[Buildroot] [PATCH v2 1/3] toolchain/toolchain-buildroot: enable uclibc for riscv64

[Romain Naour]

Le 13/07/2020 à 23:50, Romain Naour a écrit :
> Hi Mark,
> 
> Le 10/05/2020 à 17:43, Mark Corbin a écrit :
>> We can enable uclibc for RISC-V 64 bit now that it has been
>> bumped from v1.0.32 to v1.0.34.
>>
>> Uclibc has had basic support for RISC-V 64 bit since v1.0.31, but
>> shared library and TLS/NPTL support has only been available since
>> v1.0.33.
>>
>> This update has been tested using qemu_riscv64_virt_defconfig and
>> the Buildroot host QEMU.
> 
> Since uclibc-ng is the default libc in Buildroot, enabling riscv64 change
> implicitly the libc used by qemu_riscv64_virt_defconfig.
> 
> Before this patch qemu_riscv64_virt_defconfig used glibc, after it use uclibc-ng
> (like other defconfig does).
> 
> Maybe add a commit before this one enabling explicitly glibc in
> qemu_riscv64_virt_defconfig, then add this commit and finally a third commit
> switching qemu_riscv64_virt_defconfig from glibc to uclibc-ng.

Same for hifive_unleashed_defconfig.

Best regards,
Romain

> 
> Anyway it's good to see new architecture supported in uclibc-ng.
> 
> Best regards,
> Romain
> 
>>
>> Signed-off-by: Mark Corbin <mark at dibsco.co.uk>
>> ---
>> Changes v1 -> v2:
>>   - use BR2_RISCV_64 instead of (BR2_riscv && BR2_ARCH_IS_64)
>>     (Thomas P)
>> ---
>>  package/uclibc/Config.in                |  1 +
>>  toolchain/toolchain-buildroot/Config.in | 13 +++++++------
>>  2 files changed, 8 insertions(+), 6 deletions(-)
>>
>> diff --git a/package/uclibc/Config.in b/package/uclibc/Config.in
>> index de2885bc92..f4d4f06462 100644
>> --- a/package/uclibc/Config.in
>> +++ b/package/uclibc/Config.in
>> @@ -101,6 +101,7 @@ config BR2_UCLIBC_TARGET_ARCH
>>  	default "mips"	   if BR2_mips || BR2_mipsel || BR2_mips64 || BR2_mips64el
>>  	default "or1k"     if BR2_or1k
>>  	default "powerpc"  if BR2_powerpc
>> +	default "riscv64"  if BR2_RISCV_64
>>  	default "sh"	   if BR2_sh
>>  	default "sparc"	   if BR2_sparc
>>  	default "xtensa"   if BR2_xtensa
>> diff --git a/toolchain/toolchain-buildroot/Config.in b/toolchain/toolchain-buildroot/Config.in
>> index 8c33b2b4dd..3b2da333a2 100644
>> --- a/toolchain/toolchain-buildroot/Config.in
>> +++ b/toolchain/toolchain-buildroot/Config.in
>> @@ -27,12 +27,13 @@ choice
>>  
>>  config BR2_TOOLCHAIN_BUILDROOT_UCLIBC
>>  	bool "uClibc-ng"
>> -	depends on BR2_aarch64 || BR2_aarch64_be || BR2_arcle   || BR2_arceb  || \
>> -		   BR2_arm     || BR2_armeb    || \
>> -		   BR2_i386    || BR2_m68k   || BR2_microblaze || \
>> -		   BR2_mips    || BR2_mipsel || BR2_mips64 || BR2_mips64el || \
>> -		   BR2_or1k    || BR2_powerpc || BR2_sh2a   || BR2_sh4	   || \
>> -		   BR2_sh4eb   || BR2_sparc   || BR2_xtensa || BR2_x86_64
>> +	depends on BR2_aarch64 || BR2_aarch64_be || BR2_arcle      || BR2_arceb    || \
>> +		   BR2_arm     || BR2_armeb      || \
>> +		   BR2_i386    || BR2_m68k       || BR2_microblaze || \
>> +		   BR2_mips    || BR2_mipsel     || BR2_mips64     || BR2_mips64el || \
>> +		   BR2_or1k    || BR2_powerpc    || BR2_RISCV_64   || \
>> +		   BR2_sh2a    || BR2_sh4	 || BR2_sh4eb      || BR2_sparc    || \
>> +		   BR2_xtensa  || BR2_x86_64
>>  	select BR2_TOOLCHAIN_USES_UCLIBC
>>  	help
>>  	  This option selects uClibc-ng as the C library for the
>>
>