[Buildroot] [RFC PATCH 1/4] llvm: Add BPF backend

Qais Yousef qais.yousef at arm.com
Tue Sep 29 10:26:15 UTC 2020


We need BPF backend to enable BPF Compiler Collection (BCC) and bpftrace
packager in later commits.

Signed-off-by: Qais Yousef <qais.yousef at arm.com>
---
 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..22d51b4e3c 100644
--- a/package/llvm/Config.in
+++ b/package/llvm/Config.in
@@ -34,6 +34,12 @@ config BR2_PACKAGE_LLVM_AMDGPU
 	  Build AMDGPU target. Select this option if you are going
 	  to install mesa3d with llvm and use Gallium Radeon driver.
 
+config BR2_PACKAGE_LLVM_BPF
+	bool "BPF backend"
+	help
+	  Build BPF target. Select this option if you want to use BPF tools
+	  like BCC on the target.
+
 config BR2_PACKAGE_LLVM_RTTI
 	bool "enable rtti"
 	help
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
 
-- 
2.17.1



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