conditional ifdef for multiple projects ?

[bobjee]

Hello All,

Can some one please help me with this issue.
I have 3 different projects A1, A2, A3 and i am using ifdefs. Can someone tell me a way to avoid such scenario

ifdef A1
<code1>
elsif A2
<code2>
elseif A3
<code3>
endif

code1 and code2 are same, i dont want to use ifndef . So can someone suggest me a mechanism which looks like (the reason i dont want to use ifndef is if a new project comes up I have to change my logic again, i cant use shared code logic)

ifdef (A1 or A2)
<code>
elseif A3
<code3>
endif

Please help me with this issue.
Thank you

 

[Shehata]

ifdef A2
define A4
elseif A3
define A4
ifdef A1
<code1>
elsif A4
<code2,3>
endif

 

[bobjee]

Thank you for the reply, but I want to get this done without adding new defines like A4.. Thank you