esp-idf/components/ulp/cmake/toolchain-ulp.cmake
Angus Gratton a8fe083017 cmake: Set uninitialized variable warnings in ULP & bootloader subprojects
Fixes issue where PYTHON was not being expanded when running ulp_mapgen.py,
causing Windows launch setting to be used - reported here:
https://esp32.com/viewtopic.php?f=13&t=12640&p=50283#p50283

Closes https://github.com/espressif/esp-idf/issues/4785
2020-02-25 17:16:42 +11:00

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CMake

# CMake toolchain file for ULP
set(CMAKE_SYSTEM_NAME Generic)
# Compiler is only used for preprocessing
set(CMAKE_C_COMPILER "xtensa-esp32-elf-gcc")
set(CMAKE_ASM_COMPILER "esp32ulp-elf-as")
set(CMAKE_LINKER "esp32ulp-elf-ld")
if(NOT ASM_DIALECT)
set(ASM_DIALECT "")
endif()
set(CMAKE_ASM${ASM_DIALECT}_COMPILE_OBJECT "${CMAKE_ASM${ASM_DIALECT}_COMPILER} \
<DEFINES> <INCLUDES> -o <OBJECT> -c <SOURCE>")
set(CMAKE_EXE_LINKER_FLAGS "-A elf32-esp32ulp -nostdlib" CACHE STRING "ULP Linker Base Flags")
set(CMAKE_ASM_LINK_EXECUTABLE "${CMAKE_LINKER} <FLAGS> <CMAKE_ASM_LINK_FLAGS> \
<LINK_FLAGS> <OBJECTS> -o <TARGET> <LINK_LIBRARIES>")