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package/llvm: add BPF backend

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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@smile.fr>
Signed-off-by: Romain Naour <romain.naour@gmail.com>
Tested-by: Qais Yousef <qais.yousef@arm.com>
Reviewed-by: Qais Yousef <qais.yousef@arm.com>
Cc: Qais Yousef <qais.yousef@arm.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Jugurtha BELKALEM 2020-12-20 16:11:59 +01:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent ecb2ea34f3
commit 72e57b7b4b
2 changed files with 11 additions and 0 deletions
package/llvm
Config.inllvm.mk

6
package/llvm/Config.in
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@ -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"

5
package/llvm/llvm.mk
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@ -62,6 +62,11 @@ 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