[U-Boot] Recommended MIPS toolchain

[Daniel Schwierzeck <daniel.schwierzeck@gmail.com>]

On 20.08.2014 13:50, Vasili Galka wrote:
> Hi Daniel,
> 
> On Wed, Aug 20, 2014 at 1:23 PM, Daniel Schwierzeck
> <daniel.schwierzeck@gmail.com> wrote:
>>
>>
>>
>> On 20.08.2014 11:35, Vasili Galka wrote:
>>> Hi,
>>>
>>> What is the recommended tool-chain to verify compilation of MIPS boards?
>>
>> you could try
>>
>> Denx ELDK 5.5 for MIPS
>> http://www.denx.de/wiki/ELDK-5/WebHome
>>
>> or
>>
>> Mentor Sourcery CodeBench Lite Edition for MIPS ELF
>> https://sourcery.mentor.com/GNUToolchain/subscription3537?lite=MIPS
>>
>>>
>>> I tried the one from
>>> https://www.kernel.org/pub/tools/crosstool/files/bin/x86_64/4.9.0/
>>> But it does not work, throws plenty of errors about hard/soft float.
>>
>> Similar to ARM you can use the built-in libgcc implementation of U-Boot
>> with "export USE_PRIVATE_LIBGCC=yes" (before Kbuild/Kconfig) or
>> "CONFIG_USE_PRIVATE_LIBGCC=y".
>>
>> Actually you would need a full multilib toolchain with different libgcc
>> or multiple toolchains to build all BE/LE and hard-float/soft-float
>> variants. But that is not feasible, so you should always set
>> USE_PRIVATE_LIBGCC. USE_PRIVATE_LIBGCC is also required for ELDK toolchains.
>>
>> BTW: "MAKEALL -a mips" with the kernel.org toolchain and
>> USE_PRIVATE_LIBGCC works
>>
>> --
>> - Daniel
> 
> Strangely, I still fail to build.
> I'm trying on u-boot/master 6d1966e12 (dated Aug 1st 2014)
> Building with the following commands, on clean build directory:
> 
> export BUILD_DIR=/home/lab/dev/u-boot/out/all_mips
> export USE_PRIVATE_LIBGCC=yes
> export CROSS_COMPILE=mips-linux-
> ./MAKEALL -a mips

sorry if I was not accurate enough but with introduction of Kbuild
"USE_PRIVATE_LIBGCC=yes" was changed to "CONFIG_USE_PRIVATE_LIBGCC=y".
To support different U-Boot versions you should set both variants:

