[cmake] Add cmake file for hexagon-builtins baremetal (#151500)

This will be used to build hexagon-builtins for baremetal.

Signed-off-by: Kushal Pal <[email protected]>

Author: quic-k

compiler-rt/cmake/caches/hexagon-builtins-baremetal.cmake

@@ -0,0 +1,26 @@
+set(CMAKE_ASM_FLAGS "-G0 -mlong-calls -fno-pic" CACHE STRING "")
+set(LLVM_ENABLE_PER_TARGET_RUNTIME_DIR ON CACHE BOOL "")
+set(LLVM_TARGET_TRIPLE hexagon-unknown-none-elf CACHE STRING "")
+set(COMPILER_RT_DEFAULT_TARGET_TRIPLE hexagon-unknown-none-elf CACHE STRING "")
+set(COMPILER_RT_BUILD_BUILTINS ON CACHE BOOL "")
+set(COMPILER_RT_BUILD_SANITIZERS OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_XRAY OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_LIBFUZZER OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_PROFILE OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_MEMPROF OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_ORC OFF CACHE BOOL "")
+set(COMPILER_RT_BUILD_GWP_ASAN OFF CACHE BOOL "")
+set(COMPILER_RT_BUILTINS_ENABLE_PIC OFF CACHE BOOL "")
+set(COMPILER_RT_SUPPORTED_ARCH hexagon CACHE STRING "")
+# without this, build tries to use pthread which is not supported by hexagon-unknown-none-elf
+set(COMPILER_RT_BAREMETAL_BUILD ON CACHE BOOL "" FORCE)
+
+set(CMAKE_C_FLAGS "-ffreestanding" CACHE STRING "")
+set(CMAKE_CXX_FLAGS "-ffreestanding" CACHE STRING "")
+set(CMAKE_CROSSCOMPILING ON CACHE BOOL "")
+set(CAN_TARGET_hexagon 1 CACHE STRING "")
+set(CMAKE_C_COMPILER_FORCED ON CACHE BOOL "")
+set(CMAKE_CXX_COMPILER_FORCED ON CACHE BOOL "")
+
+set(CMAKE_C_COMPILER_TARGET hexagon-unknown-none-elf CACHE STRING "")
+set(CMAKE_CXX_COMPILER_TARGET hexagon-unknown-none-elf CACHE STRING "")