first version of working cmake

CMakeLists.txt

@@ -52,7 +52,7 @@ if(NOT DEFINED BOARD)
 endif()
 
 if(NOT DEFINED ISA)
-    set(ISA imc CACHE STRING "Target ISA")
+    set(ISA rv32imc CACHE STRING "Target ISA")
 endif()
 
 if(NOT DEFINED RISCV_ABI)
@@ -69,7 +69,7 @@ if(NOT BOARD IN_LIST SUPPORTED_BOARDS)
 endif()
 
 if(NOT ISA IN_LIST SUPPORTED_ISAS)
-    message(FATAL_ERROR "Invalid ISA specified. Supported ISAs: ${SUPPORTED_ISAS}")
+    message(FATAL_ERROR "Invalid ISA specified(${ISA}). Supported ISAs: ${SUPPORTED_ISAS}")
 endif()
 
 if(NOT RISCV_ABI IN_LIST SUPPORTED_ABIS)
@@ -91,8 +91,10 @@ set(BSP_BASE "${CMAKE_CURRENT_SOURCE_DIR}/bare-metal-bsp")
 add_compile_definitions(BOARD_${BOARD})
 
 # RISC-V specific compiler flags
-#set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -march=${RISCV_ARCH}_zicsr_zifencei -mabi=${RISCV_ABI}")
-#set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=${RISCV_ARCH}_zicsr_zifencei -mabi=${RISCV_ABI}")
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O2 -g -march=${RISCV_ARCH}_zicsr_zifencei -mabi=${RISCV_ABI} -mcmodel=medany")
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O2 -g -march=${RISCV_ARCH}_zicsr_zifencei -mabi=${RISCV_ABI} -mcmodel=medany")
+#set(CMAKE_ASM_COMPILER riscv64-unknown-elf-as)
+set(CMAKE_ASM_FLAGS "${CMAKE_ASM_FLAGS} -O2 -g -march=${RISCV_ARCH}_zicsr_zifencei -mabi=${RISCV_ABI} -mcmodel=medany")
 
 # Optional: Enable semihosting support
 option(SEMIHOSTING "Enable semihosting support" OFF)
@@ -101,18 +103,18 @@ if(SEMIHOSTING)
 endif()
 
 #create interface library for propagating compile options
-add_library(global_compile_options INTERFACE)
+#add_library(global_compile_options INTERFACE)
 
 # Compile options
-target_compile_options(global_compile_options INTERFACE
-    -march=${RISCV_ARCH}_zicsr_zifencei
-    -mabi=${RISCV_ABI}
-    -mcmodel=medany
-    -O2
-    -g
+#target_compile_options(global_compile_options INTERFACE
+#    -march=${RISCV_ARCH}_zicsr_zifencei
+ #   -mabi=${RISCV_ABI}
+ #   -mcmodel=medany
+ #   -O2
+ #   -g
   #  -ffunction-sections
   #  -fdata-sections
-)
+#)