large ro-data size with keil compiling

[sp4rr0w]

Hello

I am trying to compile a project for nRF25840 on a custom board. Build is succesfull but i am getting a 9mb ro-data on the output which means i cant flash it to the chip as it only has 1mb of ROM.  
Im using:

-uVision 5.33 with keil v5.06 update 7
-nRF SDK 15.2.0. 
-DeviceFamilyPack 8.38

any ideas what am i missing?

Tnx

[Dmitry]

Hi,

you can enable linker listing in project settings, then look at map file to find an object that takes so much space.

[sp4rr0w]

Hi. Thank you for a fast reply. I have enabled the linker listing and this is what i found in map file:

.constdata                               0x0003f564   Section    9261485  u8g2_fonts.o(.constdata) 

I have an oled display connected to the board and it looks like its a graphics library that takes so much space. I am fairly new to nRF and i got the project from a previous developer which is unresponsive. Do i have any options to reduce the size that this library takes? 

[sp4rr0w]

I have solved my problem with a LEVEL 1 (-O1) Optimization setting under the C/C++ tab in Options for Target

Tnx for help

Regards,S