c++ with ndk platform error help '_IOR' was not declared in this scope

Question

anyone can tell me why i get this error when compile cpp code with ndk:

C:/ndk/samples/fmservice/src/jni/JFmRxNative.cpp:304:24: error: expected primary-expression before 'struct'
C:/ndk/samples/fmservice/src/jni/JFmRxNative.cpp:304:24: error: '_IOR' was not declared in this scope
line 304 : res = ioctl(radio_fd,VIDIOC_QUERYCAP,&cap); character 24: VIDIOC_QUERYCAP

nd i used C:\ndk\platforms\android-14 files

Answer 1

seams i need to add this #include <sys/ioctl.h>