[Buildroot] [PATCHv6 1/5] package/llvm: add BPF backend

[Arnout Vandecappelle]

On 20/05/2021 22:04, Arnout Vandecappelle wrote:
> 
> 
> On 20/12/2020 16:11, Romain Naour wrote:
>> From: Jugurtha BELKALEM <jugurtha.belkalem at smile.fr>
>>
>> bcc is a front-end tool for eBPF :
>> https://github.com/iovisor/bcc/blob/master/README.md.
>> eBPF is the most powerful Linux tracer, and bcc
>> allows to write eBPF scripts in C and PYTHON3.
>>
>> BCC requires enabling LLVM backend BPF support.
>>
>> Signed-off-by: Jugurtha BELKALEM <jugurtha.belkalem at smile.fr>
>> Signed-off-by: Romain Naour <romain.naour at gmail.com>
>> Tested-by: Qais Yousef <qais.yousef at arm.com>
>> Reviewed-by: Qais Yousef <qais.yousef at arm.com>
>> Cc: Qais Yousef <qais.yousef at arm.com>
> 
>  Applied to master, thanks.

 I mean to next!

 Regards,
 Arnout

> 
>  Regards,
>  Arnout
> 
>> ---
>>  package/llvm/Config.in | 6 ++++++
>>  package/llvm/llvm.mk   | 5 +++++
>>  2 files changed, 11 insertions(+)
>>
>> diff --git a/package/llvm/Config.in b/package/llvm/Config.in
>> index 1d21d879da..6ec2ffcfe6 100644
>> --- a/package/llvm/Config.in
>> +++ b/package/llvm/Config.in
>> @@ -47,6 +47,12 @@ config BR2_PACKAGE_LLVM_RTTI
>>  
>>  	  https://llvm.org/docs/HowToSetUpLLVMStyleRTTI.html
>>  
>> +config BR2_PACKAGE_LLVM_BPF
>> +	bool "BPF backend"
>> +	help
>> +	  Build BPF target. Select this option if you are going
>> +	  to install bcc on the target.
>> +
>>  endif
>>  
>>  comment "llvm needs a toolchain w/ wchar, threads, C++, gcc >= 4.8, dynamic library"
>> diff --git a/package/llvm/llvm.mk b/package/llvm/llvm.mk
>> index 24d033d124..48a298191c 100644
>> --- a/package/llvm/llvm.mk
>> +++ b/package/llvm/llvm.mk
>> @@ -61,6 +61,11 @@ ifeq ($(BR2_PACKAGE_LLVM_AMDGPU),y)
>>  LLVM_TARGETS_TO_BUILD += AMDGPU
>>  endif
>>  
>> +# Build BPF backend
>> +ifeq ($(BR2_PACKAGE_LLVM_BPF),y)
>> +LLVM_TARGETS_TO_BUILD += BPF
>> +endif
>> +
>>  # Use native llvm-tblgen from host-llvm (needed for cross-compilation)
>>  LLVM_CONF_OPTS += -DLLVM_TABLEGEN=$(HOST_DIR)/bin/llvm-tblgen
>>  
>>