[OE-core] [PATCH 3/8] linux-yocto: depend on libgcc for nios2

[Khem Raj]

> On Sep 17, 2015, at 6:48 PM, Marek Vasut <marex at denx.de> wrote:
> 
> On Friday, September 18, 2015 at 03:43:50 AM, Khem Raj wrote:
>>> On Sep 17, 2015, at 6:41 PM, Marek Vasut <marex at denx.de> wrote:
>>> 
>>> On Friday, September 18, 2015 at 03:40:11 AM, Khem Raj wrote:
>>> 
>>> Hi!
>>> 
>>>>> On Sep 17, 2015, at 7:31 AM, Marek Vasut <marex at denx.de> wrote:
>>>>> 
>>>>> Make nios2 kernel depend on libgcc.
>>>>> 
>>>>> In arch/nios2/Makefile, it adds LIBGCC to libs-y:
>>>>> 
>>>>> LIBGCC          := $(shell $(CC) $(KBUILD_CFLAGS)
>>>>> -print-libgcc-file-name) libs-y          += $(LIBGCC)
>>>>> 
>>>>> In file Makefile in top directory, libs-y is assigned to to var
>>>>> KBUILD_VMLINUX_MAIN. It uses script link-vmlinux.sh to link vmlinux.o,
>>>>> and when execute function vmlinux_link() in link-vmlinux.sh,
>>>>> KBUILD_VMLINUX_MAIN is passed to ${LD}.
>>>>> 
>>>>> If build without libgcc, the value of LIBGCC is just libgcc.a without
>>>>> 
>>>>> parent directory. linux-yocto fails to build:
>>>>> |   LD      vmlinux.o
>>>>> | 
>>>>> | nios2-poky-linux-ld.bfd: cannot find libgcc.a: No such file or
>>>>> | directory
>>>>> 
>>>>> Add libgcc to nios2 kernel dependency.
>>>>> 
>>>>> Signed-off-by: Marek Vasut <marex at denx.de>
>>>>> ---
>>>>> meta/recipes-kernel/linux/linux-yocto.inc | 4 ++++
>>>>> 1 file changed, 4 insertions(+)
>>>>> 
>>>>> diff --git a/meta/recipes-kernel/linux/linux-yocto.inc
>>>>> b/meta/recipes-kernel/linux/linux-yocto.inc index 3b41a61..81ffa24
>>>>> 100644
>>>>> --- a/meta/recipes-kernel/linux/linux-yocto.inc
>>>>> +++ b/meta/recipes-kernel/linux/linux-yocto.inc
>>>>> @@ -11,6 +11,10 @@ DEPENDS_append_aarch64 = " libgcc"
>>>>> KERNEL_CC_append_aarch64 = " ${TOOLCHAIN_OPTIONS}"
>>>>> KERNEL_LD_append_aarch64 = " ${TOOLCHAIN_OPTIONS}"
>>>>> 
>>>>> +DEPENDS_append_nios2 = " libgcc"
>>>>> +KERNEL_CC_append_nios2 = " ${TOOLCHAIN_OPTIONS}"
>>>>> +KERNEL_LD_append_nios2 = " ${TOOLCHAIN_OPTIONS}”
>>>> 
>>>> Please try bitbake virtual/kernel build from scratch with this change.
>>> 
>>> What do you mean, does it break anything or what should I expect ?
>> 
>> I am not sure if there is a race, with this dependency between libgcc and
>> gcc-cross hopefully there is not but this will prove it.
> 
> Wouldn't arm64 explode in the same way then ? I'll set up the build shortly.
> 

yes it would