fc076f5a1d
As both C and C++ standards require applications running under an OS to return 'int', adapt that for Zephyr to align with those standard. This also eliminates errors when building with clang when not using -ffreestanding, and reduces the need for compiler flags to silence warnings for both clang and gcc Signed-off-by: Keith Packard <keithp@keithp.com>
31 lines
951 B
C
31 lines
951 B
C
/*
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* Copyright (c) 2010-2014 Wind River Systems, Inc.
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* Copyright (c) 2021 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/* Linkers may treat weak functions differently if they are located within
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* the same object that calls the symbol or not.
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*
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* For example, when using armlink, then if the weak symbol is inside the object
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* referring to it the weak symbol will be used. This will result in the symbol
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* being multiply defined because both the weak and strong symbols are used.
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*
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* To GNU ld, it doesn't matter if the weak symbol is placed in the same object
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* which uses the weak symbol. GNU ld will always link to the strong version.
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*
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* Having the weak main symbol in an independent file ensures that it will be
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* correctly treated by multiple linkers.
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*/
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#include <kernel_internal.h>
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int __weak main(void)
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{
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/* NOP default main() if the application does not provide one. */
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arch_nop();
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return 0;
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}
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