u8g2_SetFont(..) fails with ...region `ram' overflowed by XXXX bytes

[samsam4]

WICED6.2.1 with CYW20719 fails on u8g2_SetFont(..) with:

Linking target ELF
....\43xxx_Wi-Fi\tools\ARM_GNU\Win32\bin\arm-none-eabi-ld: ../build/bsc01-CYBT_413034_EVAL-rom-ram-Wiced-release/A_20719B1-bsc01-rom-ram-spar.elf section .rodata' will not fit in region ram'
....\43xxx_Wi-Fi\tools\ARM_GNU\Win32\bin\arm-none-eabi-ld: region `ram' overflowed by 126956 bytes

I found this posting and this example makefile
Is there anything different from what is posted before for STM , I need to make in order to make WICED/CYW20719 makefile.mk to work with u8g2 or u8x8 ?
Thanks

[olikraus]

The toolchain is the same.
You need to use
-ffunction-sections -fdata-sections (compile step)
and
-Wl,--gc-sections (linking step)

[samsam4]

I already add in the projects makefile.mk
C_FLAGS += -ffunction-sections -fdata-sections

still cant figure yet how to add -Wl,--gc-sections (many hierarchical makefile-s) :( and the variables names differ, but the code works so far even without the last flags :)
Thanks

[olikraus]

Ok...