arm and -msoft-float

arm and -msoft-float

[Michael Butts]

I am trying to build an arm-elf toolset using gcc
2.95.3, binutils 2.11.2 and newlib 1.9.0 on a FreeBSD
4.4 system.  

I am able to build everything successfully, but cannot
get soft-float support.

binutils was configured using:

--prefix=/usr/local/cross_dev/arm --target=arm-elf

In the gcc-2.95.3 dir, I created a link to
../newlib-1.9.0/newlib and configured as:

--prefix=/usr/local/cross_dev/arm --target=arm-elf
--enable-multilib --with-newlib

Before making gcc, I went into the gcc dir and
uncommented the lines in the Makefile:

MULTILIB_OPTIONS = mlittle-endian/mbig-endian
mhard-float/msoft-float mapcs-32/mapcs-26
fno-leading-underscore/fleading-underscore

MULITLIB_DIRNAMES = le be fpu soft 32bit 26bit elf
under

After make/install, I end up with the following
directories in the arm/arm-elf/lib dir:

be fpu 26bit elf under

No soft!

When building my source code:

/usr/local/cross_dev/arm/bin/arm-elf-ld: Error:
memcpy.o uses hard floating point, whereas hotrod.elf
uses soft floating point
File in wrong format: failed to merge target specific
data of file
/usr/local/cross_dev/arm/arm-elf/lib/be/soft/libc.a(memcpy.o)

Any ideas on how to get soft-float support?

Thanks,

Mike



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arm and -msoft-float

[Hugo Villeneuve]

Hi,

	With gcc-3.2.2 and arm-elf target, I have specified:
		MULTILIB_OPTIONS     = marm/mthumb msoft-float
		MULTILIB_DIRNAMES    = arm thumb soft
		MULTILIB_EXCEPTIONS  = 

	in the file gcc-3.2.2/gcc/config/arm/t-arm-elf

	After compiling/installing gcc, I see the following directories in the ${PREFIX}/lib/gcc-lib/arm-elf/3.2.2/ dir:

	arm thumb

	but there is no "soft" directory... Why?


	Hugo.

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 Hugo Villeneuve

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 http://pages.infinit.net/hugovil/
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