make[4]: Entering directory '/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/build_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.16_eabi/ndppd-0.2.3'
ccache_cxx -c -Os -pipe -mcpu=arm1176jzf-s -mfpu=vfp -fno-caller-saves -fno-plt -fhonour-copts -Wno-error=unused-but-set-variable -Wno-error=unused-result -mfloat-abi=hard -iremap/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/build_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.16_eabi/ndppd-0.2.3:ndppd-0.2.3 -Wformat -Werror=format-security -fstack-protector -D_FORTIFY_SOURCE=1 -Wl,-z,now -Wl,-z,relro -std=c++0x -fno-rtti -o src/iface.o src/iface.cc
In file included from src/iface.cc:33:0:
/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/staging_dir/toolchain-arm_arm1176jzf-s+vfp_gcc-5.4.0_musl-1.1.16_eabi/include/sys/poll.h:1:2: warning: #warning redirecting incorrect #include <sys/poll.h> to <poll.h> [-Wcpp]
 #warning redirecting incorrect #include <sys/poll.h> to <poll.h>
  ^
In file included from src/iface.h:23:0,
                 from src/ndppd.h:34,
                 from src/iface.cc:41:
/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/staging_dir/toolchain-arm_arm1176jzf-s+vfp_gcc-5.4.0_musl-1.1.16_eabi/include/sys/poll.h:1:2: warning: #warning redirecting incorrect #include <sys/poll.h> to <poll.h> [-Wcpp]
 #warning redirecting incorrect #include <sys/poll.h> to <poll.h>
  ^
In file included from src/proxy.h:22:0,
                 from src/ndppd.h:35,
                 from src/iface.cc:41:
/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/staging_dir/toolchain-arm_arm1176jzf-s+vfp_gcc-5.4.0_musl-1.1.16_eabi/include/sys/poll.h:1:2: warning: #warning redirecting incorrect #include <sys/poll.h> to <poll.h> [-Wcpp]
 #warning redirecting incorrect #include <sys/poll.h> to <poll.h>
  ^
In file included from src/rule.h:22:0,
                 from src/ndppd.h:37,
                 from src/iface.cc:41:
/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/staging_dir/toolchain-arm_arm1176jzf-s+vfp_gcc-5.4.0_musl-1.1.16_eabi/include/sys/poll.h:1:2: warning: #warning redirecting incorrect #include <sys/poll.h> to <poll.h> [-Wcpp]
 #warning redirecting incorrect #include <sys/poll.h> to <poll.h>
  ^
src/iface.cc: In static member function 'static ndppd::ptr<ndppd::iface> ndppd::iface::open_pfd(const string&)':
src/iface.cc:153:5: error: narrowing conversion of '-1' from 'int' to '__u32 {aka unsigned int}' inside { } [-Wnarrowing]
     };
     ^
Makefile:37: recipe for target 'src/iface.o' failed
make[4]: *** [src/iface.o] Error 1
make[4]: Leaving directory '/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/build_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.16_eabi/ndppd-0.2.3'
Makefile:70: recipe for target '/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/build_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.16_eabi/ndppd-0.2.3/.built' failed
make[3]: *** [/build/lede-17.01/slaves/phase2/arm_arm1176jzf-s_vfp/build/sdk/build_dir/target-arm_arm1176jzf-s+vfp_musl-1.1.16_eabi/ndppd-0.2.3/.built] Error 2