Re: My makefile problem

[David Boyce]

At 02:30 PM 12/22/2006, Gautreaux, Richard wrote:
> content-class: urn:content-classes:message
> Content-Type: multipart/alternative;
>         boundary="----_=_NextPart_001_01C725FF.A150542D"
>
> I am having a problem with a makefile and cannot solve it on my own 
> after looking through the documentation for GNU make.
> What I am trying to do is compare the argument passed in to the make 
> util.  So I am trying to set something if the arg is 
> vxWorks.bin.  So here is a portion of my makefile.
>
> I am calling make vxWorks.bin and the following code does not compare to TRUE.
>
> ifeq (<mailto:$@,vxWorks.bin>$@,vxWorks.bin)
> LDFLAGS += -T$(BSP_PATH)/ldscript.ld
> endif
> I cannot get this to evaluate to TRUE even though if I echo the 
> statement $@ and vxWorks.bin they both print
> vxWorks.bin
> vxWorks.bin
>
> Any help would be greatly appriciated.

First, $@ is defined only within a build script (aka command). GNU 
make conditionals are defined only outside of a build script. Thus 
you cannot use them together.

Second, the normal solution to your problem would be via 
target-specific variable settings. See section 6.10 of the online 
manual. Something like

vxWorks.bin: LDFLAGS += ...

-David Boyce