Test If enumeration can be used in preprocessor define

test-enum-as-define.c

#include <stdio.h>

enum fe_caps {
        FE_IS_STUPID                    = 0,
        FE_CAN_INVERSION_AUTO           = 0x1,
        FE_CAN_FEC_1_2                  = 0x2,
        FE_CAN_FEC_2_3                  = 0x4,
        FE_CAN_FEC_3_4                  = 0x8,
        FE_CAN_FEC_4_5                  = 0x10,
        FE_CAN_FEC_5_6                  = 0x20,
        FE_CAN_FEC_6_7                  = 0x40,
        FE_CAN_FEC_7_8                  = 0x80,
        FE_CAN_FEC_8_9                  = 0x100,
        FE_CAN_FEC_AUTO                 = 0x200,
        FE_CAN_QPSK                     = 0x400,
        FE_CAN_QAM_16                   = 0x800,
        FE_CAN_QAM_32                   = 0x1000,
        FE_CAN_QAM_64                   = 0x2000,
        FE_CAN_QAM_128                  = 0x4000,
        FE_CAN_QAM_256                  = 0x8000,
        FE_CAN_QAM_AUTO                 = 0x10000,
        FE_CAN_TRANSMISSION_MODE_AUTO   = 0x20000,
        FE_CAN_BANDWIDTH_AUTO           = 0x40000,
        FE_CAN_GUARD_INTERVAL_AUTO      = 0x80000,
        FE_CAN_HIERARCHY_AUTO           = 0x100000,
        FE_CAN_8VSB                     = 0x200000,
        FE_CAN_16VSB                    = 0x400000,
        FE_HAS_EXTENDED_CAPS            = 0x800000,   /* We need more bitspace for newer APIs, indicate this. */
        FE_CAN_MULTISTREAM              = 0x4000000,  /* frontend supports multistream filtering */
        FE_CAN_TURBO_FEC                = 0x8000000,  /* frontend supports "turbo fec modulation" */
        FE_CAN_2G_MODULATION            = 0x10000000, /* frontend supports "2nd generation modulation" (DVB-S2) */
        FE_NEEDS_BENDING                = 0x20000000, /* not supported anymore, don't use (frontend requires frequency bending) */
        FE_CAN_RECOVER                  = 0x40000000, /* frontend can recover from a cable unplug automatically */
        FE_CAN_MUTE_TS                  = 0x80000000  /* frontend can stop spurious TS data output */
};

int main()
{
#ifdef FE_CAN_MULTISTREAM
        printf("FE_CAN_MULTISTREAM is defined!\n");
#else
        printf("FE_CAN_MULTISTREAM is not defined!\n");
#endif
        return 0;
}