日期:2014-05-16  浏览次数:20955 次

xilinx 的mb-gcc编译器中printf问题
想使用printf函数,但是用xilinx公司自己的mb-gcc(针对microblaze)编译含有printf的函数时报一下错误:
write.c:36: undefined reference to 'outbyte'"/"read.c:35: undefined reference to 'inbyte'"
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有个帖子说:
This error occurs when the C-code contains "printf-" statements and a peripheral has not been defined as "std_out" and "std_in". To work around this problem, use one of the following solutions: 
Remove the "printf-" statement. 

or 

Define peripheral as Standard-out and Standard-in. 
This can be done by using the Software Platform Settings dialog box.
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我理解的就是说(第二种方法)把标准输入输出设置为外设,但是不清楚该怎么做,有高手了解相关东西么?



------解决方案--------------------
This can be done by using the Software Platform Settings dialog box
------解决方案--------------------
就是menuconfig选项里设置,或者查找平台下的kconfig