Debuging C code on android with gdb ?

cmi

I am attempting to debug the android native code using gdb over adb. However when trying to load a file to debug i get a error

1. "/home/dan/proj/firefly-rk3399/out/target/product/rk3399_firefly_box/symbols/system/bin/service": not in executable format: File format not recognized
   

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from what Ive been able to find in order to debug this adding LOCAL_CFLAGS += -ggdb and LOCAL_STRIP_MODULE = false to android.mk is required. however i am not sure im adding to the correct android.mk file. ive added it to /frameworks/native/cmds/android.mk
Id like to know if i am adding those flags to the correct android.mk file or
if there is a diffrent debug procedure (that allows me to create breakpoints and step through code)

my gdb debug proceedure:

1. TARGET SETUP:
   
2. $ adb shell
   
3. #gdbserver localhost:2345 service list
   
4. 
   
5. HOST SETUP:
   
6. $adb forward tcp:2345 tcp:2345
   
7. $~/proj/firefly-rk3399/prebuilts/gcc/linux-x86/arm/arm-eabi-4.8/bin/arm-eabi-gdb
   
8. 
   
9. (gdb) file ~/proj/firefly-rk3399/out/target/product/rk3399_firefly_box/symbols/system/bin/service

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For now im just trying to debug from terminal, from what ive read later on you can link it to eclipse

ryanyou205

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