Re: Using custom linker scripts with mspgcc

Of course a few minutes after posting I discovered the solution.
There is an msp430.x that defines the majority of the common sections,
which also includes the memory.x and periph.x.  I put them all into
the same directory, then linked with the following options for
success:
 -T msp430.x

Thomas Taranowski | 425-442-9209 | skype: thomas.taranowski | baringforge.com



On Sat, Jun 22, 2013 at 11:39 PM, Thomas Taranowski <[email protected]> wrote:
> I'm trying to integrate some custom linker sections using mspgcc using
> the following faq:
> http://mspgcc.sourceforge.net/faq/x71.html
>
> Which tells me to do this:
> msp430-gcc -Wl,--section-start -Wl,-T linker_script.x [other options and files]
>
> However, when I do that, I get the following error:
> /usr/local/msp430/bin/../lib/gcc/msp430/4.7.0/../../../../msp430/bin/ld:
> invalid argument to option "--section-start"
>
> if I leave that off, I get:
> /usr/local/msp430/bin/../lib/gcc/msp430/4.7.0/../../../../msp430/bin/ld:
> internal error emsp430.c 123
>
> Which leads me to believe that either the --section-start is special
> for the msp430-gcc, or the linker isn't accepting the multiple -T
> options, and accumulating as expected.
>
> Any ideas on what I could be doing wrong?  Examples of what other
> folks are doing might be helpful.
>
> mspgcc version:
> msp430-gcc (GCC) 4.7.0 20120322 (mspgcc dev 20120911)
>
>
> The linker command line I'm using:
> /usr/local/msp430/bin/msp430-gcc   -mmcu=msp430fr5969
> -ffunction-sections -fdata-sections -DGCC_MSP430 -Wextra
> -fno-exceptions -fno-rtti -fno-enforce-eh-specs -lfp -lm -g
> -mmcu=msp430fr5969 -Wl,--section-start -Wl,-T
> /home/tom/fsw/build_tools/ldscripts/t3g/memory.x -Wl,-T
> /home/tom/fsw/build_tools/ldscripts/t3g/periph.x
> CMakeFiles/i2c_write_test_main.dir/local/i2c_write_test_main.cpp.obj
> -o ../../../product/msp430fr5969-msp430-gnu/Debug/bin/i2c_write_test_main
>  -L/home/tom/fsw/product/msp430fr5969-msp430-gnu/Debug/lib
> -L/home/tom/fsw/product/msp430fr5969-msp430-gnu/Debug/usr/lib
> ../../../product/msp430fr5969-msp430-gnu/Debug/lib/libt3_manager.a
> -Wl,--start-group
> ../../../product/msp430fr5969-msp430-gnu/Debug/lib/libcore.a
> ../../../product/msp430fr5969-msp430-gnu/Debug/lib/libbsp_msp430.a
> ../../../product/msp430fr5969-msp430-gnu/Debug/lib/libevent_log.a
> ../../../product/msp430fr5969-msp430-gnu/Debug/lib/libi2c_driver.a
> -Wl,--end-group
>
>
>
>
>
> Thomas Taranowski | 425-442-9209 | skype: thomas.taranowski | baringforge.com

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