1# 2# CMake Toolchain file for crosscompiling on ARM. 3# 4# This can be used when running cmake in the following way: 5# cd build/ 6# cmake .. -DCMAKE_TOOLCHAIN_FILE=../cross-arm-linux-gnueabihf.cmake 7# 8 9# Target operating system name. 10set(CMAKE_SYSTEM_NAME Linux) 11 12# assumed these are set up on the $PATH 13set(TC xtensa-esp32-elf) 14 15set(CMAKE_C_COMPILER "${TC}-gcc${EXECUTABLE_EXT}") 16set(CMAKE_AR "${TC}-ar${EXECUTABLE_EXT}") 17set(CMAKE_RANLIB "${TC}-ranlib${EXECUTABLE_EXT}") 18set(CMAKE_LINKER "${TC}-ld${EXECUTABLE_EXT}") 19 20# 21# Different build system distros set release optimization level to different 22# things according to their local policy, eg, Fedora is -O2 and Ubuntu is -O3 23# here. Actually the build system's local policy is completely unrelated to 24# our desire for cross-build release optimization policy for code built to run 25# on a completely different target than the build system itself. 26# 27# Since this goes last on the compiler commandline we have to override it to a 28# sane value for cross-build here. Notice some gcc versions enable broken 29# optimizations with -O3. 30# 31if (CMAKE_BUILD_TYPE MATCHES RELEASE OR CMAKE_BUILD_TYPE MATCHES Release OR CMAKE_BUILD_TYPE MATCHES release) 32 set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -O2") 33 set(CMAKE_CXX_FLAGS_RELEASE "${CMAKE_CXX_FLAGS_RELEASE} -O2") 34endif() 35 36SET(CMAKE_C_FLAGS "-nostdlib -Wall -Werror \ 37 -I${BUILD_DIR_BASE}/include \ 38 -I${IDF_PATH}/components/newlib/platform_include \ 39 -I${IDF_PATH}/components/mdns/include \ 40 -I${IDF_PATH}/components/heap/include \ 41 -I${IDF_PATH}/components/driver/include \ 42 -I${IDF_PATH}/components/spi_flash/include \ 43 -I${IDF_PATH}/components/nvs_flash/include \ 44 -I${IDF_PATH}/components/tcpip_adapter/include \ 45 -I${IDF_PATH}/components/lwip/include/lwip/posix \ 46 -I${IDF_PATH}/components/lwip/include/lwip \ 47 -I${IDF_PATH}/components/lwip/include/lwip/port \ 48 -I${IDF_PATH}/components/esp32/include/ \ 49 -I${IDF_PATH}/components/bootloader_support/include/ \ 50 -I${IDF_PATH}/components/app_update/include/ \ 51 -I$(IDF_PATH)/components/soc/esp32/include/ \ 52 -I$(IDF_PATH)/components/soc/include/ \ 53 -I$(IDF_PATH)/components/vfs/include/ \ 54 ${LWS_C_FLAGS} -Os \ 55 -I${IDF_PATH}/components/nvs_flash/test_nvs_host \ 56 -I${IDF_PATH}/components/freertos/include" CACHE STRING "" FORCE) 57 58# Where to look for the target environment. (More paths can be added here) 59set(CMAKE_FIND_ROOT_PATH "${CROSS_PATH}") 60 61# Adjust the default behavior of the FIND_XXX() commands: 62# search programs in the host environment only. 63set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) 64 65# Search headers and libraries in the target environment only. 66set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) 67set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) 68 69