How to make g++ (avr-g++) output error line number and column?

i believe -g turn on debug information output:

09-19 19:31:34.788: INFO/System.out(24948): /data/data/app/sdk/hardware/tools/avr/bin/avr-g++ -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -mmcu=atmega328p -DF_CPU=16000000L -MMD -DUSB_VID=null -DUSB_PID=null -DARDUINO=105 -I/data/data/app/sdk/hardware/arduino/cores/arduino -I/data/data/app/sdk/hardware/arduino/variants/standard /data/data/app/build/Blink.cpp -o /data/data/app/build/Blink.cpp.o09-19 19:31:34.828: WARN/System.err(24948): /data/data/app/sdk/hardware/tools/avr/bin/avr-g++[1]: syntax error: ')' unexpected

not sure the command-line is build correctly and some arguments can be missed but it's arduino IDE code.

why error line number and column is missing and how can i switch it on?