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#
# CMake Toolchain file for crosscompiling on ARM.
#
# This can be used when running cmake in the following way:
# cd build/
# cmake .. -DCMAKE_TOOLCHAIN_FILE=../cross-arm-linux-gnueabihf.cmake
#
# Target operating system name.
set(CMAKE_SYSTEM_NAME Linux)
# assumed these are set up on the $PATH
set(TC xtensa-esp32-elf)
set(CMAKE_C_COMPILER "${TC}-gcc${EXECUTABLE_EXT}")
set(CMAKE_AR "${TC}-ar${EXECUTABLE_EXT}")
set(CMAKE_RANLIB "${TC}-ranlib${EXECUTABLE_EXT}")
set(CMAKE_LINKER "${TC}-ld${EXECUTABLE_EXT}")
#
# Different build system distros set release optimization level to different
# things according to their local policy, eg, Fedora is -O2 and Ubuntu is -O3
# here. Actually the build system's local policy is completely unrelated to
# our desire for cross-build release optimization policy for code built to run
# on a completely different target than the build system itself.
#
# Since this goes last on the compiler commandline we have to override it to a
# sane value for cross-build here. Notice some gcc versions enable broken
# optimizations with -O3.
#
if (CMAKE_BUILD_TYPE MATCHES RELEASE OR CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES release)
set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2")
set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2")
endif()
SET(CMAKE_C_FLAGS "-nostdlib -Wall -Werror \
-I${BUILD_DIR_BASE}/include \
-I${IDF_PATH}/components/newlib/platform_include \
-I${IDF_PATH}/components/mdns/include \
-I${IDF_PATH}/components/heap/include \
-I${IDF_PATH}/components/driver/include \
-I${IDF_PATH}/components/spi_flash/include \
-I${IDF_PATH}/components/nvs_flash/include \
-I${IDF_PATH}/components/tcpip_adapter/include \
-I${IDF_PATH}/components/lwip/include/lwip/posix \
-I${IDF_PATH}/components/lwip/include/lwip \
-I${IDF_PATH}/components/lwip/include/lwip/port \
-I${IDF_PATH}/components/esp32/include/ \
-I${IDF_PATH}/components/bootloader_support/include/ \
-I${IDF_PATH}/components/app_update/include/ \
-I$(IDF_PATH)/components/soc/esp32/include/ \
-I$(IDF_PATH)/components/soc/include/ \
-I$(IDF_PATH)/components/vfs/include/ \
${LWS_C_FLAGS} -Os \
-I${IDF_PATH}/components/nvs_flash/test_nvs_host \
-I${IDF_PATH}/components/freertos/include" CACHE STRING "" FORCE)
# Where to look for the target environment. (More paths can be added here)
set(CMAKE_FIND_ROOT_PATH "${CROSS_PATH}")
# Adjust the default behavior of the FIND_XXX() commands:
# search programs in the host environment only.
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# Search headers and libraries in the target environment only.
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
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