将应用程序从MPLAB 8更新到X时的目标代码差异

大家好，我有一个使用MPLAB v8.91和C30 v3.30b编译器构建的遗留应用程序。该软件需要一些更改，但我想在MPLLABX中进行开发，但仍然使用C30编译器。在进行任何更改之前，我用两个IDE构建应用程序，希望生成的文件是相同的。但是，它们不是。所有的.o文件都是不同的，因此cof、hex和map也是不同的。我还没有发现如何查看程序集以查看它们之间的区别，但是对于一个文件，差异大约是.o文件的1%（根据hex diff工具）。我不明白为什么这些差异会悄然出现。你知道吗？谢谢，克雷格



      以下为原文

    Hi all,

I have a legacy application built with MPLAB v8.91 and C30 v3.30b compiler.
The software needs some changes but I'd like to do the development in MPLAB X but still with C30 compiler.

Before making any changes I built the application with both IDE expecting that the generated files are identical, however, they aren't. All the .o files are different and consequently so are the cof, hex and map.
I've not yet found out how to view the assembly to see what the differences are, but for one file the differences are about 1% of the .o file (according to hex diff tool).

Examining the command-line arguments to pic30-gcc I can't see any reason why these differences should creep in.
Do you you have any idea?

Thanks,
Craig