ifeq ($(sim_tool), 1) DEFINES += +define+XCESIM else DEFINES += +define+VCS endif解释一下
时间: 2023-08-07 14:01:57 浏览: 83
这段代码是一个条件语句,根据`sim_tool`的值来定义不同的宏。如果`sim_tool`的值为1,则定义`XCESIM`宏,否则定义`VCS`宏。具体代码如下:
```
ifeq ($(sim_tool), 1)
DEFINES += +define+XCESIM
else
DEFINES += +define+VCS
endif
```
在这段代码中,`ifeq`是一个条件语句,用于判断`sim_tool`的值是否等于1。如果条件成立,则执行`ifeq`和`endif`之间的代码块,即将`XCESIM`宏添加到`DEFINES`中。如果条件不成立,则执行`else`和`endif`之间的代码块,即将`VCS`宏添加到`DEFINES`中。
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