initial commit

third_party/tinyusb/examples/build_system/cmake/cpu/rv32imac-ilp32.cmake

@@ -0,0 +1,18 @@
+if (TOOLCHAIN STREQUAL "gcc")
+  set(TOOLCHAIN_COMMON_FLAGS
+    -march=rv32imac_zicsr_zifencei
+    -mabi=ilp32
+    )
+  set(FREERTOS_PORT GCC_RISC_V CACHE INTERNAL "")
+
+elseif (TOOLCHAIN STREQUAL "clang")
+  set(TOOLCHAIN_COMMON_FLAGS
+    -march=rv32imac_zicsr_zifencei
+    -mabi=ilp32
+    )
+  set(FREERTOS_PORT GCC_RISC_V CACHE INTERNAL "")
+
+elseif (TOOLCHAIN STREQUAL "iar")
+  message(FATAL_ERROR "IAR not supported")
+  set(FREERTOS_PORT IAR_RISC_V CACHE INTERNAL "")
+endif ()