export USE_PRIVATE_LIBGCC=yes
export CONFIG_USE_PRIVATE_LIBGCC=y


> 
> Here is what I get with the toolchain from kernel.org:
> 
> Building qemu_mips board...
>    text       data        bss        dec        hex    filename
>  223063       8160     217752     448975      6d9cf
> /home/lab/dev/u-boot/out/all_mips/u-boot
> mips-linux-ld.bfd: Warning: u-boot uses -msoft-float (set by
> arch/mips/cpu/mips32/built-in.o),
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_lshrdi3.o)
> uses -mhard-float
> mips-linux-ld.bfd: Warning: u-boot uses -msoft-float (set by
> arch/mips/cpu/mips32/built-in.o),
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_ashldi3.o)
> uses -mhard-float
> Building qemu_mipsel board...
> make[1]: *** [u-boot] Error 1
> make: *** [sub-make] Error 2
> mips-linux-size: '/home/lab/dev/u-boot/out/all_mips/u-boot': No such file
> mips-linux-ld.bfd:
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_lshrdi3.o):
> compiled for a big endian system and target is little endian
> mips-linux-ld.bfd:
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_lshrdi3.o):
> endianness incompatible with that of the selected emulation
> mips-linux-ld.bfd: failed to merge target specific data of file
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_lshrdi3.o)
> mips-linux-ld.bfd:
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_ashldi3.o):
> compiled for a big endian system and target is little endian
> mips-linux-ld.bfd:
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_ashldi3.o):
> endianness incompatible with that of the selected emulation
> mips-linux-ld.bfd: failed to merge target specific data of file
> /usr/mips-linux/bin/../lib/gcc/mips-linux/4.9.0/libgcc.a(_ashldi3.o)
> make[1]: *** [u-boot] Error 1
> make: *** [sub-make] Error 2
> 
> 
> and here is what I get with Mentor Sourcery CodeBench Lite Edition:
> (Replacing to CROSS_COMPILE=mips-sde-elf-)
> 
> Building qemu_mips board...
> arch/mips/cpu/mips32/start.o: error adding symbols: Bad value
> make[1]: *** [u-boot] Error 1
> make: *** [sub-make] Error 2
> mips-sde-elf-size: '/home/lab/dev/u-boot/out/all_mips/u-boot': No such file
> mips-sde-elf-ld: board/qemu-mips/lowlevel_init.o: warning: linking
> abicalls files with non-abicalls files
> mips-sde-elf-ld: arch/mips/cpu/mips32/cpu.o: warning: linking abicalls
> files with non-abicalls files
> /home/lab/dev/u-boot/common/cli_simple.c: In function 'process_macros':
> /home/lab/dev/u-boot/common/cli_simple.c:73:2: warning: format '%zd'
> expects argument of type 'signed size_t', but argument 2 has type
> '__kernel_size_t' [-Wformat=]
>   debug_parser("[PROCESS_MACROS] INPUT len %zd: \"%s\"\n", strlen(input),
>   ^
> /home/lab/dev/u-boot/common/cli_simple.c:162:2: warning: format '%zd'
> expects argument of type 'signed size_t', but argument 2 has type
> '__kernel_size_t' [-Wformat=]
>   debug_parser("[PROCESS_MACROS] OUTPUT len %zd: \"%s\"\n",
>   ^
> /home/lab/dev/u-boot/lib/lzma/LzmaTools.c: In function
> 'lzmaBuffToBuffDecompress':
> /home/lab/dev/u-boot/lib/lzma/LzmaTools.c:94:5: warning: format '%zx'
> expects argument of type 'size_t', but argument 2 has type 'SizeT'
> [-Wformat=]
>      debug("LZMA: Uncompresed size............ 0x%zx\n", outSizeFull);
>      ^
> /home/lab/dev/u-boot/lib/lzma/LzmaTools.c:95:5: warning: format '%zx'
> expects argument of type 'size_t', but argument 2 has type 'SizeT'
> [-Wformat=]
>      debug("LZMA: Compresed size.............. 0x%zx\n", compressedSize);
>      ^
> /home/lab/dev/u-boot/lib/lzma/LzmaTools.c:115:5: warning: format '%zx'
> expects argument of type 'size_t', but argument 2 has type 'SizeT'
> [-Wformat=]
>      debug("LZMA: Uncompresed ................ 0x%zx\n", outProcessed);
>      ^
> /home/lab/dev/u-boot/common/cmd_nvedit.c: In function 'do_env_export':
> /home/lab/dev/u-boot/common/cmd_nvedit.c:914:3: warning: format '%zX'
> expects argument of type 'size_t', but argument 3 has type 'unsigned
> int' [-Wformat=]
>    sprintf(buf, "%zX", (size_t)len);
>    ^
> /home/lab/dev/u-boot/common/cmd_nvedit.c: In function 'do_env_import':
> /home/lab/dev/u-boot/common/cmd_nvedit.c:1047:3: warning: format '%zu'
> expects argument of type 'size_t', but argument 2 has type 'unsigned
> int' [-Wformat=]
>    printf("## Info: input data size = %zu = 0x%zX\n", size, size);
>    ^
> /home/lab/dev/u-boot/common/cmd_nvedit.c:1047:3: warning: format '%zX'
> expects argument of type 'size_t', but argument 3 has type 'unsigned
> int' [-Wformat=]
> /home/lab/dev/u-boot/lib/hashtable.c: In function 'hexport_r':
> /home/lab/dev/u-boot/lib/hashtable.c:605:2: warning: format '%zu'
> expects argument of type 'size_t', but argument 5 has type 'unsigned
> int' [-Wformat=]
>   debug("EXPORT  table = %p, htab.size = %d, htab.filled = %d, "
>   ^
> /home/lab/dev/u-boot/lib/hashtable.c:661:5: warning: format '%zu'
> expects argument of type 'size_t', but argument 2 has type 'unsigned
> int' [-Wformat=]
>      "but need %zu\n", size, totlen + 1);
>      ^
> /home/lab/dev/u-boot/lib/hashtable.c:661:5: warning: format '%zu'
> expects argument of type 'size_t', but argument 3 has type 'unsigned
> int' [-Wformat=]
> /home/lab/dev/u-boot/lib/hashtable.c: In function 'himport_r':
> /home/lab/dev/u-boot/lib/hashtable.c:793:3: warning: format '%zu'
> expects argument of type 'size_t', but argument 2 has type 'unsigned
> int' [-Wformat=]
>    debug("himport_r: can't malloc %zu bytes\n", size);
>    ^
> mips-sde-elf-ld: arch/mips/cpu/mips32/start.o: relocation R_MIPS_HI16
> against `lowlevel_init' can not be used when making a shared object;
> recompile with -fPIC
> arch/mips/cpu/mips32/start.o: error adding symbols: Bad value
> make[1]: *** [u-boot] Error 1
> make: *** [sub-make] Error 2
> 
> I would appreciate your assistance.
> 
> Best,
> Vasili
> 

-- 
- Daniel