[En-Nut-Discussion] Strange newlib syscall dependencies / linker problems when using 64bit integers

[Uwe Bonnes]

>>>>> "Ulrich" == Ulrich Prinz <ulrich.prinz at googlemail.com> writes:

    Ulrich> Hi Ole, I never had this kind of problem, but I never used 64
    Ulrich> bit variables...

    Ulrich> But... I compared the local nut/os version for cortexM3 with the
    Ulrich> sourceforge one and the only bigger difference is the double -L
    Ulrich> parameter for the linker.  You remember the problem I have that
    Ulrich> building a simple uart example results in 14k code instead of 6k
    Ulrich> or less in older versions?  I guess (but didn't test, cause lack
    Ulrich> of time) that this might be the problem.

    Ulrich> Can you test again with LDFLAGS =
    Ulrich> ...-T'path/to/linker/ldscript.ld' ... -L'path_to_libs' instead
    Ulrich> of LDFLAGS = ... -L'path/to/linker/' -T'ldscript.ld'
    Ulrich> ... -L'path_to_libs'

    Ulrich> It's just a feeling...  Linker might test the first search path
    Ulrich> only and include stdlibs on failing result even the nutos libs
    Ulrich> exist in the second one.



The order doesn't seem to make a difference:
* Order as produced by our tree:

arm-none-eabi-gcc owi_test.o owi_timer.o -mcpu=cortex-m3 -mthumb -mlittle-endian -D__CORTEX__ -nostartfiles -L../../../devnut_m3n_git/nut/arch/cm3/ldscripts -Tstm32f107xC_flash.ld -Wl,-Map=owi_test.map,--cref,--gc-sections -L../.././lib -Wl,--start-group ../.././lib/nutinit.o -lnutcrt -lnutarch -lnutdev -lnutos -lnutdev -lnutarch   -Wl,--end-group -o owi_test.elf
 > arm-none-eabi-size owi_test.elf
   text    data     bss     dec     hex filename
  24296     320    1380   25996    658c owi_test.elf

* All linker specific files at the end:
> arm-none-eabi-gcc owi_test.o owi_timer.o -mcpu=cortex-m3 -mthumb -mlittle-endian -D__CORTEX__ -nostartfiles -L../.././lib ../.././lib/nutinit.o -lnutcrt -lnutarch -lnutdev -lnutos -lnutdev -lnutarch -nostartfiles -L../../../devnut_m3n_git/nut/arch/cm3/ldscripts -Tstm32f107xC_flash.ld -Wl,-Map=owi_test.map,--cref,--gc-sections -Wl,--start-group -Wl,--end-group -o owi_test.elf

> arm-none-eabi-size owi_test.elf
  text    data     bss     dec     hex filename
  24296     320    1380   25996    658c owi_test.elf

-- 
Uwe Bonnes                bon at elektron.ikp.physik.tu-darmstadt.de

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