Sometimes errors can be nested deep in the terminal output, in fact, sometimes it is so deep that you have to scroll back several HUNDRED LINES just to find it. Consider this real example from helping a fellow developer:

[CODE]

....EDITED FOR SPACE....
....LINE# 135....

device/samsung/grandprimeve3g/libs/audio/audio_hw.c:666:34: error: 'AUDIO_DEVICE_OUT_FM_SPEAKER' undeclared here (not in a function)
{ AUDIO_DEVICE_OUT_SPEAKER | AUDIO_DEVICE_OUT_FM_SPEAKER, "speaker" },
^
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:667:75: error: 'AUDIO_DEVICE_OUT_FM_HEADSET' undeclared here (not in a function)
{ AUDIO_DEVICE_OUT_WIRED_HEADSET | AUDIO_DEVICE_OUT_WIRED_HEADPHONE | AUDIO_DEVICE_OUT_FM_HEADSET, "headphone" },
^
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:670:44: error: 'AUDIO_DEVICE_OUT_ALL_FM' undeclared here (not in a function)
{ AUDIO_DEVICE_OUT_ANLG_DOCK_HEADSET | AUDIO_DEVICE_OUT_ALL_FM, "line" },
^
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:684:32: error: invalid operands to binary | (have 'int' and 'const struct dev_names_para_t *')
{ AUDIO_DEVICE_OUT_SPEAKER | AUDIO_DEVICE_OUT_FM_SPEAKER, "speaker" },
^
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:684:5: error: initializer element is not constant
{ AUDIO_DEVICE_OUT_SPEAKER | AUDIO_DEVICE_OUT_FM_SPEAKER, "speaker" },
^
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:684:5: error: (near initialization for 'dev_names_digitalfm[0].mask')
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:685:73: error: invalid operands to binary | (have 'int' and 'const struct dev_names_para_t *')
{ AUDIO_DEVICE_OUT_WIRED_HEADSET | AUDIO_DEVICE_OUT_WIRED_HEADPHONE | AUDIO_DEVICE_OUT_FM_HEADSET, "headphone" },
^
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:685:5: error: initializer element is not constant
{ AUDIO_DEVICE_OUT_WIRED_HEADSET | AUDIO_DEVICE_OUT_WIRED_HEADPHONE | AUDIO_DEVICE_OUT_FM_HEADSET, "headphone" },
^
device/samsung/grandprimeve3g/libs/audio/audio_hw.c:685:5: error: (near initialization for 'dev_names_digitalfm[1].mask')
In file included from device/samsung/grandprimeve3g/libs/audio/audio_hw.c:810:0:

....EDITED FOR SPACE....
....LINE# 843....

build/core/binary.mk:803: recipe for target '/home/hassan/Working/LiquidDark-RRO-Layer-Ih24n/out/target/product/grandprimeve3g/obj/SHARED_LIBRARIES/audio.primary.sc8830_intermediates/audio_hw.o' failed
make: *** [/home/hassan/Working/LiquidDark-RRO-Layer-Ih24n/out/target/product/grandprimeve3g/obj/SHARED_LIBRARIES/audio.primary.sc8830_intermediates/audio_hw.o] Error 1
make: *** Waiting for unfinished jobs....

....EDITED FOR SPACE....
....LINE# 990....

device/samsung/grandprimeve3g/libs/audio/record_process/aud_proc_config.c:956:5: warning: (near initialization for 'recordeq_filter_set[0]') [-Wmissing-braces]
device/samsung/grandprimeve3g/libs/audio/record_process/aud_proc_config.c: In function 'AUDPROC_ProcessDp':
device/samsung/grandprimeve3g/libs/audio/record_process/aud_proc_config.c:1319:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(si=0;si\