cmake_minimum_required(VERSION 3.13.4)

#-------------------------------------------------------------------------------
# Project configuration
#-------------------------------------------------------------------------------

project(iree-riscv32)

set_property(GLOBAL PROPERTY USE_FOLDERS ON)

list(APPEND CMAKE_MODULE_PATH
  ${CMAKE_CURRENT_LIST_DIR}/cmake/
)

set(IREE_SOURCE_DIR "$ENV{ROOTDIR}/toolchain/iree" CACHE PATH
    "IREE source code path. (default: $ENV{ROOTDIR}/toolchain/iree)")

include_directories(BEFORE SYSTEM ${CMAKE_CURRENT_LIST_DIR})
include_directories(BEFORE SYSTEM ${CMAKE_CURRENT_BINARY_DIR})

#-------------------------------------------------------------------------------
# Springbok-specific settings
#-------------------------------------------------------------------------------
set(TCM_LENGTH "16M" CACHE STRING "TCM Length (default: 16M)")
add_link_options("LINKER:--defsym=__tcm_length__=${TCM_LENGTH}")
set(STACK_SIZE "10K" CACHE STRING "Stack size (default: 10K)")
add_link_options("LINKER:--defsym=__stack_size__=${STACK_SIZE}")
set(SPRINGBOK_LINKER_SCRIPT "$ENV{ROOTDIR}/sw/vec/springbok/springbok.ld" CACHE PATH "Springbok linker script path (default: springbok.ld)")
set(BUILD_WITH_SPRINGBOK ON CACHE BOOL "Build the target with springbok BSP (default: ON)")
set(BUILD_ISP_WITH_RVV ON CACHE BOOL "Build the ISP pipeline with RVV (default: ON)")
set(BUILD_MFCC_WITH_RVV OFF CACHE BOOL "Build audio preprocessing with RVV (default: OFF)")

#-------------------------------------------------------------------------------
# IREE-specific settings
#-------------------------------------------------------------------------------
set(IREE_BUILD_COMPILER OFF)
set(IREE_ENABLE_MLIR OFF)
set(IREE_BUILD_SAMPLES OFF)
set(IREE_ENABLE_THREADING OFF)
set(IREE_BUILD_TESTS OFF)
set(IREE_BUILD_BINDINGS_TFLITE OFF)
set(IREE_HAL_DRIVER_LOCAL_SYNC ON CACHE BOOL "" FORCE)
set(IREE_HAL_EXECUTABLE_LOADER_DEFAULTS OFF CACHE BOOL "" FORCE)
set(IREE_HAL_DRIVER_DEFAULTS OFF CACHE BOOL "" FORCE)

#-------------------------------------------------------------------------------
# IREE-specific definitions
#-------------------------------------------------------------------------------
set(SPRINGBOK_CONFIG_HEADER "${CMAKE_CURRENT_SOURCE_DIR}/springbok_config.h")
add_definitions(-DFLATCC_USE_GENERIC_ALIGNED_ALLOC)
add_definitions(-DIREE_SYNCHRONIZATION_DISABLE_UNSAFE=1)
add_definitions(-DIREE_FILE_IO_ENABLE=0)
add_definitions(-DIREE_USER_CONFIG_H="${SPRINGBOK_CONFIG_HEADER}")

# The project does a cmake hack here -- at the executable linkage stage, we
# append the logging library (and springbok BSP). Any logging library update
# (libspringbok.a or libnative_log.a) only gets rebuilt during executable
# linkage, but not during library compilation.
#
# However, an explicit include path gets added here across all targets so the
# header files can be found during compilation.
if(${BUILD_WITH_SPRINGBOK})
  # Springbok BSP-related setting
  add_subdirectory($ENV{ROOTDIR}/sw/vec/springbok springbok)
  include(riscv_springbok)
  include_directories($ENV{ROOTDIR}/sw/vec/springbok/include)
else()
  # Add the springbok printout support.
  add_subdirectory(native_log)
  include(riscv_native_log)
  include_directories(native_log)
endif()

message(STATUS "Include IREE source at ${IREE_SOURCE_DIR}")
# Build IREE runtime libraries.
add_subdirectory(${IREE_SOURCE_DIR} iree)

# Apply IREE's CMake variables and build options so we can use IREE build
# functions properly in this project.
set(IREE_ROOT_DIR "${IREE_SOURCE_DIR}" CACHE PATH "IREE Root directory")
include(springbok_ops)

include(springbok_bytecode_module)
include(springbok_c_module)
include(springbok_modules)
include(iree_model_input)
include(springbok_test)

# softmax op (and mfcc) requires floorf implementation in libm. Use the nano
# version.
find_library(m m
PATHS
  "${RISCV_TOOLCHAIN_ROOT}/riscv32-unknown-elf/lib/newlib-nano/"
REQUIRED)
link_libraries(m)

# Add the included directory here.
add_subdirectory(samples)

# Add pigweed support
include($ENV{ROOTDIR}/sw/pigweed/pw_build/pigweed.cmake)
pw_set_backend(pw_log pw_log_basic)
pw_set_backend(pw_assert pw_assert_log)
pw_set_backend(pw_sys_io pw_sys_io_stdio)
add_subdirectory($ENV{ROOTDIR}/sw/pigweed pw)