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build: conditionally build llvm bpf toolchain by default
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Unless another toolchain is present (or selected), build the bpf toolchain whenever a package is selected that needs it. Signed-off-by: Felix Fietkau <nbd@nbd.name> (cherry picked from commit 6605e45676815156f0c47d4117ee401e6616fcac)
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@ -1,4 +1,4 @@
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BPF_DEPENDS := @HAS_BPF_TOOLCHAIN
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BPF_DEPENDS := @HAS_BPF_TOOLCHAIN +@NEED_BPF_TOOLCHAIN
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LLVM_VER:=
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CLANG_MIN_VER:=12
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@ -40,6 +40,7 @@ define Package/unetd/config
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bool "VXLAN support"
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depends on PACKAGE_unetd
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depends on HAS_BPF_TOOLCHAIN
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select NEED_BPF_TOOLCHAIN
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default y
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endef
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@ -40,9 +40,8 @@ menuconfig TARGET_OPTIONS
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choice BPF_TOOLCHAIN
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prompt "BPF toolchain" if DEVEL
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default BPF_TOOLCHAIN_BUILD_LLVM if BUILDBOT
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default BPF_TOOLCHAIN_PREBUILT if HAS_PREBUILT_LLVM_TOOLCHAIN
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default BPF_TOOLCHAIN_NONE
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default BPF_TOOLCHAIN_BUILD_LLVM
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config BPF_TOOLCHAIN_NONE
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bool "None"
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@ -57,7 +56,7 @@ menuconfig TARGET_OPTIONS
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bool "Use host LLVM toolchain"
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config BPF_TOOLCHAIN_BUILD_LLVM
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select USE_LLVM_BUILD
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select USE_LLVM_BUILD if NEED_BPF_TOOLCHAIN
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bool "Build LLVM toolchain for eBPF"
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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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@ -320,23 +319,24 @@ config GDB_PYTHON
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Enable the python bindings for GDB to allow using python in the gdb shell.
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config HAS_BPF_TOOLCHAIN
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default y if !BPF_TOOLCHAIN_NONE
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bool
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config NEED_BPF_TOOLCHAIN
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bool
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config HAS_PREBUILT_LLVM_TOOLCHAIN
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def_bool $(shell, [ -f llvm-bpf/.llvm-version ] && echo y || echo n)
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config USE_LLVM_HOST
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select HAS_BPF_TOOLCHAIN
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bool
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config USE_LLVM_PREBUILT
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select HAS_BPF_TOOLCHAIN
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default y if !DEVEL && !BUILDBOT && HAS_PREBUILT_LLVM_TOOLCHAIN
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bool
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config USE_LLVM_BUILD
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default y if !DEVEL && BUILDBOT
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select HAS_BPF_TOOLCHAIN
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default y if !DEVEL && NEED_BPF_TOOLCHAIN && (BUILDBOT || !HAS_PREBUILT_LLVM_TOOLCHAIN)
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bool
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config USE_GLIBC
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