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# Copyright 2022 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
cmake_minimum_required(VERSION 3.20.0)
# Create the library
if(BOARD STREQUAL unit_testing)
find_package(Zephyr COMPONENTS unittest REQUIRED HINTS $ENV{ZEPHYR_BASE})
add_library(spi_flash_reg)
else()
zephyr_library_named(spi_flash_reg)
target_link_libraries(spi_flash_reg PRIVATE cros_ec_interface)
# When LTO is enabled, enable only for the "app" library, which compiles
# and links all Chromium OS sources.
# TODO: Enable LTO for all sources when Zephyr supports it.
# See https://github.com/zephyrproject-rtos/zephyr/issues/2112
if (DEFINED CONFIG_LTO)
# The Zephyr toolchain generates linker errors if both CONFIG_LTO and
# CONFIG_FPU are used. See b/184302085.
if(("${ZEPHYR_TOOLCHAIN_VARIANT}" STREQUAL "zephyr") AND
(DEFINED CONFIG_FPU))
message(STATUS "Zephyr toolchain and CONFIG_FPU detected: disabling LTO")
else()
set_property(
TARGET
spi_flash_reg
PROPERTY
INTERPROCEDURAL_OPTIMIZATION True
)
endif()
endif()
endif()
# Add the sources
target_sources(spi_flash_reg
PRIVATE
src/spi_flash_reg.c
PUBLIC
public/spi_flash_reg.h
)
# Include the public directory
target_include_directories(spi_flash_reg PUBLIC public)
if(BOARD STREQUAL unit_testing)
project(flash_reg)
# Set the sources for the test
target_sources(testbinary PRIVATE src/spi_flash_reg_test.c)
# Link the library being tested
target_link_libraries(testbinary PRIVATE spi_flash_reg)
# Add the private directory used to mock components of the EC
target_include_directories(testbinary PRIVATE private)
target_include_directories(spi_flash_reg PRIVATE private)
# Zephyr's unittest also generates a test_interface which we need in the
# library (not just in the test binary)
target_link_libraries(spi_flash_reg PRIVATE test_interface)
string(TOLOWER "${CMAKE_C_COMPILER_ID}" lowercase_compiler_id)
if("${lowercase_compiler_id}" STREQUAL "clang")
target_link_options(testbinary PRIVATE -fprofile-instr-generate)
endif()
# W25Q64 has 0x400000 bytes as the first section, setting
# CONFIG_FLASH_SIZE_BYTES to that allows us to test every branch of
# spi_flash_reg.c
add_compile_definitions(spi_flash_reg
PUBLIC
CONFIG_SPI_FLASH_W25Q64
CONFIG_FLASH_SIZE_BYTES=4194304
)
endif()
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