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Re: Using logical oprators in GNU makefile
From: |
Ralf Wildenhues |
Subject: |
Re: Using logical oprators in GNU makefile |
Date: |
Wed, 29 Apr 2009 23:14:41 +0200 |
User-agent: |
Mutt/1.5.18 (2008-05-17) |
Hello,
please don't top-post, thank you.
* Koteswar16 wrote on Wed, Apr 29, 2009 at 06:37:21AM CEST:
>
> But how to do ORing in make file ?
> i.e.
> ifeq ($(var1), value1) || ($(var2), value2)
You can either repeat the expansion,
ifeq ($(var1), value1)
$(foo)
endif
ifeq ($(var2), value2)
$(foo)
endif
or factor into a new variable, for clarity and to avoid duplicate
expansion,
cond =
ifeq ($(var1), value1)
cond = yes
endif
ifeq ($(var2), value2)
cond = yes
endif
ifdef cond
...
endif
or you can rewrite your makefile to use conditional operators, and then
use $(or ...). See 'info make "Conditional Syntax"' and 'info make
"Conditional Functions"'.
Cheers,
Ralf