[Buildroot] [buildroot 0001542]: arm gcc-4.1.2 + oabi + soft floats fails to build

[Ivan Kuten]

> Summary:                    arm gcc-4.1.2 + oabi + soft floats fails to build
> Description: 
> gcc 4.1.2 fails to build for OABI with soft floats enabled, with references
> to missing float functions.
> 
> The patch I supplied for gcc-4.2.1 works as-is for 4.1.2 also.
> So copying toolchain/gcc/4.2.1/910-soft-float.patch to toolchain/gcc/4.1.2
> will fix this.
> 

Hi Hamish,

I tried to apply your patch 910-soft-float.patch

BR2_ARM_TYPE="ARM920T"
BR2_ARM_OABI=y
# BR2_ARM_EABI is not set
BR2_ARCH="arm"
..
BR2_GCC_VERSION_4_1_2=y
..
BR2_GCC_VERSION="4.1.2"
BR2_SOFT_FLOAT=y

It compiled successfully but

readelf -h build_arm/staging_dir/lib/libuClibc-0.9.29.so
ELF Header:
  Magic:   7f 45 4c 46 01 01 01 61 00 00 00 00 00 00 00 00
  Class:                             ELF32
  Data:                              2's complement, little endian
  Version:                           1 (current)
  OS/ABI:                            ARM
  ABI Version:                       0
  Type:                              DYN (Shared object file)
  Machine:                           ARM
  Version:                           0x1
  Entry point address:               0xa520
  Start of program headers:          52 (bytes into file)
  Start of section headers:          525932 (bytes into file)
  Flags:                             0x202, has entry point, GNU EABI, software FP
  Size of this header:               52 (bytes)
  Size of program headers:           32 (bytes)
  Number of program headers:         6
  Size of section headers:           40 (bytes)
  Number of section headers:         23
  Section header string table index: 22


Seems I get anyway EABI not OABI. Can you confirm this?

seems like "arm gcc-4.1.2 + oabi + soft floats fails to build"
should be treated as "arm gcc-4.1.2 + EABI + soft floats fails to build" ?



Best regards,
Ivan
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Embedded Linux engineer,
Promwad Company: http://www.promwad.com/
Homepage : http://www.ivankuten.com/
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