build: add support for using prebuilt LLVM toolchain

[openwrt/staging/dedeckeh.git] / toolchain / Config.in

diff --git a/toolchain/Config.in b/toolchain/Config.in
index a7da2a1f732535d3c1ac56545728ad725860d012..366f5c8b486c462372ae3f1f187a363c249c531e 100644 (file)
--- a/toolchain/Config.in
+++ b/toolchain/Config.in
@@ -41,11 +41,17 @@ menuconfig TARGET_OPTIONS
        choice BPF_TOOLCHAIN
                prompt "BPF toolchain" if DEVEL
                default BPF_TOOLCHAIN_BUILD_LLVM if BUILDBOT
+               default BPF_TOOLCHAIN_PREBUILT if HAS_PREBUILT_LLVM_TOOLCHAIN
                default BPF_TOOLCHAIN_NONE
 
                config BPF_TOOLCHAIN_NONE
                        bool "None"
 
+               config BPF_TOOLCHAIN_PREBUILT
+                       bool "Use prebuilt LLVM toolchain"
+                       depends on HAS_PREBUILT_LLVM_TOOLCHAIN
+                       select USE_LLVM_PREBUILT
+
                config BPF_TOOLCHAIN_HOST
                        select USE_LLVM_HOST
                        bool "Use host LLVM toolchain"
@@ -298,10 +304,18 @@ config GDB_PYTHON
 config HAS_BPF_TOOLCHAIN
        bool
 
+config HAS_PREBUILT_LLVM_TOOLCHAIN
+       def_bool $(shell, [ -f llvm-bpf/.llvm-version ] && echo y || echo n)
+
 config USE_LLVM_HOST
        select HAS_BPF_TOOLCHAIN
        bool
 
+config USE_LLVM_PREBUILT
+       select HAS_BPF_TOOLCHAIN
+       default y if !DEVEL && !BUILDBOT && HAS_PREBUILT_LLVM_TOOLCHAIN
+       bool
+
 config USE_LLVM_BUILD
        default y if !DEVEL && BUILDBOT
        select HAS_BPF_TOOLCHAIN