-components=1 -C /tmp/instance-19/output-1/build/bridge-utils-1.7.1   -xf -
>>> bridge-utils 1.7.1 Patching

Applying 0001-fix-build-on-musl.patch using patch: 
patching file libbridge/libbridge_devif.c
patching file libbridge/libbridge_init.c
>>> bridge-utils 1.7.1 Updating config.sub and config.guess
for file in config.guess config.sub; do for i in $(find /tmp/instance-19/output-1/build/bridge-utils-1.7.1 -name $file); do cp support/gnuconfig/$file $i; done; done
>>> bridge-utils 1.7.1 Configuring
>>> bridge-utils 1.7.1 Autoreconfiguring
configure.ac:17: warning: The macro `AC_HEADER_STDC' is obsolete.
configure.ac:17: You should run autoupdate.
./lib/autoconf/headers.m4:704: AC_HEADER_STDC is expanded from...
configure.ac:17: the top level
configure.ac:22: warning: The macro `AC_HEADER_TIME' is obsolete.
configure.ac:22: You should run autoupdate.
./lib/autoconf/headers.m4:743: AC_HEADER_TIME is expanded from...
configure.ac:22: the top level
>>> bridge-utils 1.7.1 Patching libtool
(cd /tmp/instance-19/output-1/build/bridge-utils-1.7.1/ && rm -rf config.cache && PATH="/tmp/instance-19/output-1/host/bin:/tmp/instance-19/output-1/host/sbin:/home/autobuild/make:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" AR="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gcc-ar" AS="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-as" LD="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-ld" NM="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gcc-nm" CC="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gcc" GCC="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gcc" CPP="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-cpp" CXX="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-g++" FC="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gfortran" F77="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gfortran" RANLIB="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gcc-ranlib" READELF="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-readelf" STRIP="/bin/true" OBJCOPY="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-objcopy" OBJDUMP="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-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-19/output-1/host/include" CFLAGS_FOR_BUILD="-O2 -I/tmp/instance-19/output-1/host/include" CXXFLAGS_FOR_BUILD="-O2 -I/tmp/instance-19/output-1/host/include" LDFLAGS_FOR_BUILD="-L/tmp/instance-19/output-1/host/lib -Wl,-rpath,/tmp/instance-19/output-1/host/lib" FCFLAGS_FOR_BUILD="" DEFAULT_ASSEMBLER="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-as" DEFAULT_LINKER="/tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-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  -O2 -g0 " CXXFLAGS="-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -O2 -g0 " LDFLAGS="" FCFLAGS=" -O2 -g0" FFLAGS=" -O2 -g0" PKG_CONFIG="/tmp/instance-19/output-1/host/bin/pkg-config" STAGING_DIR="/tmp/instance-19/output-1/host/mips64-buildroot-linux-gnu/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   CONFIG_SITE=/dev/null ./configure --target=mips64-buildroot-linux-gnu --host=mips64-buildroot-linux-gnu --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 --enable-shared  --with-linux-headers=/tmp/instance-19/output-1/host/mips64-buildroot-linux-gnu/sysroot/usr/include )
configure: WARNING: unrecognized options: --disable-gtk-doc, --disable-gtk-doc-html, --disable-doc, --disable-docs, --disable-documentation, --with-xmlto, --with-fop, --disable-dependency-tracking, --enable-ipv6, --disable-nls, --enable-static, --enable-shared
checking for mips64-buildroot-linux-gnu-gcc... /tmp/instance-19/output-1/host/bin/mips-img-linux-gnu-gcc
checking whether the C compiler works... no
configure: error: in `/tmp/instance-19/output-1/build/bridge-utils-1.7.1':
configure: error: C compiler cannot create executables
See `config.log' for more details
make: *** [package/pkg-generic.mk:283: /tmp/instance-19/output-1/build/bridge-utils-1.7.1/.stamp_configured] Error 77
make: Leaving directory '/tmp/instance-19/buildroot'