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一些语言特性不被Keil C51支持 #54

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slipperstree opened this issue Aug 2, 2021 · 5 comments

Contributor

slipperstree commented Aug 2, 2021

Keil的C编译器是基于C90的，所以有很多C99的特性不被支持导致无法编译。比如可变参数的宏定义 XXX(...) 等。
这导致51单片机全军覆没。有没有可能用一个开关来切换这些不被支持的语法，并最低限度的支持C51？

Owner

armink commented Aug 2, 2021

暂时没有这个计划呢，C51 编译器可以选择 C99 模式吗

Contributor Author

slipperstree commented Aug 2, 2021

不行，我试过了。但是据说第三方的SDCC支持，我没有试过，那个毕竟小众基本没什么人用。

ifreecoding commented Oct 23, 2023

Contributor Author

slipperstree commented Nov 19, 2023 •

edited

@ifreecoding
谢谢，但是你这个不是C51而是ArmM4的C编译器。Keil中C51的编译器是不支持C99 Mode的。

cuimingyang commented Apr 19, 2024

@slipperstree 请问找到解决办法了，我现在将keil arm上的程序移植到keil c51，也是遇到这个问题

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