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Re: Help : how to use $(or condition ) & $(and condition ) in makefiles
From: |
Sam Ravnborg |
Subject: |
Re: Help : how to use $(or condition ) & $(and condition ) in makefiles |
Date: |
Thu, 5 Jun 2008 19:58:21 +0200 |
User-agent: |
Mutt/1.4.2.1i |
On Thu, Jun 05, 2008 at 05:36:56AM -0700, rakesh aggarwal wrote:
> Hi,
>
> I read the GNU make manual and found there are $(or condition ) and $(and
> condition ) functions. ( at
> http://www.gnu.org/software/make/manual/make.html#Conditional-Functions )
> But i didnt get in which format i have to put conditions in these functions.
Notice that this is condition and not expressions.
Sample:
havefile := $(if $(wildcard myfile.c), YES, NO)
$(warning HAVEFILE=$(HAVEFILE))
This will print
HAVEFILE=NO
if no myfile.c exist (because the $(wildcard myfile.c) expands to an empty
string
Sam