================
@@ -0,0 +1,39 @@
+# Build clang and compiler-rt targeting Baremetal RISC-V (cross-compiling)
+#
+# Use this as:
+#
+# $ cmake -GNinja -DCMAKE_BUILD_TYPE=Debug -DLLVM_ENABLE_PROJECTS=clang \
+# -DLLVM_ENABLE_RUNTIMES=compiler-rt \
+# -C../clang/cmake/caches/BaremetalRISCV.cmake ../llvm
+# $ ninja runtimes-riscv64-unknown-elf runtimes-riscv32-unknown-elf
+#
+set(TRIPLES riscv64-unknown-elf;riscv32-unknown-elf)
+set(LLVM_BUILTIN_TARGETS ${TRIPLES} CACHE STRING "")
+set(LLVM_RUNTIME_TARGETS ${TRIPLES} CACHE STRING "")
+set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR ON CACHE BOOL "")
+
+foreach(target ${TRIPLES})
+ # builtins config
+ set(BUILTINS_${target}_CMAKE_BUILD_TYPE Release CACHE STRING "")
+ set(BUILTINS_${target}_CMAKE_SYSTEM_NAME Generic CACHE STRING "")
+ set(BUILTINS_${target}_COMPILER_RT_BAREMETAL_BUILD ON CACHE BOOL "")
+ set(BUILTINS_${target}_COMPILER_RT_OS_DIR ${target} CACHE STRING "")
+ set(BUILTINS_${target}_LLVM_CONFIG_NO_EXPORTS ON CACHE BOOL "")
+
+ # enable compiler-rt in runtimes
+ set(RUNTIMES_${target}_ENABLE_RUNTIMES compiler-rt CACHE STRING "")
+
+ # runtimes config
+ set(RUNTIMES_${target}_CMAKE_BUILD_TYPE Release CACHE STRING "")
+ set(RUNTIMES_${target}_CMAKE_SYSTEM_NAME Generic CACHE STRING "")
+ set(RUNTIMES_${target}_COMPILER_RT_BAREMETAL_BUILD ON CACHE BOOL "")
+ set(RUNTIMES_${target}_COMPILER_RT_OS_DIR ${target} CACHE STRING "")
+ set(RUNTIMES_${target}_LLVM_CONFIG_NO_EXPORTS ON CACHE BOOL "")
+
+ # additional runtimes config for compiler-rt
+ set(RUNTIMES_${target}_COMPILER_RT_BUILD_LIBFUZZER OFF CACHE BOOL "")
+ set(RUNTIMES_${target}_COMPILER_RT_BUILD_PROFILE OFF CACHE BOOL "")
+ set(RUNTIMES_${target}_COMPILER_RT_BUILD_SANITIZERS OFF CACHE BOOL "")
+ set(RUNTIMES_${target}_COMPILER_RT_BUILD_XRAY OFF CACHE BOOL "")
----------------
petrhosek wrote:
What do you intend to build from compiler-rt?
https://github.com/llvm/llvm-project/pull/176353
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