cc1d287133
esp2020r1 toolchain includes a nano.specs file, which instructs GCC to substitute libc.a with libc_nano.a. In the build system, this simplifies handling of the nano formatting option, eliminating LIBC and LIBM global variables.
42 lines
1.3 KiB
CMake
42 lines
1.3 KiB
CMake
set(srcs
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"abort.c"
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"heap.c"
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"locks.c"
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"poll.c"
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"pthread.c"
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"random.c"
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"reent_init.c"
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"syscall_table.c"
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"syscalls.c"
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"termios.c"
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"time.c")
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set(include_dirs platform_include)
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if(CONFIG_SPIRAM_CACHE_WORKAROUND)
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set(ldfragments esp32-spiram-rom-functions-c.lf)
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endif()
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list(APPEND ldfragments newlib.lf)
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idf_component_register(SRCS "${srcs}"
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INCLUDE_DIRS "${include_dirs}"
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PRIV_REQUIRES soc esp_timer
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LDFRAGMENTS "${ldfragments}")
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# Toolchain libraries require code defined in this component
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idf_component_get_property(newlib newlib COMPONENT_LIB)
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target_link_libraries(${COMPONENT_LIB} INTERFACE c m gcc "$<TARGET_FILE:${newlib}>")
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set_source_files_properties(heap.c PROPERTIES COMPILE_FLAGS -fno-builtin)
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# Forces the linker to include locks, heap, and syscalls from this component,
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# instead of the implementations provided by newlib.
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set(EXTRA_LINK_FLAGS "-u newlib_include_locks_impl")
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list(APPEND EXTRA_LINK_FLAGS "-u newlib_include_heap_impl")
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list(APPEND EXTRA_LINK_FLAGS "-u newlib_include_syscalls_impl")
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list(APPEND EXTRA_LINK_FLAGS "-u newlib_include_pthread_impl")
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target_link_libraries(${COMPONENT_LIB} INTERFACE "${EXTRA_LINK_FLAGS}")
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if(CONFIG_NEWLIB_NANO_FORMAT)
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target_link_libraries(${COMPONENT_LIB} INTERFACE "--specs=nano.specs")
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endif()
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