mirror of
https://github.com/Telecominfraproject/wlan-ap.git
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100 lines
3.2 KiB
Diff
100 lines
3.2 KiB
Diff
From 1eb36bc2be4b54e4e4e4ceffc01be78d996205f0 Mon Sep 17 00:00:00 2001
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From: Felix Fietkau <nbd@nbd.name>
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Date: Sun, 17 Oct 2021 17:50:53 +0200
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Subject: [PATCH 052/102] tools/llvm-bpf: add llvm+clang build suitable for
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compiling code to eBPF
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Preparation for building packages that ship eBPF code
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Signed-off-by: Felix Fietkau <nbd@nbd.name>
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---
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toolchain/Config.in | 7 +++++++
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tools/Makefile | 2 ++
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tools/llvm-bpf/Makefile | 36 ++++++++++++++++++++++++++++++++++++
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3 files changed, 45 insertions(+)
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create mode 100644 tools/llvm-bpf/Makefile
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diff --git a/toolchain/Config.in b/toolchain/Config.in
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index 6dda9af92d..9062d6f65e 100644
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--- a/toolchain/Config.in
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+++ b/toolchain/Config.in
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@@ -37,6 +37,13 @@ menuconfig TARGET_OPTIONS
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Most people will answer N.
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+config BUILD_LLVM_BPF
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+ bool "Build LLVM toolchain for eBPF" if DEVEL
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+ help
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+ If enabled, a LLVM toolchain for building eBPF binaries will be built.
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+ If this is not enabled, eBPF packages can only be built if the host
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+ has a suitable toolchain
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+
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menuconfig EXTERNAL_TOOLCHAIN
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bool
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diff --git a/tools/Makefile b/tools/Makefile
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index a2665dbc9a..83147014c6 100644
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--- a/tools/Makefile
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+++ b/tools/Makefile
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@@ -35,6 +35,7 @@ tools-$(CONFIG_TARGET_mxs) += elftosb sdimage
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tools-$(CONFIG_TARGET_tegra) += cbootimage cbootimage-configs
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tools-$(CONFIG_USES_MINOR) += kernel2minor
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tools-$(CONFIG_USE_SPARSE) += sparse
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+tools-$(CONFIG_BUILD_LLVM_BPF) += llvm-bpf
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# builddir dependencies
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$(curdir)/autoconf/compile := $(curdir)/m4/compile
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@@ -57,6 +58,7 @@ $(curdir)/libelf/compile := $(curdir)/libtool/compile
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$(curdir)/libressl/compile := $(curdir)/pkgconf/compile
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$(curdir)/libtool/compile := $(curdir)/m4/compile $(curdir)/autoconf/compile $(curdir)/automake/compile $(curdir)/missing-macros/compile
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$(curdir)/lzma-old/compile := $(curdir)/zlib/compile
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+$(curdir)/llvm-bpf/compile := $(curdir)/cmake/compile
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$(curdir)/make-ext4fs/compile := $(curdir)/zlib/compile
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$(curdir)/missing-macros/compile := $(curdir)/autoconf/compile
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$(curdir)/mkimage/compile += $(curdir)/libressl/compile
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diff --git a/tools/llvm-bpf/Makefile b/tools/llvm-bpf/Makefile
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new file mode 100644
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index 0000000000..a5ba2a4cb7
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--- /dev/null
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+++ b/tools/llvm-bpf/Makefile
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@@ -0,0 +1,36 @@
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+#
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+# Copyright (C) 2006-2016 OpenWrt.org
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+#
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+# This is free software, licensed under the GNU General Public License v2.
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+# See /LICENSE for more information.
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+#
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+include $(TOPDIR)/rules.mk
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+
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+PKG_NAME:=llvm-project
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+PKG_VERSION:=13.0.0
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+PKG_RELEASE:=1
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+
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+PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).src.tar.xz
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+PKG_SOURCE_URL:=https://github.com/llvm/llvm-project/releases/download/llvmorg-$(PKG_VERSION)
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+PKG_HASH:=6075ad30f1ac0e15f07c1bf062c1e1268c241d674f11bd32cdf0e040c71f2bf3
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+
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+HOST_BUILD_DIR:=$(BUILD_DIR_HOST)/$(PKG_NAME)-$(PKG_VERSION).src
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+
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+HOST_BUILD_PARALLEL:=1
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+
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+CMAKE_BINARY_SUBDIR := build
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+CMAKE_SOURCE_SUBDIR := llvm
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+
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+include $(INCLUDE_DIR)/host-build.mk
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+include $(INCLUDE_DIR)/cmake.mk
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+
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+CMAKE_HOST_OPTIONS += \
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+ -DLLVM_ENABLE_BINDINGS=OFF \
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+ -DLLVM_INCLUDE_DOCS=OFF \
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+ -DLLVM_INCLUDE_EXAMPLES=OFF \
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+ -DLLVM_INCLUDE_TESTS=OFF \
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+ -DLLVM_ENABLE_PROJECTS="clang;lld" \
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+ -DLLVM_TARGETS_TO_BUILD=BPF \
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+ -DCLANG_BUILD_EXAMPLES=OFF
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+
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+$(eval $(call HostBuild))
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--
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2.25.1
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