cross compile dronity for Android 4.4 failed

[l3gi0nQQ]

when i tried to Cross compile Dronity for platform 19 (Android 4.4) , i encountered this error: ''' syscalls/prctl.c:13:27: fatal error: linux/seccomp.h: No such file or directory #include "linux/seccomp.h" ^ compilation terminated. Makefile:108: recipe for target 'syscalls/prctl.o' failed make: *** [syscalls/prctl.o] Error 1 '''

i found there is no seccomp.h file in standalone toolchain dict.

then i tried ndk r10e, r11,r12,r13,r14, also got the same error

at last, i tried ndk r15-beta, i got this error: ''' undefined reference to 'rand' ''' and some other undefined errors, i can't remember.

any suggestion?