Add cmake files for riscv32

Signed-off-by: Akif Ejaz <akif.ejaz@10xengineers.ai>

Author: akifejaz

cmake/riscv32-unknown-elf.cmake

@@ -0,0 +1,29 @@
+# Toolchain settings
+set(CMAKE_C_COMPILER    riscv32-unknown-elf-gcc)
+set(CMAKE_CXX_COMPILER  riscv32-unknown-elf-g++)
+set(AS                  riscv32-unknown-elf-as)
+set(AR                  riscv32-unknown-elf-ar)
+set(OBJCOPY             riscv32-unknown-elf-objcopy)
+set(OBJDUMP             riscv32-unknown-elf-objdump)
+set(SIZE                riscv32-unknown-elf-size)
+
+set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)
+
+# this makes the test compiles use static library option so that we don't need to pre-set linker flags and scripts
+set(CMAKE_TRY_COMPILE_TARGET_TYPE STATIC_LIBRARY)
+
+set(CMAKE_C_FLAGS   "${CFLAGS}" CACHE INTERNAL "c compiler flags")
+set(CMAKE_CXX_FLAGS "${CXXFLAGS}" CACHE INTERNAL "cxx compiler flags")
+set(CMAKE_ASM_FLAGS "${ASFLAGS} -D__ASSEMBLER__ -D__riscv_float_abi_single" CACHE INTERNAL "asm compiler flags")
+set(CMAKE_EXE_LINKER_FLAGS "${LDFLAGS}" CACHE INTERNAL "exe link flags")
+
+SET(CMAKE_C_FLAGS_DEBUG "-Og -g -ggdb3" CACHE INTERNAL "c debug compiler flags")
+SET(CMAKE_CXX_FLAGS_DEBUG "-Og -g -ggdb3" CACHE INTERNAL "cxx debug compiler flags")
+SET(CMAKE_ASM_FLAGS_DEBUG "-g -ggdb3" CACHE INTERNAL "asm debug compiler flags")
+
+SET(CMAKE_C_FLAGS_RELEASE "-O3" CACHE INTERNAL "c release compiler flags")
+SET(CMAKE_CXX_FLAGS_RELEASE "-O3" CACHE INTERNAL "cxx release compiler flags")
+SET(CMAKE_ASM_FLAGS_RELEASE "" CACHE INTERNAL "asm release compiler flags")

cmake/riscv32_gnu.cmake

@@ -0,0 +1,12 @@
+# Name of the target
+set(CMAKE_SYSTEM_NAME Generic)
+set(CMAKE_SYSTEM_PROCESSOR risc-v32)
+
+set(THREADX_ARCH "risc-v32")
+set(THREADX_TOOLCHAIN "gnu")
+set(ARCH_FLAGS "-g -march=rv32gc -mabi=ilp32d -mcmodel=medany")
+set(CFLAGS "${ARCH_FLAGS}")
+set(ASFLAGS "${ARCH_FLAGS}")
+set(LDFLAGS "${ARCH_FLAGS}")
+
+include(${CMAKE_CURRENT_LIST_DIR}/riscv32-unknown-elf.cmake)