使用带有多个选项的ifeq

Question

我想使用ifeq检查makefile中的条件，＆amp;不知道怎么办：

ifeq ( cond1 = yes || cond2 = yes )   
  set value x = 1;   
else  
  set value x = 2;  
endif 

请建议正确的方法吗？

Answer 1

除了上面给出的正确答案：如果你想检查x = 4还是x = 6

ifeq ($(x),$(filter $(x),4 6))   
   x is either 4 or 6. do whatever you like with it
else  
   x is neither 4 nor 6  
endif

Answer 2

ifeq ($(filter $(cond1) $(cond2),yes),)
    x := 2
else  
    x := 1
endif