wolfssl/IDE/Espressif/ESP-IDF/examples/template/CMakeLists.txt

# wolfSSL Espressif Example Project CMakeLists.txt
#   v1.3
#
# The following lines of boilerplate have to be in your project's
# CMakeLists in this exact order for cmake to work correctly
cmake_minimum_required(VERSION 3.16)

# Optional no watchdog typically used for test & benchmark
add_compile_options(-DWOLFSSL_ESP_NO_WATCHDOG=1)

# The wolfSSL CMake file should be able to find the source code.
# Otherwise, assign an environment variable or set it here:
#
# set(WOLFSSL_ROOT "~/workspace/wolfssl-other-source")
#
# Optional WOLFSSL_CMAKE_SYSTEM_NAME detection to find
# USE_MY_PRIVATE_CONFIG path for my_private_config.h
#
# Expected path varies:
#
#     WSL:  /mnt/c/workspace
#   Linux:  ~/workspace
# Windows:  C:\workspace
#
if(WIN32)
    # Windows-specific configuration here
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_WINDOWS")
    message("Detected Windows")
endif()
if(CMAKE_HOST_UNIX)
    message("Detected UNIX")
endif()
if(APPLE)
    message("Detected APPLE")
endif()
if(CMAKE_HOST_UNIX AND (NOT APPLE) AND EXISTS "/proc/sys/fs/binfmt_misc/WSLInterop")
    # Windows-specific configuration here
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_WSL")
    message("Detected WSL")
endif()
if(CMAKE_HOST_UNIX AND (NOT APPLE) AND (NOT WIN32))
    # Windows-specific configuration here
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_LINUX")
    message("Detected Linux")
endif()
if(APPLE)
    # Windows-specific configuration here
    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DWOLFSSL_CMAKE_SYSTEM_NAME_APPLE")
    message("Detected Apple")
endif()
# End optional WOLFSSL_CMAKE_SYSTEM_NAME

# Check that there are not conflicting wolfSSL components
# The ESP Registry Component will be in ./managed_components/wolfssl__wolfssl
# The local component wolfSSL directory will be in ./components/wolfssl
if( EXISTS "${CMAKE_HOME_DIRECTORY}/managed_components/wolfssl__wolfssl" AND EXISTS "${CMAKE_HOME_DIRECTORY}/components/wolfssl" )
    # These exclude statements don't seem to be honored by the $ENV{IDF_PATH}/tools/cmake/project.cmake'
    # add_subdirectory("${CMAKE_HOME_DIRECTORY}/managed_components/wolfssl__wolfssl" EXCLUDE_FROM_ALL)
    # add_subdirectory("${CMAKE_HOME_DIRECTORY}/managed_components/wolfssl__wolfssl/include" EXCLUDE_FROM_ALL)
    # So we'll error out and let the user decide how to proceed:
    message(WARNING "\nFound wolfSSL components in\n"
                    "./managed_components/wolfssl__wolfssl\n"
                    "and\n"
                    "./components/wolfssl\n"
                    "in project directory: \n"
                    "${CMAKE_HOME_DIRECTORY}")
    message(FATAL_ERROR "\nPlease use either the ESP Registry Managed Component or the wolfSSL component directory but not both.\n"
                        "If removing the ./managed_components/wolfssl__wolfssl directory, remember to also remove "
                        "or rename the idf_component.yml file typically found in ./main/")
else()
    message(STATUS "No conflicting wolfSSL components found.")
endif()

# Ensure the this wolfSSL component directory is included
set(WOLFSSL_PATH "${CMAKE_HOME_DIRECTORY}/components/wolfssl")
list(APPEND EXTRA_COMPONENT_DIRS ${WOLFSSL_PATH})

# Not only is a project-level "set(COMPONENTS" not needed here, this will cause
# an unintuitive error about  Unknown CMake command "esptool_py_flash_project_args".
include($ENV{IDF_PATH}/tools/cmake/project.cmake)

project(wolfssl_template)