I'm sorry for bugging people, and I have Googled this question, but the
answers I'm finding are really old and I know there are updates to
mspgcc since most of the answers were posted....

I am trying to port 3 different programs from IAR to MSPGCC for work.
I'm using the latest released version, but 2 of the 3 won't fit even
when compiling using optimizations: -mmcu=$(MCU) -g -Os -Wall
-fdata-sections -ffunction-sections  and linked with --no-keep-memory
-Wl,-gc-sections

Does anyone have any ideas how I can further optimize the compiler
(other than rewriting - which I've been trying to do)?

With an MSP430F149 processor, under IAR, the code compiles and links
(Code = 45858, data = 3000, CONST=4935)

Under GCC, it won't link because '.rodata won't fit into region rom' and
rom overflows by 796 bytes.

Examining the Map file shows .rodata is 0x1a66 in size, .text is 0xc240
in size, .bss is 0x712

Any ideas how to make the libraries or optimizer make smaller code?

adam

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