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Forum: ARM programming with GCC/GNU tools .rodata.str1.8 and size issues


Author: Dustin Sr (dbrazeau)
Posted on:

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When I'm linking it creates .rodata.str1.8 for a bunch of object files
that end up taking up a lot of room in memory.  Here is and example from
the map file created by the linker:

.rodata.str1.8
                0xa8040170      0x80b Targets.o
                                0x840 (size before relaxing)

I was just wondering if someone could explain to me what these are, if I
need them, and if not is there an option for the linker that will
disregard (not make)them?

Thanks
DB

Author: Martin Thomas (mthomas) (Moderator)
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Dustin Sr wrote:
> When I'm linking it creates .rodata.str1.8 for a bunch of object files
> that end up taking up a lot of room in memory.  Here is and example from
> the map file created by the linker:
>
> .rodata.str1.8
>                 0xa8040170      0x80b Targets.o
>                                 0x840 (size before relaxing)
>
> I was just wondering if someone could explain to me what these are, if I
> need them, and if not is there an option for the linker that will
> disregard (not make)them?

Not enough information. Please show at least the linker-script, the
source-code of "Targets" and the complete map-File. The
assembler-listing generated by the compiler would help too (arm-elf-gcc
-S ...). Even better: create a minimal example to reproduce this (with
all files to create it: source(s), linker-script, makefile). I expect
these are "string"-contstanst used in subroutines either explicitly
defined ("static const char[]="foo") or implicit (outputfunc("foo")).

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